Bronco Drilling 8-K/A Completion of Acquisition or Disposition of Assets

Exhibit 99.3

UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS

The following are our unaudited pro forma combined balance sheet as of September 30, 2006 and our unaudited pro forma combined statements of operations for the nine months ended September 30, 2006 and year ended December 31, 2005. The unaudited pro forma combined statements have been prepared under the assumptions set forth in the accompanying notes to the unaudited pro forma combined financial statements, and give effect to the acquisition of Eagle Well Service, Inc. as if consummated on December 31, 2005 for the pro forma combined balance sheet and for the pro forma combined statements of operations as if consummated at January 1, 2005, using the purchase method. The Company is in the process of gathering additional information to finalize the fair value of assets acquired and the purchase price allocation is subject to change. The unaudited pro forma combined financial statements do not purport to represent what the results of operations would have been if such transactions had occurred on January 1, 2005.

-1-

BRONCO DRILLING COMPANY, INC.
UNAUDITED PRO FORMA COMBINED BALANCE SHEET
SEPTEMBER 30, 2006
(in thousands)
	Historical		Historical
	Bronco Drilling		Eagle Well		Pro Forma				Pro Forma
	Company,Inc.		Service, Inc.		Adjustments				Combined
ASSETS
Current assets:
Cash and cash equivalents	$	3,309	$	907	$	-			$	4,216
Trade receivables		58,650		2,726		-				61,376
Contract Drilling in Progress		2,814		-		-				2,814
Current deferred income taxes		126		-		-				126
Prepaid expenses and other		1,371		171		-				1,542
Total current assets		66,270		3,804		-				70,074
Property and equipment, at cost		393,526		13,095		8,305		(A)		421,948
						7,022		(C)
Less accumulated depreciation
and amortization		35,655		2,879		(2,879	)	(B)		35,655
Net property and equipment		357,871		10,216		18,206				386,293
Intangible assets, net
and other		3,465		-		780		(A)		4,463
						218		(C)
Goodwill		21,280		-		-				21,280
Restricted cash		2,231		-		-				2,231
Total assets	$	451,117	$	14,020	$	19,204			$	484,341
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	16,388	$	273	$	-			$	16,661
Accrued liabilities		9,526		59		-				9,585
Income tax payable		5,748		760		-				6,508
Current maturities of long-term debt		440		3,240		-				3,680
Total current liabilities		32,102		4,332		-				36,434
Non-current liabilities:
Long-term debt		63,880		2,260		2,500		(A)		68,640
Deferred income taxes		32,200		1,767		7,240		(C)		41,207
Total liabilities		128,182		8,359		9,740				146,281
Equity:
Common Stock		250		82		(82	)	(B)		261
						11		(A)
Paid in capital		278,657		-		15,114		(A)		293,771
Stockholders' Equity		44,028		5,579		(5,579	)	(B)		44,028
Total liabilities and stockholders' equity	$	451,117	$	14,020	$	19,204			$	484,341
See accompanying notes to the unaudited pro forma financial statements.

-2-

BRONCO DRILLING COMPANY, INC.
UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
FOR THE NINE MONTHS ENDED SEPTEMBER, 2006
(Amounts in thousands, except per share amounts)
	Historical			Historical
	Bronco Drilling			Eagle Well			Pro Forma				Pro Forma
	Company, Inc.			Service, Inc.			Adjustments				Combined
Contract drilling revenues	$	203,351		$	15,756		$	-			$	219,107
Expenses:
Contract drilling		99,481			9,538			-				109,019
Depreciation and amortization		21,119			921			1,497		(D)		23,537
General and administrative		11,741			2,822			-				14,563
Total operating costs and expenses		132,341			13,281			1,497				147,119
Income from operations		71,010			2,475			(1,497	)			71,988
Other income (expense):
Interest expense		(647	)		(351	)		(138	)	(E)		(1,136	)
Interest income		123			13			-				136
Gain on sale of asset		-			2,435			-				2,435
Other		185			16			-				201
Loss from early extinguishment of debt		(1,000	)		-			-				(1,000	)
Total other income (expense)		(1,339	)		2,113			(138	)			636
Income from continuing
operations and before
income taxes		69,671			4,588			(1,635	)			72,624
Income tax expense		26,190			1,439			(326	)	(F)		27,303
Net Income	$	43,481		$	3,149		$	(1,309	)		$	45,321
Pro forma income per common share - Basic(G)		1.78										1.77
Pro forma income per common share - Diluted(G)		1.77										1.77
Weighted average pro forma shares outstanding - Basic(G)		24,467										25,537
Weighted average pro forma shares outstanding - Diluted(G)		24,505										25,575
See accompanying notes to the unaudited pro forma financial statements.

-3-

BRONCO DRILLING COMPANY, INC.
UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
FOR THE TWELVE MONTHS ENDED DECEMBER 31, 2005
(Amounts in thousands, except per share amounts)
	Historical			Historical
	Bronco Drilling			Eagle Well			Pro Forma				Pro Forma
	Company, Inc.			Service, Inc.			Adjustments				Combined
Contract drilling revenues	$	77,885		$	15,694		$	-			$	93,579
Expenses:
Contract drilling		44,695			9,923			-				54,618
Depreciation and amortization		9,143			927			2,297		(D)		12,367
General and administrative		9,395			2,197			-				11,592
Total operating costs and expenses		63,233			13,047			2,297				78,577
Income from operations		14,652			2,647			(2,297	)			15,002
Other income (expense):
Interest expense		(1,415	)		(72	)		(184	)	(E)		(1,671	)
Interest income		432			-			-				432
Other		53			(76	)		-				(23	)
Loss from early extinguishment of debt		(2,062	)		-			-				(2,062	)
Total other income (expense)		(2,992	)		(148	)		(184	)			(3,324	)
Income from continuing
operations and before
income taxes		11,660			2,499			(2,481	)			11,678
Income tax expense		6,529			146			(139	)	(F)		6,536
Net Income	$	5,131		$	2,353		$	(2,342	)		$	5,142
Pro forma income per common share - Basic(G)		0.32										0.30
Pro forma income per common share - Diluted(G)		0.31										0.30
Weighted average pro forma shares outstanding - Basic(G)		16,259										17,329
Weighted average pro forma shares outstanding - Diluted(G)		16,306										17,376
See accompanying notes to the unaudited pro forma financial statements.

-4-

Bronco Drilling Company, Inc.

Notes to Unaudited Pro Forma Combined Financial Statements

($ amounts in thousands)

The accompanying unaudited pro forma combined financial statements combine the operations of Bronco Drilling Company, Inc. (the “Company”) and Eagle Well Service, Inc. (“Eagle”). The unaudited pro forma combined financial statements include a pro forma combined balance sheet as of September 30, 2006 and pro forma combined statements of operations for the nine months ended September 30, 2006 and year ended December 31, 2005. The following notes reflect adjustments to our pro forma balance sheet to record the allocation of our purchase price to the assets acquired as if the transaction occurred December 31, 2005. The purchase price has been allocated based on the fair value of the assets acquired. The adjustments are based upon currently available information and estimates; therefore, the actual adjustments may differ from the pro forma adjustments when asset appraisals are completed. Assets included in the purchase were cash, accounts receivable, prepaid expenses and 31 workover rigs. Liabilities assumed in the acquisition were accounts payable, accrued liabilities, debt and income taxes payable. The notes also include adjustments to the combined pro forma statements of operations for the nine months ended September 30, 2006 and year ended December 31, 2005, which assumes that the acquisition had occurred January 1, 2005.

A. The allocated purchase price of $33,224 included the issuance of 1,070,390 shares of our common stock with a fair value of $15,125, cash payment of $2,500, and the assumption of debt of $5,500, liabilities of $2,859, and additional deferred income taxes of $7,240. A $2,500 loan from Fortis Capital Corp., as administrative agent, lead arranger and sole bookrunner, and a syndicate of lenders, which include the Royal Bank of Scotland plc, The CIT Group/Business Credit, Inc., Calyon Corporate and Investment Bank, Merrill Lynch Capital, Comerica Bank and Caterpillar Financial Services Corporation funded the cash payment. The revolving credit facility bears interest on the outstanding principal balance at LIBOR plus a margin that can range from 2.0% to 3.0% or, at our option, the prime rate plus a margin that can range from 1.0% to 2.0%, depending on the ratio of our outstanding senior debt to “Adjusted EBITDA” as defined in the agreement. Any outstanding principal and accrued but unpaid interest will be immediately due and payable in full on January 13, 2009. The purchase price has been allocated to cash of $907, accounts receivable of $2,726, prepaids and other of $171, property and equipment totaling $28,422, and customer lists of $998.

B. To remove historical accumulated depreciation and the capital accounts of Eagle.

C. To record a deferred tax liability due to the difference in the tax basis and book basis of the acquired property and equipment and customer lists.

D. To reflect the increase in depreciation and amortization expense resulting from the purchase price allocation to property and equipment in service and customer service lists depreciated on a straight line basis over 3 to 15 years.

E. To reflect the increase in interest expense resulting from the issuance of debt of $8,000 at 7.35% to finance a portion of the purchase price of Eagle.

F. To reflect the income tax effect of the operations of Eagle at the Federal statutory tax rate of 34% and effective state tax rate of 3.7% (net of Federal income tax effects).

G. Pro forma income (loss) per basic and diluted common share is computed based on the weighted average pro forma number of basic and diluted shares outstanding during the period.

-5-