Exhibit 99.2
Sanchez Energy Corporation
Unaudited Pro Forma Combined Financial Information
On March 18, 2013, Sanchez Energy Corporation (together with its consolidated subsidiaries, the “Company,” “we,” “our,” “us” or similar terms) executed a definitive agreement to purchase assets in the Eagle Ford Shale in South Texas from Hess Corporation (“Hess”) for approximately $256 million in cash, subject to customary adjustments (the “Hess acquisition”). On May 31, 2013, the Company completed the Hess acquisition for an aggregate adjusted purchase price of $281.6 million. The effective date of the transaction was March 1, 2013.
The purchase price was funded with borrowings under the Company’s First Lien Credit Agreement, which was subsequently replaced using proceeds from a June 13, 2013 offering of the Company’s 7.75% senior notes, cash on hand, and proceeds from the Company’s private placement of the Series B Convertible Preferred Stock. The preliminary purchase price allocation for the Hess acquisition has been finalized except for the settlement of certain post-closing adjustments with the seller. The total purchase price was allocated to the assets purchased and liabilities assumed in the Hess acquisition based upon fair values on the date of acquisition.
On September 9, 2013, the Company executed a definitive agreement to purchase assets in the Eagle Ford Shale in South Texas from Rock Oil Company, LLC (“Rock Oil”) for approximately $220 million in cash, subject to customary adjustments (the “Wycross acquisition”). The closing of this transaction was completed on October 4, 2013 for an aggregate adjusted purchase price of $230.1 million, subject to customary post-closing adjustments to be determined. The effective date of this acquisition is July 1, 2013. The purchase price was funded with proceeds from the Company’s issuance of $200 million of 7.75% senior notes due 2021 with the remainder from the issuance of shares of common stock.
On September 18, 2013, the Company issued an additional $200 million in aggregate principal amount of its 7.75% senior notes due 2021 (the “Additional Notes”) in a private offering to eligible purchasers at a price to the purchasers of 96.5% of the principal amount of the Additional Notes. The Company received net proceeds from this offering of approximately $188.8 million, after deducting the initial purchasers’ discounts and estimated offering expenses of approximately $4.2 million. The Additional Notes were issued under the same indenture as the original senior notes issuance of $400 million on June 13, 2013, and are therefore treated as a single class of debt securities under the indenture.
Also, on September 18, 2013, the Company completed a public offering of 11,040,000 shares of common stock, at an issue price of $23.00 per share. The Company received net proceeds from this offering of approximately $241.5 million, after deducting underwriters’ fees and offering expenses of approximately $12.4 million. Approximately $41.3 million was used to fund the purchase of the Wycross acquisition.
The following unaudited pro forma combined financial information is based on the historical consolidated financial statements of the Company adjusted to reflect the Wycross and Hess acquisitions. The Company’s historical consolidated balance as of September 30, 2013 has been adjusted to include the pro forma effect of the Wycross acquisition as presented in Note 2 to the unaudited pro forma combined financial information. The Company’s historical consolidated statements of operations for the year ended December 31, 2012 and the nine months ended September 30, 2013 have also been adjusted to give pro forma effect to the Wycross and Hess acquisitions as presented in Note 3 to the unaudited pro forma combined financial information.
The unaudited pro forma combined financial statements give effect to the events set forth below:
· The Hess acquisition completed May 31, 2013.
· The Wycross acquisition completed October 4, 2013.
· The issuance of senior notes to refinance the borrowings under the First Lien Credit Agreement to finance a portion of the Hess acquisition, and the related adjustments to interest expense.
· The borrowing of $200 million in aggregate principal under our 7.750% senior notes due 2021 to finance a portion of the Wycross acquisition, and the related adjustments to interest expense.
· Issuance of Series B Convertible Preferred Stock to finance a portion of the Hess acquisition and related adjustments to preferred dividends.
· Issuance of approximately 1,800,000 common shares to finance a portion of the Wycross acquisition.
The Hess acquisition is reflected in the Company’s historical consolidated balance sheet as of September 30, 2013. The unaudited pro forma combined balance sheet gives effect to the Wycross acquisition as if it occurred on September 30, 2013. The unaudited pro forma combined statements of operations combine the results of operations of the Company for the year ended December 31, 2012 and the nine months ended September
Sanchez Energy Corporation
Unaudited Pro Forma Combined Financial Information
30, 2013 with the accounts of the properties acquired in the Wycross and Hess acquisitions, as if the Hess and Wycross acquisitions, including the issuance of the Senior Notes, issuance of approximately 1.8 million common shares, issuance of senior notes to refinance borrowings under the First Lien Credit Agreement, and issuance of Series B Convertible Preferred Stock, had occurred on January 1, 2012.
The unaudited pro forma combined financial information should be read in conjunction with the Company’s Form 10-K for the year ended December 31, 2012 and the Company’s Form 10-Q for the quarter ended September 30, 2013.
The unaudited pro forma combined financial information is for informational purposes only and is not intended to represent or to be indicative of the combined results of operations or financial position that the Company would have reported had the Hess and Wycross acquisitions been completed as of the dates set forth in this unaudited pro forma combined financial information and should not be taken as indicative of the Company’s future combined results of operations or financial position. The actual results may differ significantly from that reflected in the unaudited pro forma combined financial information for a number of reasons, including, but not limited to, differences in assumptions used to prepare the unaudited pro forma combined financial information and actual results.
Unaudited Pro Forma Combined
Balance Sheet as of September 30, 2013
(in thousands)
| | | | Wycross | | Pro Forma | | Sanchez | |
| | Sanchez | | Acquisition | | Adjustments | | Pro Forma | |
| | Historical | | (Note 2) | | (Note 2) | | Combined | |
ASSETS | | | | | | | | | |
Current assets: | | | | | | | | | |
Cash and cash equivalents | | $ | 479,999 | | $ | (219,067 | )(a) | $ | (379 | )(b) | $ | 260,553 | |
Investments | | | 10,000 | | — | | — | | 10,000 | |
Oil and natural gas receivables | | 40,017 | | — | | — | | 40,017 | |
Fair value of derivative instruments | | 40 | | — | | — | | 40 | |
Deferred tax asset | | 7,520 | | — | | — | | 7,520 | |
Other current assets | | 739 | | 3,038 | (a) | — | | 3,777 | |
Total current assets | | 538,315 | | (216,029 | ) | (379 | ) | 321,907 | |
Oil and natural gas properties, at cost, using the full cost method: | | | | | | | | | |
Unproved oil and natural gas properties | | 268,556 | | 2,094 | (a) | — | | 270,650 | |
Proved oil and natural gas properties | | 868,284 | | 213,645 | (a) | — | | 1,081,929 | |
Total oil and natural gas properties | | 1,136,840 | | 215,739 | | — | | 1,352,579 | |
Less: Accumulated depreciation, depletion, amortization and impairment | | (98,729 | ) | — | | — | | (98,729 | ) |
Total oil and natural gas properties, net | | 1,038,111 | | 215,739 | | — | | 1,253,850 | |
Other assets: | | | | | | | | | |
Debt issuance costs | | 19,869 | | | | 301 | (b) | 20,170 | |
Fair value of derivative instruments | | 423 | | — | | — | | 423 | |
Other assets | | 2,575 | | 561 | (a) | — | | 3,136 | |
Total assets | | $ | 1,599,293 | | $ | 271 | | $ | (78 | ) | $ | 1,599,486 | |
| | | | | | | | | |
LIABILITIES AND STOCKHOLDERS’ EQUITY | | | | | | | | | |
Current liabilities: | | | | | | | | | |
Accounts payable | | $ | 26,779 | | $ | — | | $ | | | $ | 26,779 | |
Accounts payable - related entities | | 782 | | — | | | | 782 | |
Accrued liabilities and other payables | | 113,057 | | 113 | (a) | | | 113,170 | |
Dividends payable | | 5,485 | | — | | | | 5,485 | |
Fair value of derivative instruments | | 7,033 | | — | | | | 7,033 | |
Total current liabilities | | 153,136 | | 113 | | — | | 153,249 | |
Long term debt | | 593,032 | | — | | | | 593,032 | |
Deferred tax liability | | 3,852 | | | | | | 3,852 | |
Other non-current liabilities | | 478 | | | | | | 478 | |
Asset retirement obligations | | 3,507 | | 158 | (a) | | | 3,665 | |
Total liabilities | | 754,005 | | 271 | | — | | 754,276 | |
Commitments and contingencies | | | | | | | | | |
Stockholders’ equity: | | | | | | | | | |
Preferred stock | | 75 | | — | | | | 75 | |
Common stock | | 464 | | — | | | | 464 | |
Additional paid-in capital | | 863,805 | | — | | (78 | )(b) | 863,727 | |
Accumulated (deficit) retained earnings | | (19,056 | ) | — | | | | (19,056 | ) |
Total stockholders’ equity | | 845,288 | | — | | (78 | ) | 845,210 | |
Total liabilities and stockholders’ equity | | $ | 1,599,293 | | $ | 271 | | $ | (78 | ) | $ | 1,599,486 | |
Unaudited Pro Forma Combined
Statement of Operations
For the Nine Months Ended September 30, 2013
| | | | | | | | Hess | | Wycross | | | | | |
| | | | Hess | | Wycross | | Pro Forma | | Pro Forma | | Pro Forma | | Sanchez | |
| | Sanchez | | Acquisition | | Acquisition | | Adjustments | | Adjustments | | Adjustments | | Pro Forma | |
| | Historical | | (Note 3) | | (Note 3) | | (Note 3) | | (Note 3) | | (Note 3) | | Combined | |
| | (in thousands, except per share amounts) | |
REVENUES: | | | | | | | | | | | | | | | |
Oil sales | | $ | 171,635 | | $ | 50,181 | | $ | 35,420 | | $ | — | | $ | — | | $ | — | | $ | 257,236 | |
Natural gas liquids sales | | 6,166 | | 1,855 | | 564 | | — | | — | | — | | 8,585 | |
Natural gas sales | | 6,520 | | 1,569 | | 370 | | — | | — | | — | | 8,459 | |
Total revenues | | 184,321 | | 53,605 | (a) | 36,354 | (a) | — | | — | | — | | 274,280 | |
COSTS AND EXPENSES: | | | | | | | | | | | | | | | |
Oil and natural gas production expenses | | 21,098 | | 23,942 | (b) | 2,278 | (b) | — | | — | | — | | 47,318 | |
Production and ad valorem taxes | | 10,942 | | 2,749 | (c) | 1,683 | (c) | — | | — | | — | | 15,374 | |
Depreciation, depletion, amortization and accretion | | 76,368 | | — | | — | | — | | — | | 32,984 | (d) | 109,352 | |
General and administrative | | 35,564 | | — | | — | | — | | — | | — | | 35,564 | |
Total operating costs and expenses | | 143,972 | | 26,691 | | 3,961 | | — | | — | | 32,984 | | 207,608 | |
Operating income | | 40,349 | | 26,914 | | 32,393 | | — | | — | | (32,984 | ) | 66,672 | |
Other income (expense): | | | | | | | | | | | | | | | |
Interest and other income | | 104 | | — | | — | | — | | — | | — | | 104 | |
Interest expense | | (17,613 | ) | — | | — | | (4,168 | )(e) | (12,187 | )(g) | — | | (33,968 | ) |
Realized and unrealized losses on derivatives | | (13,812 | ) | — | | — | | — | | — | | — | | (13,812 | ) |
Income before income taxes | | 9,028 | | 26,914 | | 32,393 | | (4,168 | ) | (12,187 | ) | (32,984 | ) | 18,996 | |
Income tax benefit | | 3,668 | | — | | — | | — | | — | | (3,489 | )(h) | 179 | |
Net income | | 12,696 | | 26,914 | | 32,393 | | (4,168 | ) | (12,187 | ) | (36,473 | ) | 19,175 | |
Less: | | | | | | | | | | | | | | | |
Preferred stock dividends | | (13,041 | ) | — | | — | | (3,413 | )(f) | — | | — | | (16,454 | ) |
Net income allocable to participating securities | | — | | — | | — | | — | | — | | (118 | )(i) | (118 | ) |
Net income (loss) attributable to common stockholders | | $ | (345 | ) | $ | 26,914 | | $ | 32,393 | | $ | (7,581 | ) | $ | (12,187 | ) | $ | (36,591 | ) | $ | 2,603 | |
| | | | | | | | | | | | | | | |
Net income (loss) per common share - basic and diluted | | $ | (0.01 | ) | | | | | | | | | | | $ | 0.07 | |
| | | | | | | | | | | | | | | |
Weighted average number of shares used to calculate net income (loss) attributable to common stockholders - basic and diluted | | 33,651 | | | | | | | | | | 1,718 | (j) | 35,369 | |
Unaudited Pro Forma Combined
Statement of Operations
For the Year Ended December 31, 2012
| | | | Hess | | Wycross | | Hess Pro Forma | | Wycross Pro Forma | | Pro Forma | | Sanchez | |
| | Sanchez Historical | | Acquisition (Note 3) | | Acquisition (Note 3) | | Adjustments (Note 3) | | Adjustments (Note 3) | | Adjustments (Note 3) | | Pro Forma Combined | |
| | (in thousands, except per share amounts) | |
REVENUES: | | | | | | | | | | | | | | | |
Oil sales | | $ | 42,377 | | $ | 96,855 | | $ | 7,249 | | $ | — | | $ | — | | $ | — | | $ | 146,481 | |
Natural gas liquids sales | | 15 | | 3,091 | | 113 | | — | | — | | — | | 3,219 | |
Natural gas sales | | 766 | | 2,024 | | 75 | | — | | — | | — | | 2,865 | |
Total revenues | | 43,158 | | 101,970 | (a) | 7,437 | (a) | — | | — | | — | | 152,565 | |
COSTS AND EXPENSES: | | | | | | | | | | | | | | | |
Oil and natural gas production expenses | | 3,401 | | 50,743 | (b) | 904 | (b) | — | | — | | — | | 55,048 | |
Production and ad valorem taxes | | 2,124 | | 5,397 | (c) | 343 | (c) | — | | — | | — | | 7,864 | |
Depreciation, depletion, amortization and accretion | | 15,922 | | — | | — | | | | | | 41,707 | (d) | 57,629 | |
General and administrative | | 37,239 | | — | | — | | — | | — | | — | | 37,239 | |
Total operating costs and expenses | | 58,686 | | 56,140 | | 1,247 | | | | | | 41,707 | | 157,780 | |
Operating income (loss) | | (15,528 | ) | 45,830 | | 6,190 | | | | | | (41,707 | ) | (5,215 | ) |
Other income (expense): | | | | | | | | | | | | | | | |
Interest and other income | | 74 | | — | | — | | — | | — | | — | | 74 | |
Interest expense | | (99 | ) | — | | — | | (7,754 | )(e) | (16,889 | )(g) | — | | (24,742 | ) |
Realized and unrealized losses on derivatives | | (742 | ) | — | | — | | — | | — | | — | | (742 | ) |
Net loss | | (16,295 | ) | 45,830 | | 6,190 | | (7,754 | ) | (16,889 | ) | (41,707 | ) | (30,625 | ) |
Less: | | | | | | | | | | | | | | | |
Preferred stock dividends | | (2,112 | ) | — | | — | | (14,626 | )(f) | — | | — | | (16,738 | ) |
Net loss attributable to common stockholders | | $ | (18,407 | ) | $ | 45,830 | | $ | 6,190 | | $ | (22,380 | ) | $ | (16,889 | ) | $ | (41,707 | ) | $ | (47,363 | ) |
| | | | | | | | | | | | | | | |
Net loss per common share - basic and diluted | | $ | (0.56 | ) | | | | | | | | | | | $ | (1.31 | ) |
| | | | | | | | | | | | | | | |
Weighted average number of shares used to calculate net loss attributable to common stockholders - basic and diluted | | 33,000 | | | | | | | | | | 1,796 | (j) | 34,796 | |
Notes to Unaudited Pro Forma
Combined Financial Information
Note 1. Basis of Presentation
On May 31, 2013, the Company completed the Hess acquisition for an aggregate adjusted purchase price of $281.6 million. The effective date of the transaction was March 1, 2013.
The purchase price was funded with borrowings under the Company’s First Lien Credit Agreement, cash on hand, and proceeds from the Company’s private placement of the Series B Convertible Preferred Stock. The preliminary purchase price allocation for the Cotulla acquisition has been finalized except for the settlement of certain post-closing adjustments with the seller. The total purchase price was allocated to the assets purchased and liabilities assumed in the Cotulla acquisition based upon fair values on the date of acquisition.
On September 9, 2013, the Company executed a definitive agreement to purchase assets in the Eagle Ford Shale in South Texas from Rock Oil Company, LLC (“Rock Oil”) for approximately $220 million in cash, subject to certain post-closing adjustments (the “Wycross acquisition”). The closing of this transaction was completed on October 4, 2013 for an aggregate adjusted purchase price of $230.1 million, subject to post-closing adjustments to be determined. The effective date of this acquisition is July 1, 2013. The purchase price was funded with proceeds from the Company’s issuance of $200 million of 7.75% senior notes due 2021 and the issuance of shares of common stock.
On September 18, 2013, the Company issued an additional $200 million in aggregate principal amount of its 7.75% senior notes due 2021 (the “Additional Notes”) in a private offering to eligible purchasers at a price to the purchasers of 96.5% of the principal amount of Additional Notes. The Company received net proceeds from this offering of approximately $188.8 million, after deducting the initial purchasers’ discounts and estimated offering expenses of approximately $4.2 million. The Company also received cash for accrued interest from June 13, 2013 through the date of issuance of $4.1 million. The Additional Notes were issued under the same indenture as the original senior notes issuance of $400 million on June 13, 2013, and are therefore treated as a single class of debt securities under the indenture.
On September 18, 2013, the Company completed a public offering of 11,040,000 shares of common stock, at an issue price of $23.00 per share. The Company received net proceeds from this offering of approximately $241.5 million, after deducting underwriters’ fees and offering expenses of approximately $12.4 million. Approximately $41.3 million was used to fund the purchase of the Wycross acquisition.
The Hess acquisition is reflected in the Company’s historical consolidated balance sheet as of September 30, 2013. The accompanying unaudited pro forma combined balance sheet as of September 30, 2013 has been prepared to give effect to the Wycross acquisition as if it occurred on September 30, 2013 and the unaudited pro forma combined statements of operations have been prepared to give effect to the Hess and Wycross acquisitions, including the First Lien Credit Agreement and Senior Notes borrowings and the issuance of common shares discussed above, as if they had occurred on January 1, 2012.
The unaudited pro forma combined financial statements and underlying pro forma adjustments are based upon currently available information and certain estimates and assumptions made by the Company’s management; therefore, actual results could differ materially from the pro forma information. However, management believes the assumptions provide a reasonable basis for presenting the significant effect of the Hess and Wycross acquisitions. The Company believes the pro forma adjustments give appropriate effect to those assumptions and are properly applied in the pro forma information.
Note 2. Unaudited Pro Forma Combined Balance Sheet
Adjustments (a) – (b) to the unaudited pro forma combined balance sheet as of September 30, 2013 are to reflect the Company’s Wycross acquisition, completed on October 4, 2013, as follows:
(a) To record the acquisition of certain unproved and proved oil and natural gas properties and asset retirement obligation ($0.2 million liability) associated with the oil and natural gas properties acquired.
(b) To record additional costs incurred for the issuance of the Additional Notes and the equity issued used to finance the Wycross acquisition.
Including the $11.0 million deposit previously paid and included in oil and natural gas properties as of September 30, 2013, total cash consideration for the Wycross Acquisition was $230.1 million, which includes the $220.0 million purchase price and $10.1 million in normal and customary closing adjustments. The measurement of the fair value at acquisition date of the assets acquired as compared to the fair value of consideration transferred, adjusted for purchase price adjustments is calculated in the following table (in thousands):
Notes to Unaudited Pro Forma
Combined Financial Information
Fair Value of assets and liabilities acquired: | | | |
Oil and natural gas properties | | $ | 226,740 | |
Other current assets | | 3,038 | |
Inventory | | 561 | |
Other current liabilities | | (113 | ) |
Asset retirement obligation | | (158 | ) |
Total fair value of assets and liabilities acquired | | $ | 230,068 | |
Note 3. Unaudited Pro Forma Combined Statement of Operations
The unaudited pro forma combined statements of operations for the nine months ended September 30, 2013 and the year ended December 31, 2012 include adjustments to reflect the following:
(a) Represents the increase in oil, natural gas liquids and natural gas sales resulting from the Hess and Wycross acquisitions completed during 2013.
(b) Represents the increase in oil and natural gas production expenses resulting from the Hess and Wycross acquisitions completed during 2013.
(c) Represents the increase in production taxes resulting from the Hess and Wycross acquisitions completed during 2013.
(d) Represents the increase in depreciation, depletion, amortization and accretion resulting from the Hess and Wycross acquisitions completed during 2013.
(e) Represents the pro forma interest expense and amortization of debt issuance costs related to borrowings under the Company’s First Lien Credit Agreement to fund a portion of the Hess Acquisition during 2013, calculating interest expense using 7.75% associated with the senior notes due 2021 as the senior notes replaced the First Lien Credit Agreement.
(f) Represents the pro forma preferred stock dividends related to the Series B Convertible Preferred Stock, proceeds of which were used to fund a portion of the Hess acquisition completed during 2013.
(g) Represents the pro forma interest expense, amortization of debt issuance costs, and accretion of debt discount related to the issuance of the $200 million 7.75% senior notes due 2021 to fund a portion of the Wycross acquisition completed during 2013.
(h) Represents the incremental income tax expense related to the pro forma effects of combining the Company’s operations with the operations acquired in the Hess and Wycross acquisitions.
(i) Represents the pro forma loss allocated to participating restricted stock.
(j) Represents the pro forma weighted average shares outstanding, including 1.8 million shares of common stock issued to finance a portion of the Wycross acquisition.
Summary Pro Forma Combined
Oil, Natural Gas Liquids and Natural Gas
Reserve Data
The following tables set forth summary pro forma information with respect to the Company’s and the Hess and Wycross acquisitions’ pro forma combined estimated net proved, proved developed and proved undeveloped oil, natural gas liquids and natural gas reserves as of and for the year ended December 31, 2012. This pro forma information gives effect to the Hess and Wycross acquisitions as if they had occurred on January 1, 2012. Future exploration, exploitation and development expenditures, as well as future commodity prices and services costs, will affect the reserve volumes attributable to the acquired properties and the standardized measure of discounted future net cash flows.
Estimated quantities of oil, natural gas liquids and natural gas reserves as of December 31, 2012:
Summary Pro Forma Combined
Oil, Natural Gas Liquids and Natural Gas
Reserve Data
| | Sanchez Historical | |
| | Oil (mbo) | | Natural Gas Liquids (mbbl) | | Natural Gas (mmcf) | | mboe | |
Balance as of December 31, 2011 | | 5,610 | | — | | 6,418 | | 6,680 | |
Revisions of previous estimates | | 1,022 | | 1 | | (245 | ) | 981 | |
Extensions and discoveries | | 12,052 | | 310 | | 9,916 | | 14,015 | |
Purchase of reserves in place | | — | | — | | — | | — | |
Production | | (418 | ) | (1 | ) | (301 | ) | (469 | ) |
Balance as of December 31, 2012 | | 18,266 | | 310 | | 15,788 | | 21,207 | |
| | | | | | | | | |
As of December 31, 2012 | | | | | | | | | |
Proved developed reserves | | 3,211 | | 99 | | 2,433 | | 3,716 | |
Proved undeveloped reserves | | 15,055 | | 211 | | 13,355 | | 17,491 | |
| | Hess Acquisition | |
| | Oil (mbo) | | Natural Gas Liquids (mbbl) | | Natural Gas (mmcf) | | mboe | |
Balance as of December 31, 2011 | | 10,574 | | 1,996 | | 19,861 | | 15,879 | |
Production | | (945 | ) | (142 | ) | (1,044 | ) | (1,261 | ) |
Balance as of December 31, 2012 | | 9,629 | | 1,854 | | 18,817 | | 14,618 | |
| | | | | | | | | |
As of December 31, 2012 | | | | | | | | | |
Proved developed reserves | | 4,546 | | 916 | | 11,002 | | 7,295 | |
Proved undeveloped reserves | | 5,083 | | 938 | | 7,815 | | 7,323 | |
| | Wycross Acquisition | |
| | Oil (mbo) | | Natural Gas Liquids (mbbl) | | Natural Gas (mmcf) | | mboe | |
Balance as of December 31, 2011 | | — | | — | | — | | — | |
Extensions and discoveries | | 9,020 | | 901 | | 6,593 | | 11,019 | |
Production | | (70 | ) | (4 | ) | (30 | ) | (78 | ) |
Balance as of December 31, 2012 | | 8,950 | | 897 | | 6,563 | | 10,941 | |
| | | | | | | | | |
As of December 31, 2012 | | | | | | | | | |
Proved developed reserves | | 1,877 | | 205 | | 1,479 | | 2,328 | |
Proved undeveloped reserves | | 7,073 | | 692 | | 5,084 | | 8,613 | |
| | Sanchez Pro Forma Combined | |
| | Oil (mbo) | | Natural Gas Liquids (mbbl) | | Natural Gas (mmcf) | | mboe | |
Balance as of December 31, 2011 | | 16,184 | | 1,996 | | 26,279 | | 22,559 | |
Revisions of previous estimates | | 1,022 | | 1 | | (245 | ) | 981 | |
Extensions and discoveries | | 21,072 | | 1,211 | | 16,509 | | 25,034 | |
Purchase of reserves in place | | — | | — | | — | | — | |
Production | | (1,433 | ) | (147 | ) | (1,375 | ) | (1,808 | ) |
Balance as of December 31, 2012 | | 36,845 | | 3,061 | | 41,168 | | 46,766 | |
| | | | | | | | | |
As of December 31, 2012 | | | | | | | | | |
Proved developed reserves | | 9,634 | | 1,220 | | 14,914 | | 13,339 | |
Proved undeveloped reserves | | 27,211 | | 1,841 | | 26,254 | | 33,427 | |
Summary Pro Forma Combined
Oil, Natural Gas Liquids and Natural Gas
Reserve Data
The standardized measure of discounted future net cash flows relating to the combined proved oil, natural gas liquids and natural gas reserves at December 31, 2012 is as follows (in thousands):
| | | | | | | | Sanchez | |
| | Sanchez | | Hess | | Wycross | | Pro Forma | |
Standardized Measure | | Historical | | Acquisition | | Acquisition | | Combined | |
| | | | | | | | | |
Future cash inflows | | $ | 1,917,692 | | $ | 1,070,505 | | $ | 961,331 | | $ | 3,949,528 | |
Future production costs | | (431,347 | ) | (331,885 | ) | (254,281 | ) | (1,017,513 | ) |
Future development costs | | (604,543 | ) | (176,356 | ) | (193,050 | ) | (973,949 | ) |
Future income taxes | | (181,117 | ) | (181,257 | ) | (179,900 | ) | (542,274 | ) |
Discount to present value at 10% annual rate | | (414,385 | ) | (174,455 | ) | (150,991 | ) | (739,831 | ) |
Standardized measure of discounted future net cash flows | | $ | 286,300 | | $ | 206,552 | | $ | 183,109 | | $ | 675,961 | |
For the December 31, 2012 calculations in the preceding table, estimated future cash inflows from estimated future production of proved reserves were computed for oil and condensate using an unweighted twelve month West Texas Intermediate posted price of $94.71 and $102.04, respectively, for the Sanchez historical and the Hess and Wycross acquisitions. For NGLs, the average price was based on an unweighted twelve month Mt. Belvieu posted price of $43.24 and $29.25, respectively, for the Sanchez historical and the Hess and Wycross acquisitions. For natural gas the average price was based on an unweighted twelve month Henry Hub spot natural gas price average of $2.76 and $3.19, respectively for the Sanchez historical and the Hess and Wycross acquisitions.
The following are the principal sources of change in the combined standardized measure of discounted future net cash flows (in thousands):
| | | | | | | | Sanchez | |
| | Sanchez | | Hess | | Wycross | | Pro Forma | |
Summary of Changes | | Historical | | Acquisition | | Acquisition | | Combined | |
| | | | | | | | | |
Balance, beginning of period | | $ | 133,158 | | $ | 216,928 | | $ | — | | $ | 350,086 | |
| | | | | | | | | |
Changes in prices and costs | | 30,869 | | — | | — | | 30,869 | |
Revisions of previous quantity estimates | | 39,589 | | — | | — | | 39,589 | |
Extensions and discoveries | | 192,075 | | — | | 289,544 | | 481,619 | |
Sales of oil and gas - net of production costs | | (37,633 | ) | (45,830 | ) | (6,190 | ) | (89,653 | ) |
Net change in income taxes | | (66,109 | ) | 6,656 | | (100,288 | ) | (159,741 | ) |
Changes in development costs | | 8,946 | | — | | — | | 8,946 | |
Accretion of discount | | 13,316 | | 21,693 | | — | | 35,009 | |
Other - net | | (27,911 | ) | 7,105 | | 43 | | (20,763 | ) |
Net change | | 153,142 | | (10,376 | ) | 183,109 | | 325,875 | |
| | | | | | | | | |
Balance, end of period | | $ | 286,300 | | $ | 206,552 | | $ | 183,109 | | $ | 675,961 | |