Diamond Offshore Drilling (DODRW) 10-Q 2009 Q3 Quarterly report

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2009

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                    to                    

Commission file number 1-13926

DIAMOND OFFSHORE DRILLING, INC.

(Exact name of registrant as specified in its charter)

Delaware	76-0321760
(State or other jurisdiction of incorporation	(I.R.S. Employer
or organization)	Identification No.)

15415 Katy Freeway
Houston, Texas
77094
(Address of principal executive offices)
(Zip Code)
(281) 492-5300
(Registrant’s telephone number, including area code)

     Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

     Yesþ Noo

     Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

     Yesþ Noo

     Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filerþ	Accelerated filero	Non-accelerated filero	Smaller reporting companyo
	(Do not check if a smaller reporting company)

     Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

     Yeso Noþ

     Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

     As of October 23, 2009 Common stock, $0.01 par value per share 139,010,857 shares

DIAMOND OFFSHORE DRILLING, INC.

TABLE OF CONTENTS FOR FORM 10-Q

QUARTER ENDED SEPTEMBER 30, 2009

	PAGE NO.
COVER PAGE		1
TABLE OF CONTENTS		2
PART I. FINANCIAL INFORMATION		3
ITEM 1. Financial Statements (Unaudited)
Consolidated Balance Sheets		3
Consolidated Statements of Operations		4
Consolidated Statements of Cash Flows		5
Notes to Consolidated Financial Statements		6
ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		22
ITEM 3. Quantitative and Qualitative Disclosures About Market Risk		45
ITEM 4. Controls and Procedures		47
PART II. OTHER INFORMATION		47
ITEM 6. Exhibits		47
SIGNATURES		48
EXHIBIT INDEX		49
EX-31.1
EX-31.2
EX-32.1
EX-101 INSTANCE DOCUMENT
EX-101 SCHEMA DOCUMENT
EX-101 CALCULATION LINKBASE DOCUMENT
EX-101 LABELS LINKBASE DOCUMENT
EX-101 PRESENTATION LINKBASE DOCUMENT
EX-101 DEFINITION LINKBASE DOCUMENT

PART I. FINANCIAL INFORMATION

ITEM 1. Financial Statements.

DIAMOND OFFSHORE DRILLING, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS
(Unaudited)
(In thousands, except per share data)

	September 30,			December 31,
	2009			2008
ASSETS
Current assets:
Cash and cash equivalents	$	250,821		$	336,052
Marketable securities		880			400,592
Accounts receivable, net of provision for bad debts		764,639			574,842
Prepaid expenses and other current assets		170,246			123,046
Assets held for sale		32,201			32,201
Total current assets		1,218,787			1,466,733
Drilling and other property and equipment, net of accumulated depreciation		4,402,130			3,414,373
Other assets		94,541			73,325
Total assets	$	5,715,458		$	4,954,431
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	58,004		$	93,982
Accrued liabilities		298,238			329,526
Taxes payable		47,746			85,579
Current portion of long-term debt		4,143			—
Total current liabilities		408,131			509,087
Long-term debt		998,603			503,280
Deferred tax liability		521,767			462,026
Other liabilities		154,175			118,553
Total liabilities		2,082,676			1,592,946
Commitments and contingencies (Note 10)		—			—
Stockholders’ equity:
Common stock (par value $0.01, 500,000,000 shares authorized, 143,926,385 shares issued and 139,009,585 shares outstanding at September 30, 2009 and 143,917,850 shares issued and 139,001,050 shares outstanding at December 31, 2008)		1,439			1,439
Additional paid-in capital		1,962,285			1,957,041
Retained earnings		1,779,697			1,516,908
Accumulated other comprehensive gain		3,774			510
Treasury stock, at cost (4,916,800 shares at September 30, 2009 and December 31, 2008)		(114,413	)		(114,413	)
Total stockholders’ equity		3,632,782			3,361,485
Total liabilities and stockholders’ equity	$	5,715,458		$	4,954,431

The accompanying notes are an integral part of the consolidated financial statements.

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DIAMOND OFFSHORE DRILLING, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS
(Unaudited)
(In thousands, except per share data)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2009			2008			2009			2008
Revenues:
Contract drilling	$	885,281		$	881,953		$	2,664,447		$	2,588,919
Revenues related to reimbursable expenses		23,094			18,423			76,055			51,931
Total revenues		908,375			900,376			2,740,502			2,640,850
Operating expenses:
Contract drilling		304,146			314,273			906,746			872,716
Reimbursable expenses		22,873			18,126			75,019			50,660
Depreciation		86,485			72,155			256,978			212,150
General and administrative		15,628			13,944			48,109			45,434
Gain on disposition of assets		(217	)		(228	)		(365	)		(505	)
Casualty loss		—			6,281			—			6,281
Total operating expenses		428,915			424,551			1,286,487			1,186,736
Operating income		479,460			475,825			1,454,015			1,454,114
Other income (expense):
Interest income		1,879			3,055			3,645			10,369
Interest expense		(14,031	)		(2,989	)		(26,436	)		(6,226	)
Foreign currency transaction gain (loss)		8,313			(29,047	)		17,921			(14,606	)
Other, net		(336	)		581			315			333
Income before income tax expense		475,285			447,425			1,449,460			1,443,984
Income tax expense		(111,151	)		(136,892	)		(349,305	)		(426,780	)
Net income	$	364,134		$	310,533		$	1,100,155		$	1,017,204
Income per share:
Basic	$	2.62		$	2.23		$	7.91		$	7.32
Diluted	$	2.62		$	2.23		$	7.91		$	7.31
Weighted-average shares outstanding:
Shares of common stock		139,005			139,001			139,003			138,945
Dilutive potential shares of common stock		98			90			80			131
Total weighted-average shares outstanding		139,103			139,091			139,083			139,076

The accompanying notes are an integral part of the consolidated financial statements.

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DIAMOND OFFSHORE DRILLING, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)
(In thousands)

	Nine Months Ended
	September 30,
	2009			2008
Operating activities:
Net income	$	1,100,155		$	1,017,204
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		256,978			212,150
(Gain) on disposition of assets		(365	)		(505	)
Casualty loss		—			6,281
(Gain) on sale of marketable securities, net		(619	)		(674	)
(Gain) loss on foreign currency forward exchange contracts		(11,852	)		7,920
Deferred tax provision		57,984			33,862
Accretion of discounts on marketable securities		(631	)		(1,631	)
Amortization/write-off of debt issuance costs		466			416
Amortization of debt discounts		211			181
Stock-based compensation expense		4,824			4,570
Excess tax benefits from stock-based payment arrangements		—			(1,392	)
Deferred income, net		70,340			11,119
Deferred expenses, net		(21,195	)		(21,842	)
Other items, net		10,757			6,944
Proceeds from settlement of foreign currency forward exchange contracts designated as accounting hedges		3,046			—
Changes in operating assets and liabilities:
Accounts receivable		(198,131	)		(184,300	)
Prepaid expenses and other current assets		(15,524	)		(17,085	)
Accounts payable and accrued liabilities		(54,881	)		(33,833	)
Taxes payable		(65,131	)		(60	)
Net cash provided by operating activities		1,136,432			1,039,325
Investing activities:
Capital expenditures		(309,737	)		(487,662	)
Rig acquisitions		(950,024	)		—
Proceeds from disposition of assets, net of disposal costs		1,391			2,802
Deposits received on sale of rig		6,000			—
Proceeds from sale and maturities of marketable securities		4,098,868			1,293,742
Purchases of marketable securities		(3,698,627	)		(1,291,271	)
(Cost of) proceeds from settlement of foreign currency forward exchange contracts not designated as accounting hedges		(28,772	)		11,141
Net cash used in investing activities		(880,901	)		(471,248	)
Financing activities:
Issuance of 5.875% senior unsecured notes		499,255			—
Debt issuance costs and arrangement fees		(3,923	)		—
Payment of dividends		(836,621	)		(573,917	)
Proceeds from stock plan exercises		527			2,002
Excess tax benefits from stock-based payment arrangements		—			1,392
Redemption of 1.5% debentures		—			(73	)
Net cash used in financing activities		(340,762	)		(570,596	)
Net change in cash and cash equivalents		(85,231	)		(2,519	)
Cash and cash equivalents, beginning of period		336,052			637,961
Cash and cash equivalents, end of period	$	250,821		$	635,442

The accompanying notes are an integral part of the consolidated financial statements.

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DIAMOND OFFSHORE DRILLING, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. General Information

     The unaudited consolidated financial statements of Diamond Offshore Drilling, Inc. and subsidiaries, which we refer to as “Diamond Offshore,” “we,” “us” or “our,” should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2008 (File No. 1-13926).

     As of October 23, 2009, Loews Corporation, or Loews, owned 50.4% of the outstanding shares of our common stock.

Interim Financial Information

     The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the U.S., or GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission, or SEC. Accordingly, pursuant to such rules and regulations, they do not include all disclosures required by GAAP for complete financial statements. The consolidated financial information has not been audited but, in the opinion of management, includes all adjustments (consisting only of normal recurring accruals) necessary for a fair presentation of the consolidated balance sheets, statements of operations and statements of cash flows at the dates and for the periods indicated. Results of operations for interim periods are not necessarily indicative of results of operations for the respective full years.

     Our management has evaluated subsequent events through the time of our filing with the SEC on October 27, 2009, the date on which we issued our financial statements.

Accounting Standards Codification

      In June 2009, the Financial Accounting Standards Board, or FASB, issued Statement of Financial Accounting Standards No. 168, “The FASB Accounting Standards Codification and the Hierarchy of Generally Accepted Accounting Principles,” or SFAS 168. SFAS 168 established the “FASB Accounting Standards Codification,” or FASB ASC, as the source of authoritative GAAP recognized by the FASB for non-governmental entities. All existing accounting standards have been superseded and accounting literature not included in the FASB ASC is considered non-authoritative. Subsequent issuances of new standards will be in the form of Accounting Standards Updates, or ASU, that will be included in the ASC. Generally, the FASB ASC is not expected to change GAAP. Pursuant to the adoption of SFAS 168 we have adjusted references to authoritative accounting literature in our financial statements. Adoption of FAS 168 had no effect our financial position, operating results or cash flows.

Adoption of ASC 470-20

     We adopted FASB ASC Topic 470-20, Debt with Conversion and Other Options, or ASC 470-20 (previously FASB Staff Position, or FSP, Accounting Principles Board No. 14-1, “Accounting for Convertible Debt Instruments That May Be Settled in Cash Upon Conversion (including Partial Cash Settlement)”), on January 1, 2009. ASC 470-20 applies to convertible debt securities that may be settled by the issuer fully or partially in cash and requires that the statement be retrospectively applied to all past periods presented. For convertible debt securities falling within the scope of ASC 470-20, issuers must separate the securities into two components: debt and equity. The proceeds of the issuance are first allocated to the debt based on the estimated fair value of a similar debt issue without a conversion option; the remaining proceeds are allocated to equity.

     Both our Zero Coupon Convertible Debentures due 2020, or Zero Coupon Debentures, and our 1.5% Convertible Senior Debentures Due 2031, or 1.5% Debentures, are within the scope of ASC 470-20. Consequently, we retrospectively applied the requirements of the pronouncement to both of these issuances. The effect of adoption on our Consolidated Balance Sheets is as follows:

	Zero Coupon Debentures						1.5% Debentures						Total
	September 30,			December 31,			September 30,			December 31,			September 30,			December 31,
	2009			2008			2009			2008			2009			2008
	(In thousands)
Increase (Decrease):
Drilling and other property and equipment, net	$	6,169		$	6,429		$	8,949		$	9,240		$	15,118		$	15,669
Deferred tax liability		1,033			1,080			1,693			1,741			2,726			2,821
Additional paid-in capital		48,997			48,997			62,701			62,701			111,698			111,698
Retained earnings		(43,861	)		(43,648	)		(55,445	)		(55,202	)		(99,306	)		(98,850	)

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The effect of the adoption of ASC 470-20 on our Consolidated Statements of Operations is as follows:

	Zero Coupon Debentures												1.5% Debentures												Total
	September 30												September 30												September 30
	Three Months						Nine Months						Three Months						Nine Months						Three Months						Nine Months
	2009			2008			2009			2008			2009			2008			2009			2008			2009			2008			2009			2008
	(In thousands)
Increase (Decrease):
Depreciation expense	$	87		$	68		$	260		$	208		$	97		$	73		$	291		$	217		$	184		$	141		$	551		$	425
Tax expense		(16	)		(12	)		(47	)		(36	)		(16	)		(12	)		(48	)		(35	)		(32	)		(24	)		(95	)		(71	)
Income from continuing operations		(71	)		(56	)		(213	)		(172	)		(81	)		(61	)		(243	)		(182	)		(152	)		(117	)		(456	)		(354	)
Net income		(71	)		(56	)		(213	)		(172	)		(81	)		(61	)		(243	)		(182	)		(152	)		(117	)		(456	)		(354	)

     Debt discounts related to our Zero Coupon Debentures and 1.5% Debentures were fully amortized in 2005 and 2007, respectively. Consequently, the adoption of ASC 470-20 had no effect on the carrying amount of our Zero Coupon Debentures at September 30, 2009 and December 31, 2008. Our then outstanding 1.5% Debentures were redeemed in full in April 2008.

     The carrying amounts of the liability and equity components of the debentures at September 30, 2009 and December 31, 2008 is as follows:

	Zero Coupon Debentures				1.5% Debentures				Total
	September 30,		December 31,		September 30,		December 31,		September 30,		December 31,
	2009		2008		2009		2008		2009		2008
	(In thousands)
Carrying amount of liability component of debt issue	$	4,143	$	4,036	$	—	$	—	$	4,143	$	4,036
Carrying amount of equity component of debt issue	$	48,997	$	48,997	$	62,701	$	62,701	$	111,698	$	111,698

     Interest expense (net of capitalized interest) for our Zero Coupon Debentures related to the contractual coupon rate was $37,000 and $14,000 for the three months ended September 30, 2009 and 2008, respectively, with an effective interest rate of 3.63% in each period. Interest expense (net of capitalized interest) for our Zero Coupon Debentures related to the contractual coupon rate was $108,000 and $26,000 for the nine months ended September 30, 2009 and 2008, respectively, with an effective interest rate of 3.63% in each period. Interest expense (net of capitalized interest) for the 1.5% Debentures related to the contractual coupon interest rate was $24,000 for the nine months ended September 30, 2008. The effective interest rate for the 1.5% Debentures was 1.6% for the nine months ended September 30, 2008. There was no interest expense (net of capitalized interest) for the three months ended September 30, 2008 as the 1.5% Debentures were redeemed in April 2008. See Note 9.

     The adoption of ASC 470-20 had no effect on previously stated basic and diluted earnings per share for the three months ended September 30, 2008. The adoption of ASC 470-20 resulted in a $0.01 per share decline in basic and diluted earning per share for the nine months ended September 30, 2008, from $7.32 per share to $7.31 per share. As required, our consolidated financial statements and notes thereto have been adjusted to reflect the effect of adoption of ASC 470-20 on January 1, 2009.

Other Reclassifications

     Certain amounts applicable to the prior periods have been reclassified to conform to the classifications currently followed. Such reclassifications do not affect earnings.

Cash and Cash Equivalents, Marketable Securities

     We consider short-term, highly liquid investments that have an original maturity of three months or less and deposits in money market mutual funds that are readily convertible into cash to be cash equivalents. See Note 5.

     We classify our investments in marketable securities as available for sale and they are stated at fair value in our Consolidated Balance Sheets. Accordingly, any unrealized gains and losses, net of taxes, are reported in our Consolidated Balance Sheets in “Accumulated other comprehensive gains (losses)” until realized. The cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity and such adjustments are included in our Consolidated Statements of Operations in “Interest income.” The sale and purchase of securities are

7

recorded on the date of the trade. The cost of debt securities sold is based on the specific identification method. Realized gains or losses, as well as any declines in value that are judged to be other than temporary, are reported in our Consolidated Statements of Operations in “Other, net.”

Fair Value of Financial Instruments

     We believe that the carrying amount of our current financial instruments approximates fair value because of the short maturity of these instruments. For non-current financial instruments we use quoted market prices, when available, and discounted cash flows to estimate fair value.

     We have adopted FASB ASC Topic 825-10-65, Financial Instruments — Transition Related to FSP No. FAS 107-1 and APB 28-1, “Interim Disclosures about Fair Value of Financial Instruments” (previously FSP No. FAS 107-1 and APB 28-1, “Interim Disclosures about Fair Value of Financial Instruments,”) which requires disclosures about fair value of financial instruments for interim reporting periods as well as in annual financial statements. See Note 5.

Supplementary Cash Flow Information

     We paid interest on long-term debt totaling $25.1 million in each of the nine-month periods ended September 30, 2009 and 2008.

     We made estimated U.S. federal income tax payments of $192.0 million and $330.0 million during the nine months ended September 30, 2009 and 2008, respectively. We paid $141.4 million and $86.0 million in foreign income taxes, net of foreign tax refunds, during the nine months ended September 30, 2009 and 2008, respectively. We paid state income taxes of $0.2 million during the nine months ended September 30, 2009.

     Capital expenditures for the nine months ended September 30, 2009 included $59.4 million that was accrued but unpaid at December 31, 2008. Capital expenditures for the nine months ended September 30, 2008 included $43.0 million that was accrued but unpaid at December 31, 2007. Capital expenditures that were accrued but not paid as of September 30, 2009 totaled $45.4 million. We have included this amount in “Accrued liabilities” in our Consolidated Balance Sheets at September 30, 2009.

     We recorded income tax benefits of $32,000 and $1.7 million related to employee stock plan exercises during the nine months ended September 30, 2009 and 2008, respectively.

Capitalized Interest

     We capitalize interest cost for the construction and upgrade of qualifying assets. There were no qualifying expenditures during the nine months ended September 30, 2009. During the nine months ended September 30, 2008, we capitalized interest on qualifying expenditures related to the upgrade of theOcean Monarchfor ultra-deepwater service (completed December 2008) and the construction of our two jack-up rigs, theOcean Shield(completed May 2008) and theOcean Scepter(completed August 2008).

     A reconciliation of our total interest cost to “Interest expense” as reported in our Consolidated Statements of Operations is as follows:

	Three
	Months			Nine Months
	Ended			Ended
	September 30, 2008
	(In thousands)
Total interest cost including amortization of debt issuance costs	$	6,942		$	20,993
Capitalized interest		(3,953	)		(14,767	)
Total interest expense as reported	$	2,989		$	6,226

Assets Held For Sale

     At December 31, 2008, we had transferred the $32.2 million net book value of theOcean Tower to “Assets held for sale” in our Consolidated Balance Sheets. In December 2008, we entered into an agreement to sell the rig, which was damaged during a hurricane in September 2008, at a price in excess of its $32.2 million carrying value. In connection with the execution of the sales agreement, and amendments thereto, we received $9.5 million in aggregate deposits ($3.5 million in 2008 and $6.0 million in 2009) from the purchaser, which we have recorded in

8

“Accrued liabilities” in our Consolidated Balance Sheets. We completed the sale on October 26, 2009.

Impairment of Long-Lived Assets

     We evaluate our property and equipment for impairment whenever changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We utilize a probability-weighted cash flow analysis in testing an asset for potential impairment. Our assumptions and estimates underlying this analysis include the following:

• dayrate by rig;

• utilization rate by rig (expressed as the actual percentage of time per year that the rig would be used);

• the per day operating cost for each rig if active, ready-stacked or cold-stacked; and

• salvage value for each rig.

Based on these assumptions and estimates, we develop a matrix by assigning probabilities to various combinations of assumed utilization rates and dayrates.

     As of June 30, 2009, we evaluated theOcean Towerand our three mat-supported jack-up rigs (Ocean Champion,Ocean CrusaderandOcean Drake), which had been cold-stacked during the second quarter of 2009, for impairment. TheOcean Towerhad a pending sales agreement for a price in excess of its carrying value (see “ —Assets Held For Sale”) and is not considered to be impaired. (The sale of theOcean Tower was completed on October 26, 2009.) We evaluated our three cold-stacked rigs for impairment using the probability-weighted cash flow analysis discussed above. Based on these analyses, we determined that the probability-weighted cash flows exceeded the carrying value of each rig.

     Management’s assumptions are an inherent part of our asset impairment evaluation and the use of different assumptions could produce results that differ from those reported.

Comprehensive Income

     A reconciliation of net income to comprehensive income is as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2009			2008			2009			2008
	(In thousands)
Net income	$	364,134		$	310,533		$	1,100,155		$	1,017,204
Other comprehensive gains (losses), net of tax:
Foreign currency forward exchange contracts:
Unrealized holding gain		1,361			—			5,192			—
Reclassification adjustment for gain included in net income		(1,459	)		—			(1,459	)		—
Investments in marketable securities:
Unrealized holding gain (loss)		(2	)		(4	)		34			14
Reclassification adjustment for gain included in net income		4			(12	)		(503	)		(12	)
Comprehensive income	$	364,038		$	310,517		$	1,103,419		$	1,017,206

     The tax related to the change in unrealized holding gain on forward exchange contracts for the three and nine months ended September 30, 2009 was $0.7 million and $2.8 million, respectively. The tax related to the reclassification adjustment for foreign currency forward exchange contracts included in net income for both the three and nine months ended September 30, 2009 was $0.8 million.

     The tax related to the change in unrealized holding losses on investments for the three months ended September 30, 2009 was approximately $1,000 and the tax related to the change in unrealized holding gains on investments for the nine months ended September 30, 2009 was approximately $18,000. The tax effect on the reclassification adjustment for net gains on investments included in net income for the three months ended September 30, 2009 was approximately $2,000 and the tax effect on the reclassification adjustment for net losses on investments included in net income for the nine months ended September 30, 2009 was approximately $271,000.

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     The tax related to the change in unrealized holding loss on investments was approximately $2,000 for the three months ended September 30, 2008 and the tax related to the change in unrealized holding gain on investments was approximately $8,000 for the nine months ended September 30, 2008. The tax effect on the reclassification adjustment for net losses on investments included in net income was approximately $6,000 for the three and nine months ended September 30, 2008.

Foreign Currency

     Our functional currency is the U.S. dollar. Foreign currency transaction gains and losses, including gains and losses on our foreign currency forward exchange contracts not designated as accounting hedges, are reported as “Foreign currency transaction gain (loss)” in our Consolidated Statements of Operations. For the three and nine months ended September 30, 2009, we recognized net foreign currency exchange gains of $8.3 million and $17.9 million, respectively. For the three and nine months ended September 30, 2008, we recognized net foreign currency exchange losses of $29.0 million and $14.6 million, respectively. See Note 4.

Revenue Recognition

     Revenue from our dayrate drilling contracts is recognized as services are performed. In connection with such drilling contracts, we may receive fees (either lump-sum or dayrate) for the mobilization of equipment. These fees are earned as services are performed over the initial term of the related drilling contracts. We defer mobilization fees received, as well as direct and incremental mobilization costs incurred, and amortize each, on a straight line basis, over the term of the related drilling contracts (which is the period estimated to be benefited from the mobilization activity). Straight line amortization of mobilization revenues and related costs over the initial term of the related drilling contracts (which generally range from two to 60 months) is consistent with the timing of net cash flows generated from the actual drilling services performed. Absent a contract, mobilization costs are recognized as incurred.

     From time to time, we may receive fees from our customers for capital improvements to our rigs. We defer such fees received in “Accrued liabilities” and “Other liabilities” in our Consolidated Balance Sheets and recognize these fees into income on a straight-line basis over the period of the related drilling contract. We capitalize the costs of such capital improvements and depreciate them over the estimated useful life of the asset.

     We record reimbursements received for the purchase of supplies, equipment, personnel services and other services provided at the request of our customers in accordance with a contract or agreement, for the gross amount billed to the customer, as “Revenues related to reimbursable expenses” in our Consolidated Statements of Operations.

Use of Estimates in the Preparation of Financial Statements

     The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. Actual results could differ from those estimated.

Recent Accounting Pronouncements

     In October 2009, the FASB issued Accounting Standards Update No. 2009-13, Revenue Recognition (Topic 605), Multiple Deliverable Revenue Arrangements, a consensus of the FASB Emerging Issues Task Force, or ASU 2009-13. ASU 2009-13 addresses the accounting for multiple deliverable arrangements to enable vendors to account for products or services (deliverables) separately rather than as a combined unit. ASU 2009-13 changes the guidance provided in the ASC Subtopic 605-25, Revenue Recognition -Multiple-Element Arrangements, or ASC-

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605-25, to allow the financial reporting of revenue arrangements to reflect the underlying economics of transactions. The amendments to ASC-605-25 will be effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. We are currently evaluating the impact that the adoption of the amendments to ASC-605-25 will have on our results of operations and financial position, as well as the related disclosure requirements.

2. Earnings Per Share

     A reconciliation of the numerators and the denominators of our basic and diluted per-share computations follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2009		2008		2009		2008
	(In thousands, except per share data)
Net income — basic (numerator):	$	364,134	$	310,533	$	1,100,155	$	1,017,204
Effect of dilutive potential shares
1.5% Debentures		—		—		—		15
Zero Coupon Debentures		24		9		70		17
Net income including conversions — diluted (numerator)	$	364,158	$	310,542	$	1,100,225	$	1,017,236
Weighted average shares — basic (denominator):		139,005		139,001		139,003		138,945
Effect of dilutive potential shares
1.5% Debentures		—		—		—		25
Zero Coupon Debentures		52		52		52		52
Stock options and SARs		46		38		28		54
Weighted average shares including conversions — diluted (denominator)		139,103		139,091		139,083		139,076
Earnings per share:
Basic	$	2.62	$	2.23	$	7.91	$	7.32
Diluted	$	2.62	$	2.23	$	7.91	$	7.31

     Our computation of diluted earnings per share, or EPS, for the three months ended September 30, 2009 excludes stock options representing 2,000 shares of common stock and 360,823 stock appreciation rights, or SARs. Our computation of EPS for the nine months ended September 30, 2009 excludes stock options representing 11,086 shares of common stock and 430,575 SARs. The inclusion of such potentially dilutive shares in the computation of diluted EPS would have been antidilutive for the periods presented.

     Our computation of diluted EPS for the three and nine months ended September 30, 2008 excludes 247,042 and 182,037 SARs, respectively. The inclusion of such potentially dilutive shares in the computation of diluted EPS would have been antidilutive for the periods presented.

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3. Marketable Securities

     We report our investments as current assets in our Consolidated Balance Sheets in “Marketable securities,” representing the investment of cash available for current operations. See Note 5.

     Our investments in marketable securities are classified as available for sale and are summarized as follows:

	September 30, 2009
	Amortized		Unrealized		Market
	Cost		Gain		Value
			(In thousands)
Mortgage-backed securities	$	816	$	64	$	880

	December 31, 2008
	Amortized		Unrealized		Market
	Cost		Gain		Value
	(In thousands)
Due within one year	$	398,791	$	758	$	399,549
Mortgage-backed securities		1,016		27		1,043
Total	$	399,807	$	785	$	400,592

     Proceeds from sales and maturities of marketable securities and gross realized gains and losses are summarized as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2009			2008			2009			2008
	(In thousands)
Proceeds from sales	$	100,039		$	643,720		$	2,548,868		$	743,742
Proceeds from maturities		800,000			—			1,550,000			550,000
Gross realized gains		22			680			790			680
Gross realized losses		(2	)		(3	)		(171	)		(6	)

4. Derivative Financial Instruments

Foreign Currency Forward Exchange Contracts

     Our international operations expose us to foreign exchange risk associated with our costs payable in foreign currencies for employee compensation, foreign income tax payments and purchases from foreign suppliers. We may utilize foreign currency forward exchange contracts to reduce our forward exchange risk. Our foreign currency forward exchange contracts may obligate us to exchange predetermined amounts of foreign currencies on specified dates or to net settle the spread between the contracted foreign currency exchange rate and the spot rate on the contract settlement date, which, for certain of our contracts, is the average spot rate for the contract period.

     We enter into foreign currency forward exchange contracts when we believe market conditions are favorable to purchase contracts for future settlement with the expectation that such contracts, when settled, will reduce our exposure to foreign currency gains/losses on foreign currency expenditures in the future. The amount and duration of such contracts is based on our monthly forecast of expenditures in the significant currencies in which we do business and for which there is a financial market (i.e., Australian dollars, Brazilian reais, British pounds sterling, Mexican pesos and Norwegian kroner). These forward contracts are derivatives as defined by ASC Topic 815, Derivatives and Hedging, or ASC 815 (previously Statement of Financial Accounting Standards, or SFAS, No. 133, “Accounting for Derivatives and Hedging Activities”).

     ASC 815 requires that each derivative be stated in the balance sheet at its fair value with gains and losses reflected in the income statement except that, to the extent the derivative qualifies for hedge accounting, the gains and losses are reflected in income in the same period as offsetting losses and gains on the qualifying hedged positions. For derivative contracts entered into prior to May 2009, we did not seek hedge accounting treatment under ASC 815. Accordingly, prior to May 2009, all adjustments to record the carrying value of our derivative

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financial instruments at fair value were reported as “Foreign currency transaction gain (loss)” in our Consolidated Statements of Operations.

     Realized gains or losses upon settlement of the derivative contracts not designated as cash flow hedges are reported as “Foreign currency transaction gain (loss)” in our Consolidated Statements of Operations.

     Beginning in May 2009, we began a hedging strategy and designated certain of our qualifying foreign currency forward exchange contracts as cash flow hedges pursuant to ASC 815. These hedges are expected to be highly effective, and therefore, adjustments to record the carrying value of the effective portion of our derivative financial instruments to their fair value is recorded as a component of “Accumulated other comprehensive income,” or AOCI, in our Consolidated Financial Statements. The effective portion of the cash flow hedge will remain in AOCI until it is reclassified into earnings in the period or periods during which the hedged transaction affects earnings or it is determined that the hedged transaction will not occur. Adjustments to record the carrying value of the ineffective portion of our derivative financial instruments to fair value are recorded as “Foreign currency transaction gain (loss)” in our Consolidated Statements of Operations.

     Realized gains or losses upon settlement of derivative contracts designated as cash flow hedges are reported as a component of “Contract drilling expense” in our Consolidated Statements of Operations to offset the impact of foreign currency fluctuations in our expenditures in local foreign currencies in the countries in which we operate.

     During the nine months ended September 30, 2009, we settled foreign currency exchange contracts with an aggregate notional value of approximately $279.3 million, of which an aggregate notional value of $61.1 million was designated as an accounting hedge.

     As of September 30, 2009, we had foreign currency exchange contracts outstanding in the aggregate notional amount of $87.5 million, consisting of $27.6 million in Australian dollars, $18.0 million in Brazilian reais, $22.3 million in British pounds sterling, $7.6 million in Mexican pesos and $12.0 million in Norwegian kroner. These contracts generally settle monthly through March 2010. As of September 30, 2009, all outstanding derivative contracts had been designated as cash flow hedges, except for derivative contracts with a notional amount aggregating $2.4 million in Norwegian kroner. See Note 5.

     The following table presents the fair values of our derivative financial instruments at September 30, 2009:

	Assets			Liabilities
	Balance Sheet			Balance Sheet
	Location	Fair Value		Location	Fair Value
		(In			(In
		thousands)			thousands)
Derivatives designated as hedging instruments under ASC 815:
Foreign currency forward exchange contracts	Prepaid expenses and other current assets	$	5,972	Accrued liabilities	$	(229	)
Derivatives not designated as hedging instruments under ASC 815:
Foreign currency forward exchange contracts	Prepaid expenses and other current assets		277			—
		$	6,249		$	(229	)

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     The following table presents the amounts recognized in our Consolidated Balance Sheets and Consolidated Statements of Operations related to our foreign currency forward exchange contracts designated as cash flow hedges under ASC 815 for each of the three and nine month periods ended September 30, 2009.

					Location of Gain
					Recognized in Income	Amount of (Loss)
Amount of Gain					on Derivative	Recognized in Income on
Recognized in		Location of Gain	Amount of Gain		(Ineffective Portion	Derivative (Ineffective
AOCI on		Reclassified from	Reclassified from		and Amount Excluded	Portion and Amount
Derivative		AOCI into Income	AOCI into Income		from Effectiveness	Excluded from
(Effective Portion)		(Effective Portion)	(Effective Portion)		Testing)	Effectiveness Testing)
(In thousands)			(In thousands)			(In thousands)
$	7,987	Contract drilling expense	$	2,244	Foreign currency transaction gain	$	(269	)

     The following table presents the amounts recognized in our Consolidated Statements of Operations related to our foreign currency forward exchange contracts not designated as hedging instruments under ASC 815 for the three and nine month periods ended September 30, 2009 and 2008.

	Amount of Gain Recognized in Income
	Three Months Ended					Nine Months Ended
	September 30,					September 30,
Location of Gain (Loss) Recognized in Income	2009		2008			2009		2008
	(In thousands)
Foreign currency transaction gain	$	238	$	(25,070	)	$	8,806	$	(7,920	)

     The amounts presented in the table above include unrealized gains of approximately $147,000 and $37.6 million for the three months and nine months ended September 30, 2009, respectively, to record the carrying value of our derivative financial instruments to their fair value. The amounts presented in the table above include unrealized losses of $28.7 million and $19.1 million for the three months and nine months ended September 30, 2008, respectively, to record the carrying value of our derivative financial instruments to their fair value.

     As of September 30, 2009, the estimated amount of net unrealized gains associated with our foreign currency forward exchange contracts that will be reclassified to earnings during the next twelve months was $5.7 million. The net unrealized gains associated with these derivative financial instruments will be reclassified to contract drilling expense.

5. Financial Instruments and Fair Value Disclosures

Concentrations of Credit and Market Risk

     Financial instruments which potentially subject us to significant concentrations of credit or market risk consist primarily of periodic temporary investments of excess cash, trade accounts receivable and investments in debt securities, including mortgage-backed securities. We place our excess cash investments in high quality short-term money market instruments through several financial institutions. At times, such investments may be in excess of the insurable limit. We periodically evaluate the relative credit standing of these financial institutions as part of our investment strategy.

     Concentrations of credit risk with respect to our trade accounts receivable are limited primarily due to the entities comprising our customer base. Since the market for our services is the offshore oil and gas industry, this customer base consists primarily of major and independent oil and gas companies and government-owned oil companies. In general, before working for a customer with whom we have not had a prior business relationship and/or whose financial stability may appear uncertain to us, we perform a credit review on that company. Based on that analysis, we may require that the customer present a letter of credit, prepay or provide other credit enhancements.

     During the second quarter of 2009, one of our customers sought short-term financial relief with respect to an existing contractual agreement with us for a six-well, one-year minimum contract term, program that began in May 2009. As a result, we agreed to amend our existing contract with this customer, and in consideration of this amendment, we are to receive a $20,000 per day increase in the total contractual operating dayrate, to a total of $560,000 per day, for a minimum of the first 240 days of the initial one-year contract. Under the terms of the

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amended agreement, the customer is obligated to pay us $75,000 per day in accordance with our normal credit terms (due 30 days after receipt of invoice). The remainder of the dayrate for the six well program (minimum of 240 days) will be paid through the conveyance of a 27% net profit interest, or NPI, in a minimum of five developmental oil-and-gas producing properties covering six wells owned by the customer. Based on the current production payout estimate, we anticipate that the first payment from the conveyance of the NPI will commence in early 2010. Payments of such amounts, and the timing of such payments, are contingent upon such production and upon energy sale prices. At September 30, 2009, the $55.5 million portion of this trade receivable that is expected to be paid from the NP, is presented as “Accounts Receivable” in our Consolidated Balance Sheets.

     In December 2008, we recorded a $31.9 million provision for bad debts to reserve the uncollected balance of one of our customers in the United Kingdom, or U.K., that has entered into administration (a U.K. insolvency proceeding similar to U.S. Chapter 11 bankruptcy). We also provide allowances for potential credit losses when necessary.

     No additional allowances were deemed necessary for the periods presented. Prior to December 2008, we have not experienced significant losses on our trade receivables.

     Nearly all of our investments in debt securities are U.S. government securities with minimal credit risk. However, we are exposed to market risk due to price volatility associated with interest rate fluctuations.

Fair Values

     The amounts reported in our Consolidated Balance Sheets for cash and cash equivalents, marketable securities, accounts receivable, forward exchange contracts and accounts payable approximate fair value. Fair values and related carrying values of our debt instruments are shown below:

	September 30, 2009				December 31, 2008
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In millions)
Zero Coupon Debentures	$	4.9	$	4.1	$	3.0	$	4.0
4.875% Senior Notes		259.5		249.7		230.0		249.6
5.15% Senior Notes		267.2		249.7		237.0		249.6
5.875% Senior Notes		523.4		499.3		—		—

     We have estimated the fair value amounts by using appropriate valuation methodologies and information available to management as of September 30, 2009 and December 31, 2008, respectively. Considerable judgment is required in developing these estimates, and accordingly, no assurance can be given that the estimated values are indicative of the amounts that would be realized in a free market exchange. The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it was practicable to estimate that value:

• Cash and cash equivalents— The carrying amounts approximate fair value because of the short maturity of these instruments.

• Marketable securities— The fair values of the debt securities, including mortgage-backed securities, available for sale were based on the quoted closing market prices on September 30, 2009 and December 31, 2008, respectively.

• Accounts receivable and accounts payable— The carrying amounts approximate fair value based on the nature of the instruments.

• Forward exchange contracts —The fair value of our foreign currency forward exchange contracts is based on both quoted market prices and valuations derived from pricing models on September 30, 2009 and December 31, 2008, respectively.

• Long-term debt— The fair value of our Zero Coupon Debentures is based on the closing market price of our common stock on September 30, 2009 and December 31, 2008, respectively, and the stated conversion rate for the debentures. The fair values of our 4.875% Senior Notes due 2015 and 5.15% Senior Notes due 2014 are based on the quoted closing market prices on September 30, 2009 and December 31, 2008, respectively, from brokers of these instruments. The fair value of our 5.875% Senior Notes due 2019 is based on the quoted market price on September 30, 2009 from brokers of this instrument.

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     Effective January 1, 2008, we adopted SFAS No. 157, “Fair Value Measurements,” or SFAS 157, which requires additional disclosures about our assets and liabilities that are measured at fair value. SFAS 157 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. SFAS 157 also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:

Level 1	Quoted prices for identical instruments in active markets. Level 1 assets include short-term investments such as money market funds and U.S. Treasury Bills. Our Level 1 assets at September 30, 2009 consisted of $234.4 million in cash held in money market funds.
Level 2	Quoted market prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 assets and liabilities include mortgage-backed securities and over-the-counter foreign currency forward exchange contracts that are valued using a model-derived valuation technique.
Level 3	Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Level 3 assets and liabilities generally include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation or for which there is a lack of transparency as to the inputs used.

Assets and liabilities measured at fair value on a recurring basis are summarized below:

	September 30, 2009
	Fair Value Measurements Using
	Level 1		Level 2			Level 3		Fair Value
	(In thousands)
Assets:
Short-term investments	$	234,378	$	—		$	—	$	234,378
Residential mortgage-backed securities		—		880			—		880
Forward exchange contracts		—		6,249			—		6,249
Total assets	$	234,378	$	7,129		$	—	$	241,507
Liabilities:
Forward exchange contracts	$	—	$	(229	)	$	—	$	(229	)

	December 31, 2008
	Fair Value Measurements Using
	Level 1		Level 2			Level 3		Fair value
	(In thousands)
Assets:
Short-term investments	$	700,038	$	—		$	—	$	700,038
Residential mortgage-backed securities		—		1,043			—		1,043
Total assets	$	700,038	$	1,043		$	—	$	701,081
Liabilities:
Forward exchange contracts	$	—	$	(37,301	)	$	—	$	(37,301	)

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6. Prepaid Expenses and Other Current Assets

     Prepaid expenses and other current assets consist of the following:

	September 30,		December 31,
	2009		2008
	(In thousands)
Rig spare parts and supplies	$	50,285	$	52,481
Deferred mobilization costs		31,632		28,924
Prepaid insurance		17,938		11,845
Deferred tax assets		9,350		9,350
Foreign currency forward exchange contracts		6,249		—
Deposits		4,369		3,846
Prepaid taxes		36,281		11,589
Other		14,142		5,011
Total	$	170,246	$	123,046

7. Drilling and Other Property and Equipment

     Cost and accumulated depreciation of drilling and other property and equipment are summarized as follows:

	September 30,			December 31,
	2009			2008
	(In thousands)
Drilling rigs and equipment	$	6,350,960		$	5,600,306
Construction work-in-progress		490,024			—
Land and buildings		36,532			35,069
Office equipment and other		36,616			34,021
Cost		6,914,132			5,669,396
Less: accumulated depreciation		(2,512,002	)		(2,255,023	)
Drilling and other property and equipment, net	$	4,402,130		$	3,414,373

     In June 2009, we acquired theOcean Courage, a newbuild, dynamically positioned, semisubmersible drilling rig, for $460.0 million, exclusive of final commissioning and initial mobilization costs, drill string and other necessary capital spares.

     On September 29, 2009, we acquired from PetroRig II Pte Ltd the construction contract to purchase from Jurong Shipyard Pte Ltd, or Jurong Shipyard, a newbuild, 7,500 foot, dynamically positioned, semisubmersible drilling rig. We funded the final payment to Jurong Shipyard on September 30, 2009, and the purchase of the rig was completed on October 1, 2009 in Singapore. The aggregate amount of the consideration paid to acquire the construction contract and the final payment to Jurong Shipyard under the construction contract was approximately $490.0 million and has been presented in the table above as construction work-in-progress. The rig has been renamed theOcean Valor.

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8. Accrued Liabilities

     Accrued liabilities consist of the following:

	September 30,		December 31,
	2009		2008
	(In thousands)
Accrued maintenance/capital projects	$	87,837	$	106,135
Payroll and benefits		70,466		69,326
Deferred revenue		70,020		39,307
Rig operating expenses		24,664		30,056
Interest payable		16,115		10,385
Personal injury and other claims		9,988		10,489
Foreign currency forward exchange contracts		229		37,301
Hurricane related expenses		—		5,080
Other		18,919		21,447
Total	$	298,238	$	329,526

9. Long-Term Debt

     Long-term debt consists of the following:

	September 30,		December 31,
	2009		2008
	(In thousands)
Zero Coupon Debentures (due 2020)	$	4,143	$	4,036
5.15% Senior Notes (due 2014)		249,667		249,623
4.875% Senior Notes (due 2015)		249,658		249,621
5.875% Senior Notes (due 2019)		499,278		—
		1,002,746		503,280
Less: Current maturities		4,143		—
Total	$	998,603	$	503,280

     At September 30, 2009, there was $6.0 million aggregate principal amount at maturity, or $4.1 million accreted, or carrying, value, of our Zero Coupon Debentures outstanding.

     On October 8, 2009, we issued $500.0 million aggregate principal amount of senior unsecured notes. See Note 13.

     5.875% Senior Notes

          On May 4, 2009, we issued $500.0 million aggregate principal amount of our 5.875% Senior Notes due May 1, 2019, or 5.875% Senior Notes, for general corporate purposes. The 5.875% Senior Notes were issued at an offering price of 99.851% of the principal and resulted in net proceeds to us of approximately $495.3 million.

          The notes bear interest at 5.875% per year, payable semiannually in arrears on May 1 and November 1 of each year, beginning November 1, 2009, and mature on May 1, 2019. The 5.875% Senior Notes are unsecured and unsubordinated obligations of Diamond Offshore Drilling, Inc., or DODI, and rank equal in right of payment to existing and future unsecured and unsubordinated indebtedness of DODI. We have the right to redeem all or a portion of these notes for cash at any time or from time to time, on at least 15 days but not more than 60 days prior written notice, at the redemption price specified in the governing indenture plus accrued and unpaid interest to the date of redemption.

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     As reflected in the table below, the holders of our outstanding Zero Coupon Debentures have the right to require us to purchase all or a portion of their outstanding debentures on June 6, 2010. The aggregate maturities of long-term debt for each of the five years subsequent to September 30, 2009 are as follows:

(In thousands)
2010	$	4,143
2011		—
2012		—
2013		—
2014		249,667
Thereafter		748,936
		1,002,746
Less: Current maturities		(4,143	)
Total	$	998,603

10. Commitments and Contingencies

     Various claims have been filed against us in the ordinary course of business, including claims by offshore workers alleging personal injuries. In accordance with SFAS No. 5, “Accounting for Contingencies,” or SFAS 5, we have assessed each claim or exposure to determine the likelihood that the resolution of the matter might ultimately result in an adverse effect on our financial condition, results of operations and cash flows. When we determine that an unfavorable resolution of a matter is probable and such amount of loss can be determined, we record a reserve for the estimated loss at the time that both of these criteria are met. Our management believes that we have established adequate reserves for any liabilities that may reasonably be expected to result from these claims.

     Litigation.During the second quarter of 2009, the U.S. District Court ruled in our favor and dismissed a lawsuit filed in January 2005 by Total E&P USA, Inc. and several oil companies against us alleging that our semisubmersible rig, theOcean America, damaged a natural gas pipeline in the Gulf of Mexico during Hurricane Ivan. The plaintiffs have appealed the judgment.

     We are one of several unrelated defendants in lawsuits filed in the Circuit Courts of the State of Mississippi alleging that defendants manufactured, distributed or utilized drilling mud containing asbestos and, in our case, allowed such drilling mud to have been utilized aboard our offshore drilling rigs. The plaintiffs seek, among other things, an award of unspecified compensatory and punitive damages. We expect to receive complete defense and indemnity from Murphy Exploration & Production Company pursuant to the terms of our 1992 asset purchase agreement with them. We are unable to estimate our potential exposure, if any, to these lawsuits at this time but do not believe that ultimate liability, if any, resulting from this litigation will have a material adverse effect on our financial condition, results of operations and cash flows.

     Various other claims have been filed against us in the ordinary course of business. In the opinion of our management, no pending or known threatened claims, actions or proceedings against us are expected to have a material adverse effect on our consolidated financial position, results of operations and cash flows.

     Personal Injury Claims. Our deductible for liability insurance coverage for personal injury claims, which primarily result from Jones Act liability in the Gulf of Mexico, is $5.0 million per occurrence, with no aggregate deductible. The Jones Act is a federal law that permits seamen to seek compensation for certain injuries during the course of their employment on a vessel and governs the liability of vessel operators and marine employers for the work-related injury or death of an employee. We engage experts to assist us in estimating our aggregate reserve for personal injury claims based on our historical losses and utilizing various actuarial models. At September 30, 2009, our estimated liability for personal injury claims was $32.7 million, of which $9.4 million and $23.3 million were recorded in “Accrued liabilities” and “Other liabilities,” respectively, in our Consolidated Balance Sheets. At December 31, 2008, our estimated liability for personal injury claims was $30.1 million, of which $9.5 million and $20.6 million were recorded in “Accrued liabilities” and “Other liabilities,” respectively, in our Consolidated Balance Sheets. The eventual settlement or adjudication of these claims could differ materially from our estimated amounts due to uncertainties such as:

• the severity of personal injuries claimed;

• significant changes in the volume of personal injury claims;

• the unpredictability of legal jurisdictions where the claims will ultimately be litigated;

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• inconsistent court decisions; and

• the risks and lack of predictability inherent in personal injury litigation.

11. Segments and Geographic Area Analysis

     Although we provide contract drilling services with different types of offshore drilling rigs and also provide such services in many geographic locations, we have aggregated these operations into one reportable segment based on the similarity of economic characteristics among all divisions and locations, including the nature of services provided and the type of customers of such services, in accordance with FASB ASC Topic 280, Segment Reporting (previously SFAS No. 131, “Disclosures about Segments of an Enterprise and Related Information”).

     Revenues from contract drilling services by equipment-type are listed below:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2009		2008		2009		2008
	(In thousands)
High Specification Floaters	$	353,318	$	344,024	$	999,979	$	979,313
Intermediate Semisubmersibles		421,145		401,891		1,303,907		1,239,711
Jack-ups		110,818		136,038		360,561		369,895
Total contract drilling revenues		885,281		881,953		2,664,447		2,588,919
Revenues related to reimbursable expenses		23,094		18,423		76,055		51,931
Total revenues	$	908,375	$	900,376	$	2,740,502	$	2,640,850

Geographic Areas

     At September 30, 2009, our drilling rigs were located offshore thirteen countries in addition to the United States. As a result, we are exposed to the risk of changes in social, political and economic conditions inherent in international operations and our results of operations and the value of our international assets are affected by fluctuations in foreign currency exchange rates. Revenues by geographic area are presented by attributing revenues to the individual country or areas where the services were performed.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2009		2008		2009		2008
	(In thousands)
United States	$	285,665	$	369,410	$	975,844	$	1,088,971
International:
Australia/Asia/Middle East		169,910		166,741		543,368		476,349
Europe/Africa/Mediterranean		179,588		131,999		490,390		386,767
South America		191,044		150,711		488,454		436,315
Mexico		82,168		81,515		242,446		252,448
Total revenues	$	908,375	$	900,376	$	2,740,502	$	2,640,850

12. Income Taxes

     Our income tax expense is a function of the mix between our domestic and international pre-tax earnings or losses, as well as the mix of international tax jurisdictions in which we operate. Certain of our international rigs are owned and operated, directly or indirectly, by Diamond Offshore International Limited, or DOIL, a Cayman Islands subsidiary which we wholly own. It is our intention to indefinitely reinvest future earnings of DOIL to finance foreign activities except to the extent that such earnings were immediately subject to U.S. federal income taxes and except for the earnings of Diamond East Asia Limited, or DEAL, a wholly-owned subsidiary of DOIL formed in December 2008. Accordingly, U.S. income taxes have been provided on the earnings of DEAL.

     During the three months ended September 30, 2009 we reached an agreement with the Internal Revenue Service to settle the audits of the tax years 2004 through 2006 for total additional income tax expense of $55,000. Return to

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provision adjustments made during the three months ended September 30, 2009 that were associated with the filing of our 2008 tax returns in various jurisdictions resulted in additional tax expense of $11.0 million.

     On March 31, 2009, the statute of limitations relative to a 2003 uncertain tax position in Mexico expired. As a consequence we reversed $5.5 million of previously accrued interest expense and $5.9 million of previously accrued tax expense, $0.8 million of which had been accrued for penalties.

13. Subsequent Event

     On October 8, 2009, we issued $500.0 million aggregate principal amount of our 5.70% Senior Notes due 2039 for general corporate purposes. The notes were issued at an offering price of 99.344% of the principal and resulted in net proceeds to us of approximately $491.9 million, exclusive of accrued issuance costs. The notes are unsecured and bear interest at 5.70% per year, payable semiannually in arrears on April 15 and October 15, and mature on October 15, 2039.

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ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

     The following discussion should be read in conjunction with our unaudited consolidated financial statements (including the notes thereto) included elsewhere in this report and our audited consolidated financial statements and the notes thereto, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Item 1A, “Risk Factors” included in our Annual Report on Form 10-K for the year ended December 31, 2008 and Item 1A of Part II, “Risk Factors,” included in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2009. References to “Diamond Offshore,” “we,” “us” or “our” mean Diamond Offshore Drilling, Inc., a Delaware corporation, and its subsidiaries.

     We provide contract drilling services to the energy industry around the globe and are a leader in offshore drilling. With the addition of the 10,000 foot, dynamically positioned, semisubmersibleOcean Couragein June 2009 and the addition of the 7,500 foot, dynamically positioned, semisubmersibleOcean Valorin October 2009, we now have a fleet of 47 offshore rigs currently consisting of 32 semisubmersibles, 14 jack-ups and one drillship.

Overview

Industry Conditions

     The global economic recession continued to weigh on energy demand in the third quarter of 2009. Crude oil prices averaged around $70 per barrel during the period, but remained volatile. Against this background, demand and pricing for all but the highest-specification equipment has remained weak compared with the same period in 2008, with some customers actively seeking to farm-out time to other operators on rigs they have under contract. In effect, offering to farm out rigs creates additional supply against which we must compete. The decline in drilling activity is expected to be further exacerbated by the influx of new-build rigs over the next several years, particularly in regard to jack-up units. We expect our extensive contract backlog to help mitigate the impact of the current market conditions on us at least through the end of 2009 and into 2010; however, we have experienced negative effects of the current market such as customer credit problems, customers attempting to renegotiate or terminate contracts, one customer seeking bankruptcy protection, a further slowing in the pace of new contracting activity, declines in dayrates for new contracts, declines in utilization and the stacking of idle equipment.

     Floaters

     Approximately 88% of the time on our intermediate and high-specification floater rigs is committed for the remainder of 2009. Additionally, commitments for 75% of the time on our floating rigs extend at least through 2010, with 10% of our floating units having contracts extending into the 2014-2015 timeframe.

     During the third quarter, we reached an agreement with a customer to employ the recently purchased dynamically positioned, high-specification rig,Ocean Courage, under a five-year contract at a dayrate of $395,000, plus a potential 8% bonus. The rig, which is currently mobilizing from Singapore, is initially scheduled to work in the U.S. Gulf of Mexico, or GOM, with commencement of activity expected in early 2010. In addition, we reached an agreement with one of our customers in the GOM on a second one-year extension for the mid-water unitOcean Saratoga,to occupy the rig until mid 2011. In exchange for the extension, we agreed to a varying dayrate structure which provides for lower dayrates during the four-month period when the rig is limited as to where it may operate during hurricane season due to regulatory restrictions, and higher dayrates at other times. Additionally, at the close of the third quarter we announced our purchase of another newbuild rig, which we have named theOcean Valor. The dynamically positioned, high-specification unit is undergoing final commissioning, and we believe there are multiple opportunities to employ the rig on future deepwater projects.

     International Jack-ups

     The industry’s jack-up market is divided between an international sector and a U.S. sector, with the international sector historically characterized by contracts of longer duration and higher prices, compared to the generally shorter term and lower priced domestic sector. However, to date in 2009 demand and dayrates have softened internationally. Based on analyst reports to the effect that less than 20% of the industry’s new-build jack-up order book is under contract, it is expected that an oversupply of jack-up rigs will have an increasingly negative impact on the international jack-up sector during 2009 and beyond.

     GOM Jack-ups

     In the domestic jack-up sector, lower natural gas prices have negatively impacted both demand and dayrates. In response, where possible we are continuing to seek to move units out of the GOM and into markets with generally

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longer contract duration and higher prices. Two of our five jack-up rigs in the GOM are under contract. To reduce costs, the remaining three mat rigs have been stacked and are not being actively marketed. Absent a sustained improvement in natural gas prices, weakness in the GOM is likely to continue in 2009, with the possibility of additional rigs being cold-stacked by the industry in an effort to help bring equipment supply and demand into equilibrium. The number of working jack-ups in the GOM remains near its lowest level since the early 1970’s.

Contract Drilling Backlog

     The following table reflects our contract drilling backlog as of October 22, 2009, February 5, 2009 (the date reported in our Annual Report on Form 10-K for the year ended December 31, 2008), and October 23, 2008 (the date reported in our Quarterly Report on Form 10-Q for the quarter ended September 30, 2008). The 2008 period includes both firm commitments (typically represented by signed contracts), as well as previously-disclosed letters of intent, or LOIs, where indicated. An LOI is subject to customary conditions, including the execution of a definitive agreement, and as such may not result in a binding contract. Contract drilling backlog is calculated by multiplying the contracted operating dayrate by the firm contract period and adding one-half of any potential rig performance bonuses. Our calculation also assumes full utilization of our drilling equipment for the contract period (excluding scheduled shipyard and survey days); however, the amount of actual revenue earned and the actual periods during which revenues are earned will be different than the amounts and periods shown in the tables below due to various factors. Utilization rates, which generally approach 95-98% during contracted periods, can be adversely impacted by downtime due to various operating factors including, but not limited to, weather conditions and unscheduled repairs and maintenance. Contract drilling backlog excludes revenues for mobilization, demobilization, contract preparation and customer reimbursables. No revenue is generally earned during periods of downtime for regulatory surveys. Changes in our contract drilling backlog between periods are a function of the performance of work on term contracts, as well as the extension or modification of existing term contracts and the execution of additional contracts.

	October 22,		February 5,		October 23,
	2009(1)		2009		2008(2)
			(In thousands)
Contract Drilling Backlog
High-Specification Floaters	$	4,450,000	$	4,346,000	$	4,720,000
Intermediate Semisubmersibles		4,061,000		5,567,000		6,302,000
Jack-ups		249,000		346,000		428,000
Total	$	8,760,000	$	10,259,000	$	11,450,000

(1)	Contract drilling backlog as of October 22, 2009 included an aggregate $124.1 million in contract drilling revenue related to future work for one of our high-specification floaters for which a definitive agreement has not yet been executed.
(2)	Contract drilling backlog as of October 23, 2008 included an aggregate $189.8 million in contract drilling revenue related to anticipated future work under an LOI expected to be earned by one of our high-specification floaters during 2009 and 2010.

     The following table reflects the amount of our contract drilling backlog by year as of October 22, 2009.

	For the Years Ending December 31,
	Total		2009(1)		2010		2011		2012 - 2016
	(In thousands)
Contract Drilling Backlog
High-Specification Floaters(2)	$	4,450,000	$	380,000	$	1,522,000	$	1,182,000	$	1,366,000
Intermediate Semisubmersibles		4,061,000		396,000		1,325,000		893,000		1,447,000
Jack-ups		249,000		85,000		136,000		28,000		—
Total	$	8,760,000	$	861,000	$	2,983,000	$	2,103,000	$	2,813,000

(1)	Represents a three-month period beginning October 1, 2009.
(2)	Contract drilling backlog included an $118.7 million and $5.4 million in contract drilling revenue related to future work in 2010 and 2011, respectively, for which a definitive agreement has not yet been executed.

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     The following table reflects the percentage of rig days committed by year as of October 22, 2009. The percentage of rig days committed is calculated as the ratio of total days committed under contracts, as well as scheduled shipyard, survey and mobilization days for all rigs in our fleet to total available days (number of rigs multiplied by the number of days in a particular year). Total available days have been calculated based on the expected final commissioning date for theOcean Valor.

	For the Years Ending December 31,
	2009(1)			2010			2011			2012 - 2016
Rig Days Committed(2)
High-Specification Floaters		91	%		82	%		54	%		13	%
Intermediate Semisubmersibles		87	%		70	%		48	%		15	%
Jack-ups		60	%		24	%		4	%		—

(1)	Represents a three-month period beginning October 1, 2009.
(2)	Includes approximately 274 and 517 scheduled shipyard, survey and mobilization days for 2009 and 2010, respectively.

General

     The two most significant variables affecting revenues are dayrates for rigs and rig utilization rates, each of which is a function of rig supply and demand in the marketplace. Demand for drilling services is dependent upon the level of expenditures set by oil and gas companies for offshore exploration and development, as well as a variety of political and economic factors. The availability of rigs in a particular geographical region also affects both dayrates and utilization rates. These factors are not within our control and are difficult to predict.

     Demand affects the number of days our fleet is utilized and the dayrates earned. As utilization rates increase, dayrates tend to increase as well, reflecting the lower supply of available rigs. Conversely, as utilization rates decrease, dayrates tend to decrease as well, reflecting the excess supply of rigs. When a rig is idle, no dayrate is earned and revenues will decrease as a result. Revenues can also be affected as a result of the acquisition or disposal of rigs, required surveys and shipyard upgrades. In order to improve utilization or realize higher dayrates, we may mobilize our rigs from one market to another. However, during periods of mobilization, revenues may be adversely affected. As a response to changes in demand, we may withdraw a rig from the market by stacking it or may reactivate a rig stacked previously, which may decrease or increase revenues, respectively.

     Operating Income.Our operating income is primarily affected by revenue factors, but is also a function of varying levels of operating expenses. Our operating expenses represent all direct and indirect costs associated with the operation and maintenance of our drilling equipment. The principal components of our operating costs are, among other things, direct and indirect costs of labor and benefits, repairs and maintenance, freight, regulatory inspections, boat and helicopter rentals and insurance. Labor and repair and maintenance costs represent the most significant components of our operating expenses. In general, our labor costs increase primarily due to higher salary levels, rig staffing requirements and costs associated with labor regulations in the geographic regions in which our rigs operate.

     Costs to repair and maintain our equipment fluctuate depending upon the type of activity the drilling unit is performing, as well as the age and condition of the equipment and the regions in which our rigs are working.

     Operating expenses generally are not affected by changes in dayrates, and short-term reductions in utilization do not necessarily result in lower operating expenses. For instance, if a rig is to be idle for a short period of time, few decreases in operating expenses may actually occur since the rig is typically maintained in a prepared or “ready-stacked” state with a full crew. In addition, when a rig is idle, we are responsible for certain operating expenses such as rig fuel and supply boat costs, which are typically costs of the operator when a rig is under contract. However, if the rig is to be idle for an extended period of time, we may reduce the size of a rig’s crew and take steps to “cold stack” the rig, which lowers expenses and partially offsets the impact on operating income. We recognize, as incurred, operating expenses related to activities such as inspections, painting projects and routine overhauls that meet certain criteria and which maintain rather than upgrade our rigs. These expenses vary from period to period. Costs of rig enhancements are capitalized and depreciated over the expected useful lives of the enhancements. Higher depreciation expense decreases operating income in periods subsequent to capital upgrades.

     Our operating income is negatively impacted when we perform certain regulatory inspections, which we refer to as a 5-year survey, or special survey, that are due every five years for each of our rigs. Operating revenue decreases because these surveys are performed during scheduled downtime in a shipyard. Operating expenses increase as a result of these surveys due to the cost to mobilize the rigs to a shipyard, inspection costs incurred and repair and

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maintenance costs. Repair and maintenance costs may be required resulting from the survey or may have been previously planned to take place during this mandatory downtime. The number of rigs undergoing a 5-year survey will vary from year to year, as well as from quarter to quarter.

     In addition, operating income may be negatively impacted by intermediate surveys, which are performed at interim periods between 5-year surveys. Intermediate surveys are generally less extensive in duration and scope than a 5-year survey. Although an intermediate survey may require some downtime for the drilling rig, it normally does not require dry-docking or shipyard time, except for rigs located in the U.K. and Norwegian sectors of the North Sea.

     During the remainder of 2009, we currently expect to spend approximately 235 rig days for 5-year and intermediate surveys, the mobilization of rigs, contractually required modifications for international contracts and extended maintenance projects. We can provide no assurance as to the exact timing and/or duration of downtime associated with regulatory inspections, planned rig mobilizations and other shipyard projects. See “ –Contract Drilling Backlog.”

     We have elected to self-insure for physical damage to rigs and equipment caused by named windstorms in the U.S. Gulf of Mexico. If named windstorms in the U.S. Gulf of Mexico cause significant damage to our rigs, it could have a material adverse effect on our financial position, results of operations and cash flows. However, under our insurance policy that expires on May 1, 2010, we continue to carry physical damage insurance for certain losses other than those caused by named windstorms in the U.S. Gulf of Mexico, for which our deductible for physical damage is $25.0 million per occurrence.

Critical Accounting Estimates

     Our significant accounting policies are discussed in Note 1 of our notes to consolidated financial statements included in Item 1 of Part I of this report and in Note 1 of our notes to audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2008. There were no material changes to these policies during the nine months ended September 30, 2009.

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Results of Operations

     Although we perform contract drilling services with different types of drilling rigs and in many geographic locations, there is a similarity of economic characteristics among all our divisions and locations, including the nature of services provided and the type of customers for our services. We believe that the combination of our drilling rigs into one reportable segment is the appropriate aggregation in accordance with FASB Accounting Standards Codification, or ASC, Topic 280, Segment Reporting (previously Statement of Financial Accounting Standards No. 131, “Disclosures about Segments of an Enterprise and Related Information”). However, for purposes of this discussion and analysis of our results of operations, we provide greater detail with respect to the types of rigs in our fleet and the geographic regions in which they operate to enhance the reader’s understanding of our financial condition, changes in financial condition and results of operations.

Three Months Ended September 30, 2009 and 2008

     Comparative data relating to our revenue and operating expenses by equipment type are listed below.

	Three Months Ended
	September 30,							Favorable/
	2009			2008				(Unfavorable)
	(In thousands)
CONTRACT DRILLING REVENUE
High-Specification Floaters	$	353,318		$	344,024			$	9,294
Intermediate Semisubmersibles		421,145			401,891				19,254
Jack-ups		110,818			136,038				(25,220	)
Total Contract Drilling Revenue	$	885,281		$	881,953			$	3,328
Revenues Related to Reimbursable Expenses	$	23,094		$	18,423			$	4,671
CONTRACT DRILLING EXPENSE
High-Specification Floaters	$	103,258		$	94,713			$	(8,545	)
Intermediate Semisubmersibles		142,156			162,011				19,855
Jack-ups		52,559			58,159				5,600
Other		6,173			(610	)			(6,783	)
Total Contract Drilling Expense	$	304,146		$	314,273			$	10,127
Reimbursable Expenses	$	22,873		$	18,126			$	(4,747	)
OPERATING INCOME
High-Specification Floaters	$	250,060		$	249,311			$	749
Intermediate Semisubmersibles		278,989			239,880		��		39,109
Jack-ups		58,259			77,879				(19,620	)
Other		(6,173	)		610				(6,783	)
Reimbursable expenses, net		221			297				(76	)
Depreciation		(86,485	)		(72,155	)			(14,330	)
General and administrative expense		(15,628	)		(13,944	)			(1,684	)
Casualty loss		—			(6,281	)			6,281
Gain on disposition of assets		217			228				(11	)
Total Operating Income	$	479,460		$	475,825			$	3,635
Other income (expense):
Interest income		1,879			3,055				(1,176	)
Interest expense		(14,031	)		(2,989	)			(11,042	)
Foreign currency transaction gain (loss)		8,313			(29,047	)			37,360
Other, net		(336	)		581				(917	)
Income before income tax expense		475,285			447,425				27,860
Income tax expense		(111,151	)		(136,892	)			25,741
NET INCOME	$	364,134		$	310,533			$	53,601

     During the third quarter of 2009, the global economic recession continued to impact our industry, resulting in reduced demand for energy and volatile crude oil prices. Aggregate revenues for the third quarter of 2009 increased $3.3 million, or less than 1%, compared to the third quarter of 2008. Floater revenues increased $28.5 million due to the inclusion of a full quarter of operating revenues for our recently upgradedOcean Monarch. However, this

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increase in revenues was partially offset by a $25.2 million decrease in revenues generated by our jack-up fleet compared to the third quarter of 2008. The decreased contribution by our jack-up fleet was primarily due to the cold-stacking of three of our mat-supported jack-up rigs in the GOM and the absence of revenues from theOcean Tower,which was taken out of service in September 2008 as a result of damages sustained in Hurricane Ike in September 2008.

     Total contract drilling expense decreased $10.1 million, or 3%, during the third quarter of 2009 compared to the same period in 2008. The net decrease in operating cost for the three months ended September 30, 2009 reflects overall lower survey and related costs compared to the prior year period, partially offset by the inclusion of normal operating costs for the recently upgradedOcean Monarchand our new jack-upsOcean ShieldandOcean Scepter,and contract preparation.

     Depreciation expense increased $14.3 million to $86.5 million during the third quarter of 2009, or 20% compared to the third quarter of 2008, due to a higher depreciable asset base.

High-Specification Floaters.

	Three Months Ended
	September 30,				Favorable/
	2009		2008		(Unfavorable)
	(In thousands)
HIGH-SPECIFICATION FLOATERS:
CONTRACT DRILLING REVENUE
GOM	$	237,635	$	269,599	$	(31,964	)
Australia/Asia/Middle East		40,936		13,712		27,224
Europe/Africa/Mediterranean		10,499		—		10,499
South America		64,248		60,713		3,535
Total Contract Drilling Revenue	$	353,318	$	344,024	$	9,294
CONTRACT DRILLING EXPENSE
GOM	$	60,116	$	59,557	$	(559	)
Australia/Asia/Middle East		8,203		10,702		2,499
Europe/Africa/Mediterranean		3,008		—		(3,008	)
South America		31,931		24,454		(7,477	)
Total Contract Drilling Expense	$	103,258	$	94,713	$	(8,545	)
OPERATING INCOME	$	250,060	$	249,311	$	749

     GOM.Revenues generated by our high-specification floaters operating in the GOM decreased $32.0 million during the third quarter of 2009 compared to the same period in 2008. Comparing the quarters ended September 30, 2009 and 2008, we had a net decrease of one high-specification semisubmersible rig in the GOM with the relocation of theOcean Questto Brazil (late first quarter 2009) andOcean Valiantto Angola (early third quarter 2009) and the commencement of drilling service of theOcean Monarchin the GOM (late first quarter 2009). The effect of these rig relocations was a net $3.7 million reduction in revenues in the third quarter of 2009 compared to the same period in 2008.

     Excluding the effect of the rig relocations discussed above, average utilization for our high-specification rigs operating in the GOM decreased from 98% in the third quarter of 2008 to 80%, primarily due to theOcean Starbeing ready-stacked for the entire third quarter of 2009. The decrease in average utilization resulted in a $42.6 million reduction in revenues in the third quarter of 2009 compared to the same period of 2008. Excluding theOcean Monarch, Ocean QuestandOcean Valiant, average operating revenue per day for our high-specification floaters in this market increased to $444,500 during the third quarter of 2009 compared to $436,500 in the third quarter of 2008, resulting in additional revenues of $14.3 million.

     Total operating costs during the third quarter of 2009 for our high-specification floaters in the GOM remained constant compared to the prior year quarter. Increased costs associated with normal operations of theOcean Monarchin the GOM and the ready-stacking of theOcean Starduring the third quarter of 2009 were mostly offset by decreased operating costs for theOcean QuestandOcean Valiantas a result of their departures from the GOM.

     Australia/Asia/Middle East.During the third quarter of 2009, theOcean Rover,our high-specification rig operating offshore Malaysia, generated $27.2 million in additional revenues compared to the third quarter of 2008.

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The increase in revenues is primarily due to the nearly full utilization of the rig during the third quarter of 2009, compared to 52 days of downtime for a special survey during the 2008 quarter ($17.6 million), and an increase in the average operating dayrate from $345,000 earned during the third quarter of 2008 to $451,200 during the third quarter of 2009 ($9.6 million).

     Operating costs during the third quarter of 2009 decreased $2.5 million over the third quarter of the prior year, due primarily to the absence of costs associated with the rig’s special survey in 2008.

     Europe/Africa/Mediterranean.TheOcean Valiantmobilized from the GOM to the Europe/Africa/Mediterranean region during the third quarter of 2009. The rig began operating offshore Angola in mid-September 2009 and generated revenues of $10.5 million and incurred normal operating costs of $3.0 million.

     South America.Revenues earned by our high-specification floaters operating offshore Brazil in the third quarter of 2009 increased $3.5 million compared to the third quarter of 2008. TheOcean Quest(which relocated from the GOM late in the first quarter of 2009) generated revenues of $33.4 million during the third quarter of 2009. Partially offsetting the revenue contribution by theOcean Questwas a $29.5 million decrease in revenues generated by theOcean Alliancedue to a decrease in average operating dayrate for theOcean Alliancefrom $522,900 during the third quarter of 2008 to $159,100 during the third quarter of 2009.

     Contract drilling expense for our operations in Brazil increased $7.5 million during the third quarter of 2009 compared to the same period in 2008, primarily due to inclusion of costs associated with operation of theOcean Questoffshore Brazil. The increase in costs during the third quarter of 2009 was partially offset by the absence of costs associated with the repair of theOcean Clipper’s propulsion system incurred in the third quarter of 2008.

Intermediate Semisubmersibles.

	Three Months Ended
	September 30,				Favorable/
	2009		2008		(Unfavorable)
	(In thousands)
INTERMEDIATE SEMISUBMERSIBLES:
CONTRACT DRILLING REVENUE
GOM	$	16,935	$	32,543	$	(15,608	)
Mexico		55,174		54,153		1,021
Australia/Asia/Middle East		90,843		90,566		277
Europe/Africa/Mediterranean		145,001		135,412		9,589
South America		113,192		89,217		23,975
Total Contract Drilling Revenue	$	421,145	$	401,891	$	19,254
CONTRACT DRILLING EXPENSE
GOM	$	5,570	$	12,678	$	7,108
Mexico		11,638		12,934		1,296
Australia/Asia/Middle East		32,838		41,179		8,341
Europe/Africa/Mediterranean		36,218		49,742		13,524
South America		55,892		45,478		(10,414	)
Total Contract Drilling Expense	$	142,156	$	162,011	$	19,855
OPERATING INCOME	$	278,989	$	239,880	$	39,109

     GOM.We currently have one intermediate semisubmersible rig, theOcean Saratoga, operating in the GOM due to the relocation of theOcean Ambassadorto Brazil early in the third quarter of 2009. Revenues for theOcean Saratogadecreased $8.3 million in the third quarter of 2009 compared to the same quarter of 2008, primarily due to a decrease in average operating dayrate from $287,100 in the third quarter of 2008 to $196,700 during the third quarter of 2009. TheOcean Ambassadorgenerated revenues of $6.1 million and incurred operating expenses of $7.4 million during the third quarter of 2008 while operating in the GOM.

     Australia/Asia/Middle East. Operating revenue for our intermediate semisubmersibles working in the Australia/Asia/Middle East region remained constant, comparing the third quarter of 2009 to the third quarter of 2008. TheOcean General,which was undergoing a special survey during the majority of the third quarter of 2008, generated an additional $19.7 million during the third quarter of 2009. However, the favorable contribution by the

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Ocean Generalwas mostly offset by the negative effect of the ready-stacking of theOcean Bountyin mid-July 2009 and an out-of-period adjustment for disputed revenue for theOcean Patriot.

     Operating costs in the Australia/Asia/Middle East region decreased $8.3 million in the third quarter of 2009, compared to the prior year period, primarily due to the absence of costs associated with the 2008 special surveys of theOcean BountyandOcean Generaland reduced personnel-related costs for theOcean Bounty.These reductions in costs were partially offset by additional costs associated with mobilizing theOcean Bountyto a stack location in Singapore.

     Europe/Africa/Mediterranean.Operating revenue for our intermediate semisubmersibles working in the Europe/Africa/Mediterranean region increased $9.6 million in the third quarter of 2009 compared to the same period in 2008. Our four rigs currently operating in the North Sea (both U.K. and Norwegian sectors) contributed $7.3 million in additional revenue during the third quarter of 2009. Average utilization increased to 94% for the third quarter of 2009, compared to 87% during the third quarter of 2008, and resulted in the generation of $8.6 million in additional revenues. The favorable contribution from the increase in North Sea utilization was partially offset by a decrease in average operating revenue per day from $351,100 during the third quarter of 2008 to $346,300 for the comparable period of 2009, resulting in a $1.3 million decline in revenues. TheOcean Lexingtoncompleted its contract in the Mediterranean and mobilized to a shipyard in Cadiz, Spain in the third quarter of 2009 to prepare for its upcoming contract offshore Brazil. In connection with the completion of its Egyptian contract, theOcean Lexingtonearned a $7.5 million demobilization fee.

     Contract drilling expense for our intermediate semisubmersible rigs operating in the Europe/Africa/Mediterranean markets decreased $13.5 million in the third quarter of 2009 compared to the third quarter of 2008, primarily due to the absence of costs related to surveys and scheduled shipyard work that occurred during the third quarter of 2008.

     South America. Revenues generated by our intermediate semisubmersibles working in the South American region increased $24.0 million in the third quarter of 2009 compared to the same period in 2008. With the relocation of theOcean Ambassadorfrom the GOM to Brazil in the second quarter of 2009, we now have seven semisubmersible drilling rigs operating in the region. Our rigs operating offshore Brazil earned average operating revenue per day of $221,400 during the third quarter of 2009, compared to $214,800 during the third quarter of 2008, and average utilization increased from 89% during the third quarter of 2008 to 91% for the same period in 2009.

     The $10.4 million increase in operating costs in the region for the third quarter of 2009, compared to the same quarter of 2008, is primarily the result of an additional rig operating in the region, a higher cost structure for theOcean Workeroperating offshore Brazil compared to Trinidad and Tobago, costs associated with theOcean Yatzy’s 2009 survey and thruster change out and higher freight and customs costs that are inherent in the region.

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     Jack-Ups.

	Three Months Ended
	September 30,				Favorable/
	2009		2008		(Unfavorable)
	(In thousands)
JACK-UPS:
CONTRACT DRILLING REVENUE
GOM	$	8,001	$	48,846	$	(40,845	)
Mexico		26,994		27,364		(370	)
Australia/Asia/Middle East		38,131		27,720		10,411
Europe/Africa/Mediterranean		24,088		31,328		(7,240	)
South America		13,604		780		12,824
Total Contract Drilling Revenue	$	110,818	$	136,038	$	(25,220	)
CONTRACT DRILLING EXPENSE
GOM	$	10,443	$	24,895	$	14,452
Mexico		11,050		8,019		(3,031	)
Australia/Asia/Middle East		12,992		12,244		(748	)
Europe/Africa/Mediterranean		9,180		10,330		1,150
South America		8,894		2,671		(6,223	)
Total Contract Drilling Expense	$	52,559	$	58,159	$	5,600
OPERATING INCOME	$	58,259	$	77,879	$	(19,620	)

     GOM.Revenue generated by our jack-up rigs operating in the GOM decreased $40.8 million during the third quarter of 2009 compared to the third quarter of 2008. Average utilization decreased to 27% during the third quarter of 2009 from 90% during the prior year quarter and resulted in a $35.3 million reduction in revenues. In addition, average revenue per day for our GOM jack-up fleet decreased to $53,700 for the third quarter of 2009 from $84,000 during the third quarter of 2008, resulting in a $5.5 million reduction in revenues.

     Contract drilling expense for our jack-ups operating in the GOM decreased $14.5 million during the third quarter of 2009, compared to the same period in 2008, primarily due to a reduction in operating costs as a result of the cold stacking of three of our mat-supported jack-up units in the second quarter of 2009 and a reduction in operating costs for theOcean Tower,which was taken out of service after Hurricane Ike in September 2008.

     Mexico.Revenue generated by our jack-up fleet operating offshore Mexico during the third quarter of 2009 remained unchanged from the prior year quarter as revenues generated by theOcean Summit(which relocated from the GOM early in the third quarter of 2009) more than offset the negative effect on revenues of a decrease in operating dayrate earned by theOcean Nuggetduring the rig’s most recent contract extension.

     The $3.0 million increase in operating costs during the third quarter of 2009, compared to the third quarter of 2008, is primarily attributable to the inclusion of normal operating costs for theOcean Summit.

     Australia/Asia/Middle East. Revenue generated by our jack-up rigs operating in the Australia/Asia/Middle East region increased $10.4 million in the third quarter of 2009 compared to the same period in 2008 primarily due to $8.6 million of incremental revenues earned by theOcean Shield.

     Europe/Africa/Mediterranean. Revenue generated by our jack-up rigs operating in the Europe/Africa/Mediterranean region decreased $7.2 million during the third quarter of 2009 compared to the same period in 2008. The decrease in revenue was primarily due to both of our jack-up rigs operating offshore Egypt during the third quarter of 2009 earning lower dayrates than those earned during the same quarter of the prior year. Average operating revenue per day decreased from $171,100 during the third quarter of 2008 to $89,200 for the third quarter of 2009, reducing revenues by $8.2 million.

     Operating costs in the Europe/Africa/Mediterranean region decreased $1.1 million during the third quarter of 2009, compared to the same quarter in 2008, primarily due to the absence of costs associated with the relocation of theOcean Heritagefrom the Middle East to Egypt during late June 2008.

     South America. Our newly constructed jack-up rig, theOcean Scepter, began operating offshore Argentina late in the third quarter of 2008. The rig generated $13.6 million in revenues and incurred $8.9 million in contract

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drilling expense during the third quarter of 2009, prior to completion of its contract offshore Argentina in July 2009. The rig is currently ready stacked in a shipyard in Uruguay.

Depreciation.

     Depreciation expense increased $14.3 million to $86.5 million during the third quarter of 2009 compared to $72.2 million during the same period in 2008, primarily due to depreciation associated with capital additions in 2008 and 2009, including depreciation of our two newly constructed jack-ups, theOcean ShieldandOcean Scepter, our recently upgraded high specification floater, theOcean Monarch,and the recently acquiredOcean Courage.

Casualty Loss.

     During the third quarter of 2008, we wrote off certain equipment of our jack-up rig, theOcean Tower, that was damaged during Hurricane Ike. We wrote off the net book value of theOcean Tower’s derrick, drill floor and related equipment lost in the storm of approximately $2.6 million and accrued $3.7 million in estimated salvage costs for recovery of equipment from the ocean floor.

Interest Expense.

     Interest expense for the quarters ended September 30, 2009 and 2008 relates primarily to interest accrued on our outstanding indebtedness, net of capitalized interest, and our liabilities for uncertain tax positions. During the third quarter of 2009, interest expense included $7.4 million related to our 5.875% Senior Notes due May 1, 2019, or 5.875% Senior Notes, issued in May 2009. During the third quarter of 2008, we capitalized interest of $4.0 million related to the construction of theOcean Shieldand the upgrade of theOcean Monarch, which were both completed in 2008. We have no current rig construction or upgrade projects that qualify for interest capitalization.

Foreign Currency Transaction Gain (Loss).

     Foreign currency transaction gains (losses) include gains and losses from the settlement of foreign currency forward exchange contracts and unrealized gains and losses from mark-to-market accounting for our foreign currency derivatives not designated as accounting hedges. Such gains and losses fluctuate based on the level of transactions in foreign currencies, as well as fluctuations in such currencies. During the third quarter of 2009, we recognized net foreign currency exchange gains of $8.3 million, including $32,000 in net realized and unrealized losses on foreign currency forward exchange contracts. During the third quarter of 2008, we recognized net foreign currency exchange losses of $29.0 million, including $28.7 million in net unrealized losses resulting from mark-to-market accounting on open positions at September 30, 2008, partially offset by $3.6 million net realized gains on settlement of foreign currency derivatives.

Income Tax Expense.

     Our estimated annual effective tax rate for the three months ended September 30, 2009 was 24.0%, compared to the 29.5% effective tax rate for the same period in 2008. The lower effective tax rate in the current quarter is a result of differences in the mix of our domestic and international pre-tax earnings and losses, respectively, as well as the mix of international tax jurisdictions in which we operate. Also contributing to the lower effective tax in the current period was a repatriation of earnings by one of our wholly owned foreign subsidiaries, Diamond East Asia Limited, to one of our wholly owned domestic subsidiaries. The repatriation brought with it associated foreign tax credits that were previously unrecognized.

     During the three months ended September 30, 2009 we reached an agreement with the Internal Revenue Service to settle the audits of the tax years 2004 through 2006 for total additional income tax expense of $55,000. Return to provision adjustments made during the three months ended September 30, 2009 that were associated with the filing of our 2008 tax returns in various jurisdictions resulted in additional tax expense of $11.0 million.

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Nine Months Ended September 30, 2009 and 2008

     Comparative data relating to our revenue and operating expenses by equipment type are listed below.

	Nine Months Ended
	September 30,						Favorable/
	2009			2008			(Unfavorable)
	(In thousands)
CONTRACT DRILLING REVENUE
High-Specification Floaters	$	999,979		$	979,313		$	20,666
Intermediate Semisubmersibles		1,303,907			1,239,711			64,196
Jack-ups		360,561			369,895			(9,334	)
Total Contract Drilling Revenue	$	2,664,447		$	2,588,919		$	75,528
Revenues Related to Reimbursable Expenses	$	76,055		$	51,931		$	24,124
CONTRACT DRILLING EXPENSE
High-Specification Floaters	$	295,877		$	275,171		$	(20,706	)
Intermediate Semisubmersibles		405,567			437,521			31,954
Jack-ups		187,710			153,260			(34,450	)
Other		17,592			6,764			(10,828	)
Total Contract Drilling Expense	$	906,746		$	872,716		$	(34,030	)
Reimbursable Expenses	$	75,019		$	50,660		$	(24,359	)
OPERATING INCOME
High-Specification Floaters	$	704,102		$	704,142		$	(40	)
Intermediate Semisubmersibles		898,340			802,190			96,150
Jack-ups		172,851			216,635			(43,784	)
Other		(17,592	)		(6,764	)		(10,828	)
Reimbursable expenses, net		1,036			1,271			(235	)
Depreciation		(256,978	)		(212,150	)		(44,828	)
General and administrative expense		(48,109	)		(45,434	)		(2,675	)
Casualty loss		—			(6,281	)		6,281
Gain on disposition of assets		365			505			(140	)
Total Operating Income	$	1,454,015		$	1,454,114		$	(99	)
Other income (expense):
Interest income		3,645			10,369			(6,724	)
Interest expense		(26,436	)		(6,226	)		(20,210	)
Foreign currency transaction gain (loss)		17,921			(14,606	)		32,527
Other, net		315			333			(18	)
Income before income tax expense		1,449,460			1,443,984			5,476
Income tax expense		(349,305	)		(426,780	)		77,475
NET INCOME	$	1,100,155		$	1,017,204		$	82,951

     Operating income for the first nine months of 2009 was constant compared to the first nine months of 2008. During 2009, our contracted revenue backlog has allowed us to partially mitigate the impact of the global economic recession on our industry, resulting in a $75.5 million increase in revenues for the first nine months of 2009 compared to the same period of 2008. TheOcean Monarch, which began service in mid-March 2009 after a major upgrade, generated $84.0 million in revenues during the first nine months of 2009. Our two newbuild jack-up rigs, theOcean Shield andOcean Scepter, contributed incremental revenues of $100.8 million during the first nine months of 2009 compared to the same period in 2008. However, our operating results also reflect the negative impact of ready-stacking theOcean Star, Ocean BountyandOcean Scepterand the cold stacking of our three mat-supported GOM jack-up rigs. In addition, the international jack-up market, which had been strong throughout the majority of 2008, also reflected softening demand and reduced dayrates during the first nine months of 2009.

     Total contract drilling expense increased $34.0 million, or 4%, during the first nine months of 2009 compared to the same period in 2008. Operating costs during the 2009 period are inclusive of normal operating costs for the recently upgradedOcean Monarchand our two new jack-ups.

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     Depreciation expense increased $44.8 million to $257.0 million during the first nine months of 2009, or 17% compared to the first nine months of 2008, due to a higher depreciable asset base.

High-Specification Floaters.

	Nine Months Ended
	September 30,				Favorable/
	2009		2008		(Unfavorable)
	(In thousands)
HIGH-SPECIFICATION FLOATERS:
CONTRACT DRILLING REVENUE
GOM	$	730,166	$	787,656	$	(57,490	)
Australia/Asia/Middle East		114,584		51,907		62,677
Europe/Africa/Mediterranean		10,499		—		10,499
South America		144,730		139,750		4,980
Total Contract Drilling Revenue	$	999,979	$	979,313	$	20,666
CONTRACT DRILLING EXPENSE
GOM	$	194,147	$	163,314	$	(30,833	)
Australia/Asia/Middle East		23,954		25,079		1,125
Europe/Africa/Mediterranean		3,008		—		(3,008	)
South America		74,768		86,778		12,010
Total Contract Drilling Expense	$	295,877	$	275,171	$	(20,706	)
OPERATING INCOME	$	704,102	$	704,142	$	(40	)

     GOM.Revenues generated by our high-specification floaters operating in the GOM decreased $57.5 million during the first nine months of 2009 compared to the same period in 2008. Average utilization for our high-specification rigs operating in the GOM, excluding theOcean Monarch, decreased from 93% in the first nine months of 2008 to 76% in the first nine months of 2009, resulting in a $200.6 million decrease in revenues comparing the periods. The decrease in utilization in the first nine months of 2009 was primarily due to downtime associated with contract preparation activities and relocation of theOcean Questto Brazil late in the first quarter of 2009 and theOcean Valiantto Angola in the third quarter of 2009, a higher number of scheduled downtime days for special surveys and repairs during the first nine months of 2009 compared to the first nine months of 2008 and 194 ready-stacked days for two of our rigs.

     Average operating revenue per day for our high-specification floaters in this market, excluding theOcean Monarch, increased to $420,500 during the first nine months of 2009 compared to $387,400 in the first nine months of 2008, resulting in additional revenues of $59.2 million. TheOcean Monarchbegan operating in the GOM late in the first quarter of 2009 and generated revenues of $84.0 million during the first nine months of 2009.

     Operating costs during the first nine months of 2009 for our high-specification floaters in the GOM increased by $30.8 million to $194.1 million compared to the first nine months of 2008. The overall increase in operating costs for the first nine months of 2009 compared to the same period of 2008 was primarily due to higher survey, repair and mobilization costs (primarily for theOcean America), as well as the inclusion of normal operating costs for theOcean Monarch, which began operating under contract in mid-March 2009. These cost increases were partially offset by lower operating costs for theOcean QuestandOcean Valiant, which we relocated to Brazil and Angola, respectively.

     Australia/Asia/Middle East.During the first nine months of 2009, our high-specification rig operating offshore Malaysia, theOcean Rover,generated $62.7 million in additional revenues compared to the first nine months of 2008 primarily due to an increase in average operating revenue per day from $238,400 during the first nine months of 2008 to $428,000 during the first nine months of 2009 ($50.8 million). An increase in utilization for the first nine months of 2009 compared to the same period in 2008, when the rig had 51 days of scheduled downtime for a special survey and related repairs, resulted in the generation of $11.9 million in incremental revenues.

     Europe/Africa/Mediterranean.TheOcean Valiant,which we relocated to offshore Angola at the beginning of the third quarter of 2009, generated revenues of $10.5 million and incurred operating expenses of $3.0 million.

     South America.Revenues earned by our high-specification floaters operating offshore Brazil in the first nine months of 2009 increased $5.0 million compared to the first nine months of 2008. The increase in revenue was

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primarily due to the relocation of theOcean Questfrom the GOM late in the first quarter of 2009 ($53.0 million) and an increase in utilization of our Brazil fleet from 51% during the first nine months of 2008 to 90% in the same period in 2009 ($11.4 million), as a result of 79 incremental rig operating days during the 2009 period. Average operating revenue per day for theOcean Alliance decreased from $420,900 during the first nine months of 2008 to $189,100 during the first nine months of 2009 and resulted in a $58.1 million reduction in revenues.

     Contract drilling expense for our operations in Brazil decreased $12.0 million during the first nine months of 2009 compared to the same period in 2008, primarily due to a reduction in costs attributable to a 2008 survey of theOcean Clipperand repairs to its propulsion system. Cost reductions for the first nine months of 2009, compared to the same period in 2008, were partially offset by the inclusion of normal operating costs for theOcean Quest.

Intermediate Semisubmersibles.

	Nine Months Ended
	September 30,				Favorable/
	2009		2008		(Unfavorable)
	(In thousands)
INTERMEDIATE SEMISUBMERSIBLES:
CONTRACT DRILLING REVENUE
GOM	$	114,495	$	107,675	$	6,820
Mexico		165,055		173,825		(8,770	)
Australia/Asia/Middle East		328,421		270,522		57,899
Europe/Africa/Mediterranean		407,748		391,905		15,843
South America		288,188		295,784		(7,596	)
Total Contract Drilling Revenue	$	1,303,907	$	1,239,711	$	64,196
CONTRACT DRILLING EXPENSE
GOM	$	27,023	$	29,913	$	2,890
Mexico		34,888		44,236		9,348
Australia/Asia/Middle East		90,229		112,736		22,507
Europe/Africa/Mediterranean		101,910		125,595		23,685
South America		151,517		125,041		(26,476	)
Total Contract Drilling Expense	$	405,567	$	437,521	$	31,954
OPERATING INCOME	$	898,340	$	802,190	$	96,150

     GOM.Revenues generated during the first nine months of 2009 by our intermediate semisubmersible fleet operating in the GOM increased $6.8 million, compared to the same period in 2008, while operating expenses decreased $2.9 million, comparing the same periods. The increase in revenues is primarily due to the relocation of theOcean Ambassadorto the GOM from Mexico in the second quarter of 2008 ($20.0 million), partially offset by a decrease in operating dayrate earned by theOcean Saratogaduring the first nine months of 2009 compared to the first nine months of 2008.

     The increase in operating costs for the first nine months of 2009, primarily attributable to the inclusion of normal operating expenses for theOcean Ambassador, were partially offset by a reduction in costs for theOcean Yorktown,which mobilized to Brazil in May 2008.

     Mexico.Revenues generated and contract drilling expense incurred by our intermediate semisubmersibles operating offshore Mexico decreased $8.8 million and $9.3 million, respectively, during the first nine months of 2009 compared to the first nine months of 2008, primarily due to the relocation of theOcean Ambassadorto the GOM.

     Australia/Asia/Middle East. Operating revenue for our intermediate semisubmersibles working in the Australia/Asia/Middle East region increased $57.9 million in the first nine months of 2009 compared to the same period in 2008. An increase in average operating revenue per day from $295,900 during the first nine months of 2008 to $329,700 during the first nine months of 2009 generated additional revenues of $43.1 million during the first nine months of 2009.

     Average utilization in this region increased to 91% during the first nine months of 2009 from 83% during the first nine months of 2008 and contributed $17.6 million in additional revenues. The increase in utilization was

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primarily attributable to a reduction in downtime for theOcean Patriotduring the first nine months of 2009 compared to the comparable period of 2008 when the rig incurred 64 days of unpaid, scheduled downtime for a special survey.

     Contract drilling expense for the Australia/Asia/Middle East region decreased $22.5 million in the first nine months of 2009 compared to the first nine months of 2008, primarily due to the absence of costs associated with theOcean Patriot’s special survey in 2008 and reduced costs for theOcean Bounty, which completed drilling operations offshore Australia in July 2009 and is ready stacked in a shipyard in Malaysia.

     Europe/Africa/Mediterranean.Operating revenue for our intermediate semisubmersibles working in the Europe/Africa/Mediterranean region increased $15.8 million in the first nine months of 2009 compared to the same period in 2008, primarily due to higher dayrates earned by three of our four rigs in the North Sea (both U.K. and Norwegian sectors). Average operating revenue per day for our North Sea semisubmersibles increased from $311,100 in the first nine months of 2008 to $339,500 in the first nine months of 2009, contributing $30.0 million in additional revenue during 2009. Utilization for our North Sea semisubmersibles decreased from 93% during the first nine months of 2008 to 89% for the first nine months of 2009, resulting in a $20.0 million reduction in revenues. TheOcean Guardianis currently in an Invergordon, Scotland shipyard for a survey and contract preparation activities in advance of its upcoming contract in the Falkland Islands.

     TheOcean Lexingtongenerated an additional $5.8 million operating offshore Libya during the first four and one-half months of 2009 and offshore Egypt in mid-May of 2009 compared to operating offshore Egypt the entire first nine months of 2008.

     Contract drilling expense for our intermediate semisubmersible rigs operating in the Europe/Africa/Mediterranean markets decreased $23.7 million in the first nine months of 2009 compared to the first nine months of 2008, primarily due to lower labor and personnel related costs for our rigs operating in the North Sea, including the reversal of a previously recorded reserve for paid time off for our U.K. national employees, and the absence of costs associated with regulatory surveys for theOcean GuardianandOcean Nomadduring the first nine months of 2008. The decrease in operating costs during the first nine months of 2009 was partially offset by an increase in costs associated with the completion of a scheduled survey of theOcean Princessduring the first quarter of 2009.

     South America. Revenues generated by our intermediate semisubmersibles working in the South American region decreased $7.6 million in the first nine months of 2009 compared to the same period in 2008. During the first nine months of 2008, theOcean Workerearned $42.5 million of additional revenues associated with the amortization of deferred mobilization revenue and a higher dayrate while operating offshore Trinidad and Tobago, compared to the same period in 2009 while operating offshore Brazil. However, due to rig moves into the region and subsequent acceptance by the customer, our semisubmersible fleet offshore Brazil logged 87 incremental rig operating days during the first nine months of 2009 compared to the first nine months of 2008, contributing a net $34.9 million in additional revenues during the first nine months of 2009. Including theOcean Worker, we currently have seven intermediate semisubmersible rigs operating offshore Brazil.

     Our seven intermediate semisubmersibles operating offshore Brazil incurred $151.5 million in operating expense during the first nine months of 2009, or a $26.5 million increase in costs compared to the same period in 2008. The increase in costs in the South American region reflect the increase in number of rigs in the region, including higher maintenance and other costs associated with customer acceptance testing and the amortization of costs associated with the mobilization of our rigs into the region. In addition, the increased operating costs reflect higher freight and customs charges that are inherent in operations in the region.

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Jack-Ups.

	Nine Months Ended
	September 30,				Favorable/
	2009		2008		(Unfavorable)
	(In thousands)
JACK-UPS:
CONTRACT DRILLING REVENUE
GOM	$	55,128	$	141,710	$	(86,582	)
Mexico		77,391		78,624		(1,233	)
Australia/Asia/Middle East		100,363		64,337		36,026
Europe/Africa/Mediterranean		72,143		84,444		(12,301	)
South America		55,536		780		54,756
Total Contract Drilling Revenue	$	360,561	$	369,895	$	(9,334	)
CONTRACT DRILLING EXPENSE
GOM	$	60,768	$	72,098	$	11,330
Mexico		26,856		24,957		(1,899	)
Australia/Asia/Middle East		39,272		31,017		(8,255	)
Europe/Africa/Mediterranean		29,231		22,517		(6,714	)
South America		31,583		2,671		(28,912	)
Total Contract Drilling Expense	$	187,710	$	153,260	$	(34,450	)
OPERATING INCOME	$	172,851	$	216,635	$	(43,784	)

     GOM.Revenue generated by our jack-up rigs operating in the GOM decreased $86.6 million during the first nine months of 2009 compared to the first nine months of 2008. Average utilization decreased from 94% during the first nine months of 2008 to 39% during the first nine months of 2009 due to a decrease in demand for rigs in the GOM, resulting in a $61.7 million decrease in revenues. Our jack-up fleet in the GOM had 735 ready- and cold-stacked days during the first nine months of 2009 compared to 22 ready-stacked days during the same period in 2008. As a result of the depressed GOM market, we elected to cold stack and no longer actively market three of our mat-supported jack-ups in this region. In addition, theOcean Tower, which was taken out of service due to damage sustained in a hurricane in the third quarter of 2008, generated revenues of $33.1 million during the first nine months of 2008.

     In contrast, average operating revenue per day in the first nine months of 2009 increased to $85,400 from $78,200 in the first nine months of 2008, resulting in an $8.2 million increase in revenue compared to the same period in 2008.

     Contract drilling expense for our jack-ups operating in the GOM decreased $11.3 million during the first nine months of 2009 compared to the same period in 2008, primarily due to significantly reduced operating costs for theOcean Towerand our three cold-stacked rigs. The decline in operating costs was partially offset by survey and repair costs for theOcean TitanandOcean Summitduring the first nine months of 2009.

     Australia/Asia/Middle East. Revenue generated by our jack-up rigs operating in the Australia/Asia/Middle East region increased $36.0 million in the first nine months of 2009 compared to the same period in 2008, including $46.0 million of additional revenues earned by theOcean Shield,which began operating late in the second quarter of 2008. TheOcean Heritage,which generated $11.8 million in revenues during the first nine months of 2008, completed its contract offshore Qatar during the first quarter of 2008 and was relocated to Egypt in late June 2008.

     Contract drilling expense in the Australia/Asia/Middle East region increased $8.3 million during the first nine months of 2009 compared to the same period in 2008 primarily due to the addition of normal operating costs for theOcean Shieldand costs associated with the survey and shipyard project costs for theOcean Sovereign. The increased costs were partially offset by the absence of operating costs for theOcean Heritageduring the first nine months of 2009.

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     Europe/Africa/Mediterranean. Revenue generated by our jack-up rigs operating in the Europe/Africa/Mediterranean region decreased $12.3 million during the first nine months of 2009 compared to the same period in 2008, primarily due to a $12.5 million reduction in revenues generated by theOcean Spurduring the first nine months of 2009. During the first nine months of 2009, average operating revenue per day for theOcean Spurdecreased to $117,600 from $157,500 during the first nine months of 2008, resulting in a $10.9 million decrease in revenues comparing the periods. However, utilization for theOcean Spurincreased to nearly 100% compared to 88% for the first nine months of 2008 and resulted in the generation of $4.9 million in additional revenues. During the first nine months of 2008, we recognized a $6.5 million lump-sum demobilization fee earned by theOcean Spurupon completion of its initial contract offshore Egypt.

     The $6.7 million increase in operating expense in the region during the first nine months of 2009 compared to the same period in 2008 is primarily attributable to the inclusion of normal operating costs for theOcean Heritage.

     South America. Our newly constructed jack-up rig, theOcean Scepter, began operating offshore Argentina late in the third quarter of 2008, generating $54.8 million in revenues and incurring $28.9 million in contract drilling expense in the first nine months of 2009. TheOcean Scepter completed its contract offshore Argentina in July 2009 and is currently ready stacked in a Uruguay shipyard.

Depreciation.

     Depreciation expense increased $44.8 million to $257.0 million during the first nine months of 2009 compared to $212.2 million during the same period in 2008. The increase in depreciation expense is primarily due to depreciation associated with capital additions in 2008 and 2009, including depreciation of our two newly constructed jack-ups, theOcean ShieldandOcean Scepter, our recently upgraded high specification floater, theOcean Monarchand the recently acquiredOcean Courage.

Casualty Loss.

     During the first nine months of 2008, we wrote off certain equipment of our jack-up rig, theOcean Tower, that was damaged during Hurricane Ike. We wrote off the net book value of theOcean Tower’s derrick, drill floor and related equipment lost in the storm of approximately $2.6 million and accrued $3.7 million in estimated salvage costs for recovery of equipment from the ocean floor.

Interest Income.

     We earned interest income of $3.6 million for the nine months ended September 30, 2009 compared to $10.4 million during the nine months ended September 30, 2008. The $6.7 million decrease in interest income is primarily the result of lower average interest-bearing cash balances during the current year period compared to the nine months ended September 30, 2008.

Interest Expense.

     Interest expense for the nine months ended September 30, 2009 and 2008 relates primarily to interest accrued on our outstanding indebtedness, net of capitalized interest, and our liabilities for uncertain tax positions. During the first nine months of 2009, interest expense included $12.1 million related to our 5.875% Senior Notes issued in May 2009, partially offset by the reversal of $5.5 million previously accrued interest expense related to an uncertain tax position for which the statute of limitations had expired (see “ —Income Tax Expense”).During the first nine months of 2008, we capitalized interest of $14.8 million related to the construction of theOcean ScepterandOcean Shieldand the upgrade of theOcean Monarch, which were all completed in 2008. We have no current rig construction or upgrade projects that qualify for interest capitalization.

Foreign Currency Transaction Gain (Loss).

     Foreign currency transaction gains (losses) include gains and losses from the settlement of foreign currency forward exchange contracts and unrealized gains and losses from mark-to-market accounting for our foreign currency derivatives not designated as accounting hedges. Such gains and losses fluctuate based on the level of transactions in foreign currencies, as well as fluctuations in such currencies. During the first nine months of 2009, we recognized net foreign currency exchange gains of $17.9 million, including $8.8 million in net realized and unrealized gains on foreign currency forward exchange contracts. During the first nine months of 2008, we recognized net foreign currency exchange losses of $14.6 million, including $19.1 million in net unrealized losses

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resulting from mark-to-market accounting on open positions at September 30, 2008, partially offset by $11.2 million net realized gains on settlement of foreign currency derivatives.

Income Tax Expense.

     Our estimated annual effective tax rate for the nine months ended September 30, 2009 was 24.0%, compared to the 29.5% effective tax rate for the same period in 2008. The lower effective tax rate in the current period is a result of differences in the mix of our domestic and international pre-tax earnings and losses, respectively, as well as the mix of international tax jurisdictions in which we operate. Also contributing to the lower effective tax in the current period was a repatriation of earnings by one of our wholly owned foreign subsidiaries, Diamond East Asia Limited, to one of our wholly owned domestic subsidiaries. The repatriation brought with it associated foreign tax credits that were previously unrecognized.

     During the nine months ended September 30, 2009, we reached an agreement with the Internal Revenue Service to settle the audits of the tax years 2004 through 2006 for total additional income tax expense of $55,000. Return to provision adjustments made during the nine months ended September 30, 2009 that were associated with the filing of our 2008 tax returns in various jurisdictions resulted in additional tax expense of $11.0 million.

     On March 31, 2009, the statute of limitations relative to a 2003 uncertain tax position in Mexico expired. As a consequence we reversed $5.5 million of previously accrued interest expense and $5.9 million of previously accrued tax expense, $0.8 million of which had been accrued for penalties. There was no comparable accrual reversal in the nine months ended September 30, 2008.

Sources of Liquidity and Capital Resources

     Our principal sources of liquidity and capital resources are cash flows from our operations and our cash reserves. We may also make use of our $285 million credit facility for cash liquidity. See “–$285 Million Revolving Credit Facility.”

     At September 30, 2009, we had $250.8 million in “Cash and cash equivalents” and $0.9 million in “Investments and marketable securities,” representing our investment of cash available for current operations.

     Cash Flows from Operations.Our cash flows from operations are impacted by the ability of our customers to weather the continuing current global financial and credit crisis, as well as the volatility in energy prices. In general, before working for a customer with whom we have not had a prior business relationship and/or whose financial stability may appear uncertain to us, we perform a credit review on that company. Based on that analysis, we may require that the customer present a letter of credit, prepay or provide other credit enhancements. Tightening of the credit markets may preclude us from doing business with potential customers and could have an impact on our existing customers, causing them to fail to meet their obligations to us, including attempts to renegotiate existing contract terms. In addition, we may offer inducements to our customers to extend existing contracts. For example, we recently reached an agreement with one of our customers in the GOM for a second one-year contract extension. In exchange for the extension, we agreed to a varying dayrate structure which provides for lower dayrates during the four-month period when the rig is restricted from operating during hurricane season, and higher dayrates at other times.

     During the second quarter of 2009, one of our customers sought short-term financial relief with respect to an existing contractual agreement with us for a six-well, one-year minimum contract term, program that began in May 2009. As a result, we agreed to amend our existing contract with this customer, and in consideration of this amendment, we are to receive a $20,000 per day increase in the total contractual operating dayrate, to a total of $560,000 per day, for a minimum of the first 240 days of the initial one-year contract. Under the terms of the amended agreement, the customer is obligated to pay us $75,000 per day in accordance with our normal credit terms (30 days after receipt of invoice). The remainder of the dayrate for the six well program (minimum of 240 days) will be paid through the conveyance of a 27% net profit interest, or NPI, in a minimum of five developmental oil-and-gas producing properties covering six wells owned by the customer. Based on the current production payout estimate, we anticipate that the first payment from the conveyance of the NPI will commence in early 2010. Payment of such amounts, and the timing of such payments, are contingent upon such production and upon energy sale prices. The residual days under the initial one-year (365 day) contract will be deferred until the fourth quarter of 2011 when the customer will utilize the rig at the originally contracted dayrate and provide a 25% up-front escrow payment with the remaining 75% to be paid in accordance with normal credit terms. At September 30, 2009, the portion of our trade receivable that is expected to be paid from the NPI was $55.5 million and is presented as “Accounts Receivable” in our Consolidated Balance Sheets included in Item 1 of Part I of this report.

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     These external factors which affect our cash flows from operations are not within our control and are difficult to predict. For a description of other factors that could affect our cash flows from operations, see “- Overview — Industry Conditions,” “ — Forward-Looking Statements,” and “Risk Factors” in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2008 and Item 1A of Part II, “Risk Factors,” included in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2009.

     5.70% Senior Notes. On October 8, 2009, we issued $500.0 million aggregate principal amount of our 5.70% Senior Notes due 2039, or 5.70% Senior Notes, for general corporate purposes. The 5.70% Senior Notes were issued at an offering price of 99.344% of the principal and resulted in net proceeds to us of approximately $491.9 million, exclusive of accrued issuance costs.

     The notes bear interest at 5.70% per year, payable semiannually in arrears on April 15 and October 15 of each year, beginning April 15, 2010, and mature on October 15, 2039. The 5.70% Senior Notes are unsecured and unsubordinated obligations of Diamond Offshore Drilling, Inc., or DODI, and rank equal in right of payment to existing and future unsecured and unsubordinated indebtedness of DODI. We have the right to redeem all or a portion of these notes for cash at any time or from time to time, on at least 15 days but not more than 60 days prior written notice, at the redemption price specified in the governing indenture plus accrued and unpaid interest to the date of redemption.

     5.875% Senior Notes. On May 4, 2009, we issued $500.0 million aggregate principal amount of our 5.875% Senior Notes, for general corporate purposes. The 5.875% Senior Notes were issued at an offering price of 99.851% of the principal and resulted in net proceeds to us of approximately $495.5 million, exclusive of accrued issuance costs.

     The notes bear interest at 5.875% per year, payable semiannually in arrears on May 1 and November 1 of each year, beginning November 1, 2009, and mature on May 1, 2019. The 5.875% Senior Notes are unsecured and unsubordinated obligations of DODI and rank equal in right of payment to existing and future unsecured and unsubordinated indebtedness of DODI. We have the right to redeem all or a portion of these notes for cash at any time or from time to time, on at least 15 days but not more than 60 days prior written notice, at the redemption price specified in the governing indenture plus accrued and unpaid interest to the date of redemption.

     $285 Million Revolving Credit Facility.We maintain a $285 million syndicated, senior unsecured revolving credit facility, or Credit Facility, for general corporate purposes, including loans and performance or standby letters of credit, that will mature on November 2, 2011.

     Loans under the Credit Facility bear interest at a rate per annum equal to, at our election, either (i) the higher of the prime rate or the federal funds rate plus 0.5% or (ii) the London Interbank Offered Rate, or LIBOR, plus an applicable margin, varying from 0.20% to 0.525%, based on our current credit ratings. Under our Credit Facility, we also pay, based on our current credit ratings, and as applicable, other customary fees, including, but not limited to, a facility fee on the total commitment under the Credit Facility regardless of usage and a utilization fee that applies if the aggregate of all loans outstanding under the Credit Facility equals or exceeds 50% of the total commitment under the facility. Changes in credit ratings could lower or raise the fees that we pay under the Credit Facility.

     The Credit Facility contains customary covenants, including, but not limited to, the maintenance of a ratio of consolidated indebtedness to total capitalization, as defined in the Credit Facility, of not more than 60% at the end of each fiscal quarter and limitations on liens, mergers, consolidations, liquidation and dissolution, changes in lines of business, swap agreements, transactions with affiliates and subsidiary indebtedness.

     Based on our current credit ratings at September 30, 2009, the applicable margin on LIBOR loans would have been 0.24%. As of September 30, 2009, there were no loans outstanding under the Credit Facility; however, $61.5 million in letters of credit were issued and outstanding under the Credit Facility.

     Shelf Registration.We have an effective Registration Statement on Form S-3 registering the future sale of an unlimited amount of our debt and equity securities.

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Liquidity and Capital Requirements

     Our liquidity and capital requirements are primarily a function of our working capital needs, capital expenditures and debt service requirements. We determine the amount of cash required to meet our capital commitments by evaluating the need to upgrade rigs to meet specific customer requirements and by evaluating our ongoing rig equipment replacement and enhancement programs, including water depth and drilling capability upgrades. We believe that our operating cash flows and cash reserves will be sufficient to meet both our working capital requirements and our capital commitments over the next twelve months; however, we will continue to make periodic assessments based on industry conditions and will adjust capital spending programs if required.

     In addition, we may, from time to time, issue debt or equity securities, or a combination thereof, to finance capital expenditures, the acquisition of assets and businesses or for general corporate purposes. Our ability to access the capital markets by issuing debt or equity securities will be dependent on our results of operations, our current financial condition, current market conditions and other factors beyond our control. We may also make use of our Credit Facility to finance capital expenditures or for other general corporate purposes.

     Contractual Cash Obligations.The following table sets forth our contractual cash obligations at September 30, 2009.

	Payments Due By Period
			Less than 1						After 5
Contractual Obligations	Total		year		1 – 3 years		4 – 5 years		years
	(In thousands)
Long-term debt (principal and interest)(1)	$	1,435,357	$	58,545	$	108,875	$	358,875	$	909,062
Operating leases		3,991		2,737		1,152		102		—
Total obligations	$	1,439,348	$	61,282	$	110,027	$	358,977	$	909,062

⁽¹⁾ Excludes $500.0 million in aggregate principal amount of our 5.70% Senior Notes issued on October 8, 2009. See “ –5.70% Senior Notes.”

     The above table excludes foreign currency forward exchange contracts in the aggregate notional amount of $87.5 million outstanding at September 30, 2009. See further information regarding these contracts in Item 3, “Quantitative and Qualitative Disclosures About Market Risk —Foreign Exchange Risk” and Note 4 “Derivative Financial Instruments” to our Consolidated Financial Statements in Item 1 of Part I of this report.

     As of September 30, 2009, the total unrecognized tax benefit related to uncertain tax positions was $35.0 million. Due to the high degree of uncertainty regarding the timing of future cash outflows associated with the liabilities recognized in this balance, we are unable to make reasonably reliable estimates of the period of cash settlement with the respective taxing authorities.

     As of September 30, 2009, we had no purchase obligations for major rig upgrades or any other significant obligations, except for those related to our direct rig operations, which arise during the normal course of business.

     Other Commercial Commitments — Letters of Credit.

     We were contingently liable as of September 30, 2009 in the amount of $164.8 million under certain performance, bid, supersedeas and custom bonds and letters of credit, including $61.5 million in letters of credit issued under our Credit Facility, as described in the table below. Eight of these bonds totaling $103.1 million were purchased from a related party after obtaining competitive quotes. Agreements relating to approximately $95.7 million of performance bonds can require collateral at any time. As of September 30, 2009, we had not been required to make any collateral deposits with respect to these agreements. The remaining agreements cannot require collateral except in events of default. On our behalf, banks have issued letters of credit securing certain of these bonds.

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	For the years ending December 31,
	Total		2009		2010		Beyond
			(In thousands)
Other Commercial Commitments
Customs bonds	$	41,699	$	41,640	$	59	$	—
Performance bonds		109,478		580		90,042		18,856
Other		13,615		5,000		8,615		—
Total obligations	$	164,792	$	47,220	$	98,716	$	18,856

Credit Ratings.

     Our current credit rating is Baa1 for Moody’s Investors Services and A- for Standard & Poor’s. Although our long-term ratings continue at investment grade levels, lower ratings would result in higher rates for borrowings under our Credit Facility and could also result in higher interest rates on future debt issuances.

Capital Expenditures.

     During 2009, we acquired two newbuild, dynamically positioned, semisubmersible drilling rigs for an aggregate cost of $950.0 million, exclusive of final commissioning and initial mobilization costs, drill string and other necessary capital spares. TheOcean Courageis currently en route to the GOM, where it is expected to commence drilling operations in the first quarter of 2010. Our most recent addition to the fleet, theOcean Valor, is currently undergoing final commissioning in Singapore. We are actively marketing theOcean Valorfor work commencing in early 2010.

     We expect to spend approximately $140.0 million during the fourth quarter of 2009 for additional capital expenditures associated with our ongoing rig equipment replacement and enhancement programs, equipment required for our long-term international contracts and other corporate requirements, as well as final commissioning costs and drill string and capital spare purchases for our two newbuild semisubmersibles. During the first nine months of 2009, we spent approximately $309.7 million towards these programs.

     We expect to finance our 2009 capital expenditures through the use of our existing cash balances or internally generated funds. From time to time, however, we may also make use of our Credit Facility to finance capital expenditures.

Off-Balance Sheet Arrangements.

     At September 30, 2009 and December 31, 2008, we had no off-balance sheet debt or other arrangements.

Historical Cash Flows

     The following is a discussion of our historical cash flows from operating, investing and financing activities for the nine months ended September 30, 2009 compared to the nine months ended September 30, 2008.

Net Cash Provided by Operating Activities.

	Nine Months Ended September 30,
	2009			2008			Change
	(In thousands)
Net income	$	1,100,155		$	1,017,204		$	82,951
Net changes in operating assets and liabilities		(333,667	)		(235,278	)		(98,389	)
Proceeds from settlement of foreign currency forward exchange contracts designated as accounting hedges		3,046			—			3,046
(Gain) loss on foreign currency forward exchange contracts		(11,852	)		7,920			(19,772	)
Deferred tax provision		57,984			33,862			24,122
Depreciation and other non-cash items, net		320,766			215,617			105,149
	$	1,136,432		$	1,039,325		$	97,107

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     Our cash flows from operations during the first nine months of 2009 increased $97.1 million or 9% compared to the same period in 2008. The increase in cash flows from operations for the first nine months of 2009 compared to the same period in 2008 is primarily the result of higher dayrates earned by our floater fleet, most notably in the Australia/Asia markets, as well as contributions to earnings by the newly constructedOcean ScepterandOcean Shieldand the recently upgradedOcean Monarch.Deferred income and expenses, primarily related to rig mobilizations and customer prepayments, generated cash of $49.1 million during the first nine months of 2009 compared to a usage of $10.7 million during the same period of 2008.

     We used an additional $98.4 million to satisfy our working capital needs during the first nine months of 2009 compared to the first nine months of 2008. Trade and other receivables used cash of $198.1 million during the first nine months of 2009 compared to $184.3 million during the same period of 2008. We also used $21.0 million more cash during the first nine months of 2009 to satisfy our operating liabilities compared to the same period in 2008. During the first nine months of 2009, we made estimated U.S. federal income tax payments and paid foreign income taxes, net of refunds, of $192.0 million and $143.0 million, respectively. During the first nine months of 2008, we made estimated U.S. federal income tax payments and paid foreign income taxes of $330.0 million and $86.0 million, respectively.

Net Cash Used in Investing Activities.

	Nine Months Ended September 30,
	2009			2008			Change
	(In thousands)
Purchase of marketable securities	$	(3,698,627	)	$	(1,291,271	)	$	(2,407,356	)
Proceeds from sale of marketable securities		4,098,868			1,293,742			2,805,126
Capital expenditures (including rig acquisitions)		(1,259,761	)		(487,662	)		(772,099	)
(Cost of) proceeds from settlement of foreign currency forward exchange contracts not designated as accounting hedges		(28,772	)		11,141			(39,913	)
Other investing activities		7,391			2,802			4,589
	$	(880,901	)	$	(471,248	)	$	(409,653	)

     Our investing activities used $881.0 million during the first nine months of 2009 compared to $471.2 million during the same period of 2008. During the first nine months of 2009, we sold marketable securities, net of purchases, of $400.2 million compared to $2.5 million during the first nine months of 2008. Our level of investment activity is dependent on our working capital and other capital requirements during the year, as well as a response to actual or anticipated events or conditions in the securities markets.

     During the first nine months of 2009, we purchased two newbuild, dynamically positioned, semisubmersible drilling rigs, theOcean ValorandOcean Courage,for an aggregate cost of $950.0 million. In addition, we spent approximately $309.7 million related to ongoing capital maintenance programs, including rig modifications to meet contractual requirements, during the first nine months of 2009. During the first nine months of 2008, we spent approximately $340.8 million related to our capital maintenance programs and an additional $146.9 million related to the major upgrade of theOcean Monarchand construction of theOcean ScepterandOcean Shield.

     During the first nine months of 2009, we received $6.0 million in deposits in connection with the sale of theOcean Tower, which was completed on October 26, 2009.

     Beginning in the latter part of 2008, the strengthening U.S. dollar (or, conversely, the weakening foreign currency) negatively impacted our expiring foreign currency forward exchange contracts entered into as economic hedges of our foreign currency requirements and resulted in an aggregate realized loss of $28.8 million for the first nine months of 2009. During the first nine months of 2008, we recognized $11.1 million in realized gains on the settlement of foreign currency forward exchange contracts. As of September 30, 2009, we had foreign currency exchange contracts outstanding, in the aggregate notional amount of $87.5 million, consisting of $27.6 million in Australian dollars, $18.0 million in Brazilian reais, $22.3 million in British pounds sterling, $7.6 million in Mexican pesos and $12.0 million in Norwegian kroner. These contracts settle at various times through March 2010.

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Net Cash Used in Financing Activities.

	Nine Months Ended September 30,
	2009			2008			Change
	(In thousands)
Issuance of 5.875% Senior Notes, net of issuance costs	$	495,332		$	—		$	495,332
Payment of dividends		(836,621	)		(573,917	)		(262,704	)
Proceeds from stock options exercised		527			2,002			(1,475	)
Other		—			1,319			(1,319	)
	$	(340,762	)	$	(570,596	)	$	229,834

     During the first nine months of 2009, we paid cash dividends totaling $836.6 million, consisting of aggregate quarterly regular cash dividends totaling $52.1 million, or $0.125 per share of our common stock, and aggregate special cash dividends totaling $784.5 million, or $1.875 per share of our common stock per quarter. During the first nine months of 2008, we paid cash dividends totaling $573.9 million, consisting of aggregate quarterly regular cash dividends totaling $52.1 million, or $0.125 per share of our common stock, and aggregate special cash dividends of $1.25 per share of our common stock per quarter, totaling $521.8 million.

     On October 21, 2009, we declared a regular cash dividend and a special cash dividend of $0.125 and $1.875, respectively, per share of our common stock. Both the quarterly regular cash dividend and the special cash dividends are payable on December 1, 2009 to stockholders of record on November 2, 2009.

     Our Board of Directors has adopted a policy to consider paying special cash dividends, in amounts to be determined, on a quarterly basis. Our Board of Directors may, in subsequent quarters, consider paying additional special cash dividends, in amounts to be determined, if it believes that our financial position, earnings, earnings outlook, capital spending plans and other relevant factors warrant such action at that time.

     Depending on market conditions, we may, from time to time, purchase shares of our common stock in the open market or otherwise. We did not repurchase any shares of our outstanding common stock during the nine months ended September 30, 2009 or 2008.

Recent Accounting Pronouncements

     In October 2009, the FASB issued Accounting Standards Update No. 2009-13, Revenue Recognition (Topic 605), Multiple Deliverable Revenue Arrangements, a consensus of the FASB Emerging Issues Task Force, or ASU 2009-13. ASU 2009-13 addresses the accounting for multiple deliverable arrangements to enable vendors to account for products or services (deliverables) separately rather than as a combined unit. ASU 2009-13 changes the guidance provided in the FASB ASC Subtopic 605-25, Revenue Recognition -Multiple-Element Arrangements, or ASC-605-25, to allow the financial reporting of revenue arrangements to reflect the underlying economics of transactions. The amendments to ASC-605-25 will be effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. We are currently evaluating the impact that the adoption of the amendments to ASC-605-25 will have on our results of operations and financial position, as well as the related disclosure requirements.

Forward-Looking Statements

     We or our representatives may, from time to time, make or incorporate by reference certain written or oral statements that are “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. All statements other than statements of historical fact are, or may be deemed to be, forward-looking statements. Forward-looking statements include, without limitation, any statement that may project, indicate or imply future results, events, performance or achievements, and may contain or be identified by the words “expect,” “intend,” “plan,” “predict,” “anticipate,” “estimate,” “believe,” “should,” “could,” “may,” “might,” “will,” “will be,” “will continue,” “will likely result,” “project,” “forecast,” “budget” and similar expressions. Statements made by us in this report that contain forward-looking statements include, but are not limited to, information concerning our possible or assumed future results of operations and statements about the following subjects:

• future market conditions and the effect of such conditions on our future results of operations (see “- Overview — Industry Conditions”);

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• future uses of and requirements for financial resources (see “— Liquidity and Capital Requirements” and “- Sources of Liquidity and Capital Resources”);

• interest rate and foreign exchange risk (see “— Liquidity and Capital Requirements - Credit Ratings” and “Quantitative and Qualitative Disclosures About Market Risk”);

• future contractual obligations (see “— Overview — Industry Conditions” and “- Liquidity and Capital Requirements”);

• market outlook;

• future operations outside the United States including, without limitation, our operations in Mexico;

• business strategy;

• growth opportunities;

• competitive position;

• expected financial position;

• future cash flows (see “ — Overview — Contract Drilling Backlog”);

• future regular or special dividends (see “ — Historical Cash Flows”);

• financing plans (see “ — Sources of Liquidity and Capital Resources” and “ - Liquidity and Capital Requirements”);

• tax planning;

• budgets for capital and other expenditures (see “- Liquidity and Capital Requirements”);

• timing and cost of completion of rig upgrades, new construction and other capital projects (see “- Liquidity and Capital Requirements”);

• delivery dates and drilling contracts related to rig conversion or upgrade projects or rig acquisitions;

• plans and objectives of management;

• performance of contracts;

• outcomes of legal proceedings;

• compliance with applicable laws; and

• adequacy of insurance or indemnification.

     These types of statements inherently are subject to a variety of assumptions, risks and uncertainties that could cause actual results to differ materially from those expected, projected or expressed in forward-looking statements. These risks and uncertainties include, among others, the following:

• general economic and business conditions, including the extent and duration of the current credit crisis and recession;

• worldwide demand for oil and natural gas;

• changes in foreign and domestic oil and gas exploration, development and production activity;

• oil and natural gas price fluctuations and related market expectations;

• the ability of the Organization of Petroleum Exporting Countries, commonly called OPEC, to set and maintain production levels and pricing, and the level of production in non-OPEC countries;

• policies of various governments regarding exploration and development of oil and gas reserves;

• advances in exploration and development technology;

• the worldwide political and military environment, including in oil-producing regions;

• casualty losses;

• operating hazards inherent in drilling for oil and gas offshore;

• the risk of physical damage to rigs and equipment caused by named windstorms in the U.S. Gulf of Mexico;

• industry fleet capacity;

• market conditions in the offshore contract drilling industry, including dayrates and utilization levels;

• competition;

• changes in foreign, political, social and economic conditions;

• risks of international operations, compliance with foreign laws and taxation policies and expropriation or nationalization of equipment and assets;

• risks of potential contractual liabilities pursuant to our various drilling contracts in effect from time to time;

• the risk that an LOI may not result in a definitive agreement;

• foreign exchange and currency fluctuations and regulations, and the inability to repatriate income or capital;

• risks of war, military operations, other armed hostilities, terrorist acts and embargoes;

• changes in offshore drilling technology, which could require significant capital expenditures in order to maintain competitiveness;

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• regulatory initiatives and compliance with governmental regulations;

• compliance with environmental laws and regulations;

• development and exploitation of alternative fuels;

• customer preferences;

• effects of litigation;

• cost, availability and adequacy of insurance;

• the risk that future regular or special dividends may not be declared;

• adequacy of our sources of liquidity;

• the availability of qualified personnel to operate and service our drilling rigs; and

• various other matters, many of which are beyond our control.

     The risks and uncertainties included here are not exhaustive. Other sections of this report and our other filings with the Securities and Exchange Commission include additional factors that could adversely affect our business, results of operations and financial performance. Given these risks and uncertainties, investors should not place undue reliance on forward-looking statements. Forward-looking statements included in this report speak only as of the date of this report. We expressly disclaim any obligation or undertaking to release publicly any updates or revisions to any forward-looking statement to reflect any change in our expectations with regard to the statement or any change in events, conditions or circumstances on which any forward-looking statement is based.

ITEM 3. Quantitative and Qualitative Disclosures About Market Risk.

     The information included in this Item 3 is considered to constitute “forward-looking statements” for purposes of the statutory safe harbor provided in Section 27A of the Securities Act and Section 21E of the Exchange Act. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Forward-Looking Statements” in Item 2 of Part I of this report.

     Our measure of market risk exposure represents an estimate of the change in fair value of our financial instruments. Market risk exposure is presented for each class of financial instrument held by us at September 30, 2009 and December 31, 2008, assuming immediate adverse market movements of the magnitude described below. We believe that the various rates of adverse market movements represent a measure of exposure to loss under hypothetically assumed adverse conditions. The estimated market risk exposure represents the hypothetical loss to future earnings and does not represent the maximum possible loss or any expected actual loss, even under adverse conditions, because actual adverse fluctuations would likely differ. In addition, since our investment portfolio is subject to change based on our portfolio management strategy as well as in response to changes in the market, these estimates are not necessarily indicative of the actual results that may occur.

     Exposure to market risk is managed and monitored by our senior management. Senior management approves the overall investment strategy that we employ and has responsibility to ensure that the investment positions are consistent with that strategy and the level of risk acceptable to us. We may manage risk by buying or selling instruments or entering into offsetting positions.

Interest Rate Risk

     We have exposure to interest rate risk arising from changes in the level or volatility of interest rates. Our investments in marketable securities are primarily in fixed maturity securities. We monitor our sensitivity to interest rate risk by evaluating the change in the value of our financial assets and liabilities due to fluctuations in interest rates. The evaluation is performed by applying an instantaneous change in interest rates by varying magnitudes on a static balance sheet to determine the effect such a change in rates would have on the recorded market value of our investments and the resulting effect on stockholders’ equity. The analysis presents the sensitivity of the market value of our financial instruments to selected changes in market rates and prices which we believe are reasonably possible over a one-year period.

     The sensitivity analysis estimates the change in the market value of our interest sensitive assets and liabilities that were held on September 30, 2009 and December 31, 2008, due to instantaneous parallel shifts in the yield curve of 100 basis points, with all other variables held constant.

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     The interest rates on certain types of assets and liabilities may fluctuate in advance of changes in market interest rates, while interest rates on other types may lag behind changes in market rates. Accordingly, the analysis may not be indicative of, is not intended to provide, and does not provide a precise forecast of the effect of changes in market interest rates on our earnings or stockholders’ equity. Further, the computations do not contemplate any actions we could undertake in response to changes in interest rates.

     Loans under our $285 million syndicated, senior unsecured revolving Credit Facility bear interest at our option at a rate per annum equal to (i) the higher of the prime rate or the federal funds rate plus 0.5% or (ii) LIBOR plus an applicable margin, varying from 0.20% to 0.525%, based on our current credit ratings. As of September 30, 2009 and December 31, 2008, there were no loans outstanding under the Credit Facility (however, $61.5 million and $58.1 million in letters of credit were issued and outstanding under the Credit Facility at September 30, 2009 and December 31, 2008, respectively).

     Our long-term debt, as of September 30, 2009 and December 31, 2008, is denominated in U.S. dollars. Our debt has been primarily issued at fixed rates, and as such, interest expense would not be impacted by interest rate shifts. The impact of a 100-basis point increase in interest rates on fixed rate debt would result in a decrease in market value of $60.2 million and $20.9 million as of September 30, 2009 and December 31, 2008, respectively. A 100-basis point decrease would result in an increase in market value of $60.5 million and $21.6 million as of September 30, 2009 and December 31, 2008, respectively.

Foreign Exchange Risk

     Foreign exchange rate risk arises from the possibility that changes in foreign currency exchange rates will impact the value of financial instruments. It is customary for us to enter into foreign currency forward exchange contracts in the normal course of business. These contracts may require us to exchange predetermined amounts of foreign currencies on specified dates or to net settle the spread between the contracted foreign currency exchange rate and the spot rate on the contract settlement date, which for certain contracts is the average spot rate for the contract period. As of September 30, 2009, we had foreign currency exchange contracts outstanding, in the aggregate notional amount of $87.5 million, consisting of $27.6 million in Australian dollars, $18.0 million in Brazilian reais, $22.3 million in British pounds sterling, $7.6 million in Mexican pesos and $12.0 million in Norwegian kroner. These contracts settle at various times through March 2010.

     At September 30, 2009, we have presented the fair value of our outstanding foreign currency forward exchange contracts as a current asset of $6.2 million in “Prepaid expenses and other current assets” and a current liability of $0.2 million in “Accrued liabilities” in our Consolidated Balance Sheets.

     The following table presents our exposure to market risk by category (interest rates and foreign currency exchange rates):

	Fair Value Asset (Liability)						Market Risk
	September 30,			December 31,			September 30,			December 31,
	2009			2008			2009			2008
				(In thousands)
Interest rate:
Marketable securities	$	880	(a)	$	400,592	(a)	$	(100	) (c)	$	(2,000	) (c)
Long-term debt		(1,054,980	) (b)		(470,040	) (b)		—			—
Foreign Exchange:
Forward exchange contracts — asset positions		6,200	(d)		—			(8,100	) (e)		—
Forward exchange contracts — liability positions		(200	) (d)		(37,300	) (d)		(3,200	) (e)		(32,600	) (e)

(a)

The fair market value of our investment in marketable securities, excluding repurchase agreements, is based on the quoted closing market prices on September 30, 2009 and December 31, 2008.

(b)

The fair values of our 4.875% Senior Notes due 2015 and 5.15% Senior Notes due 2014 are based on the quoted closing market prices on September 30, 2009 and December 31, 2008 from brokers of these instruments. The fair value of our Zero Coupon Convertible Debentures due 2020 is based on the closing market price of our common stock on September 30, 2009 and December 31, 2008 and the stated conversion rate for the debentures. The fair value of our 5.875% Senior Notes due 2019 is based on the quoted market price on September 30, 2009 from brokers of this instrument.

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(c)	The calculation of estimated market risk exposure is based on assumed adverse changes in the underlying reference price or index of an increase in interest rates of 100 basis points at September 30, 2009 and December 31, 2008.
(d)	The fair value of our foreign currency forward exchange contracts is based on both quoted market prices and valuations derived from pricing models on September 30, 2009 and December 31, 2008.
(e)	The calculation of estimated foreign exchange risk assumes an instantaneous 20% decrease in the foreign currency exchange rates versus the U.S. dollar from their values at September 30, 2009 and December 31, 2008, with all other variables held constant.

ITEM 4. Controls and Procedures.

     We maintain a system of disclosure controls and procedures which are designed to ensure that information required to be disclosed by us in reports that we file or submit under the federal securities laws, including this report, is recorded, processed, summarized and reported on a timely basis. These disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed by us under the federal securities laws is accumulated and communicated to our management on a timely basis to allow decisions regarding required disclosure.

     Our Chief Executive Officer, or CEO, and Chief Financial Officer, or CFO, participated in an evaluation by our management of the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) as of September 30, 2009. Based on their participation in that evaluation, our CEO and CFO concluded that our disclosure controls and procedures were effective as of September 30, 2009.

     There were no changes in our internal control over financial reporting identified in connection with the foregoing evaluation that occurred during our third fiscal quarter of 2009 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 6. Exhibits.

     See the Exhibit Index for a list of those exhibits filed or furnished herewith.

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SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	DIAMOND OFFSHORE DRILLING, INC.                             (Registrant)
Date October 27, 2009	By:	\s\ Gary T. Krenek
		Gary T. Krenek
		Senior Vice President and Chief Financial Officer
Date October 27, 2009		\s\ Beth G. Gordon
		Beth G. Gordon Controller (Chief Accounting Officer)

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EXHIBIT INDEX

Exhibit No.		Description
	3.1	Amended and Restated Certificate of Incorporation of Diamond Offshore Drilling, Inc. (incorporated by reference to Exhibit 3.1 to our Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2003) (SEC File No. 1-13926).
	3.2	Amended and Restated By-Laws (as amended through October 22, 2007) of Diamond Offshore Drilling, Inc. (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed October 26, 2007).
	4.1	Indenture, dated as of February 4, 1997, between Diamond Offshore Drilling, Inc. and The Bank of New York Mellon (formerly known as The Bank of New York) (as successor under the Base Indenture to The Chase Manhattan Bank), as Trustee (incorporated by reference to Exhibit 4.1 to our Annual Report on Form 10-K for the fiscal year ended December 31, 2001) (SEC File No. 1-13926).
	4.2	Seventh Supplemental Indenture, dated as of October 8, 2009, between Diamond Offsore Drilling, Inc. and The Bank of New York Mellon, as Trustee (incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K filed October 8, 2009.
	31.1*	Rule 13a-14(a) Certification of the Chief Executive Officer.
	31.2*	Rule 13a-14(a) Certification of the Chief Financial Officer.
	32.1*	Section 1350 Certification of the Chief Executive Officer and Chief Financial Officer.
101.INS**		XBRL Instance Document.
101.SCH**		XBRL Taxonomy Extension Schema Document.
101.CAL**		XBRL Taxonomy Calculation Linkbase Document
101.LAB**		XBRL Label Linkbase Document.
101.PRE**		XBRL Presentation Linkbase Document.
101.DEF**		XBRL Taxonomy Extension Definition.

*	Filed or furnished herewith.
**	The documents formatted in XBRL (Extensible Business Reporting Language) and attached as Exhibit 101 to this report are deemed not filed or part of a registration statement or prospectus for purposes of sections 11 or 12 of the Securities Act, are deemed not filed for purposes of section 18 of the Exchange Act, and otherwise, not subject to liability under these sections.

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