Attached files
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| EX-21.1 - EXHIBIT 21.1 - NBL Texas, LLC | ex21_1.htm |
| EX-23.2 - EXHIBIT 23.2 - NBL Texas, LLC | ex23_2.htm |
| EX-23.1 - EXHIBIT 23.1 - NBL Texas, LLC | ex23_1.htm |
| EX-31.2 - EXHIBIT 31.2 - NBL Texas, LLC | ex31_2.htm |
| EX-31.1 - EXHIBIT 31.1 - NBL Texas, LLC | ex31_1.htm |
| EX-32.1 - EXHIBIT 32.1 - NBL Texas, LLC | ex32_1.htm |
| EX-10.9 - EXHIBIT 10.9 - NBL Texas, LLC | ex10_9.htm |
| EX-10.48 - EXHIBIT 10.48 - NBL Texas, LLC | ex10_48.htm |
| EX-10.49 - EXHIBIT 10.49 - NBL Texas, LLC | ex10_49.htm |
| 10-K - ROSETTA RESOURCES INC 10-K 12-31-2010 - NBL Texas, LLC | form10k.htm |
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Chairman & CEO
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Executive Committee
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C.H. (Scott) Rees III
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P. Scott Frost - Dallas
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President & COO
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J. Carter Henson. Jr - Houston
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Danny D. Simmons
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Dan Paul Smith - Dallas
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WORLDWIDE PETROLEUM CONSULTANTS
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Executive VP
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Joseph J. Spellman - Dallas
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ENGINEERING • GEOLOGY • GEOPHYSICS • PETROPHYSICS
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G. Lance Binder
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Thomas J. Tella II - Dallas
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January 7. 2011
Mr. Randy L Limbacher
Rosetta Resources Inc.
717 Texas. Suite 2800
Houston. Texas 77002
Dear Mr. Limbacher:
In accordance with your request, we have audited the estimates prepared by Rosetta Resources Inc. (Rosetta). as of December 31, 2010, of the proved reserves to the Rosetta interest in certain oil and gas properties located in the United States. It is our understanding that the proved reserves estimates shown herein constitute all of the proved reserves owned by Rosetta. Economic analysis was performed by Rosetta only to confirm economic producibility and determine economic limits for the properties, using the price and cost parameters discussed in subsequent paragraphs of this letter. We have examined the estimates with respect to reserves quantities, reserves categorization, and future producing rates, using the definitions set forth in U.S. Securities and Exchange Commission (SEC) Regulation S-X Rule 4-10(a). The estimates of reserves have been prepared in accordance with the definitions and guidelines of the SEC and conform to the FASB Accounting Standards Codification Topic 932, Extractive Activities—Oil and Gas. We completed our audit on January 7, 2011. This report has been prepared for Rosetta's use in filing with the SEC; in our opinion the assumptions, data, methods, and procedures used in the preparation of this report are appropriate for such purpose.
The following table sets forth Rosetta's estimates of the net reserves, as of December 31, 2010, for the audited properties:
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Net Reserves
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Category
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Oil (Barrels;
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NGL Barrels
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Gas (MCF)
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Proved Developed Producing
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3,685,442 | 6.471,391 | 178,274,219 | |||||||||
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Proved Developed Non-Producing
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1,219 | 0 | 5,680,127 | |||||||||
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Proved Undeveloped
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8.714.218 | 12,854,873 | 104,973.023 | |||||||||
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Total Proved
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12,400.880 | 19.326,266 | 288.927.375 | |||||||||
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Totals may not add because of rounding.
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The oil reserves shown include crude oil and condensate. Oil and natural gas liquids (NGL) volumes are expressed in barrels that are equivalent to 42 United States gallons. Gas volumes are expressed in thousands of cubic feet (MCF) at standard temperature and pressure bases.
When compared on a field-by-field basis, some of the estimates of Rosetta are greater and some are less than the estimates of Netherland, Sewell & Associates. Inc. (NSAI). However, in our opinion the estimates of Rosetta's proved reserves shown herein are. in the aggregate, reasonable and have been prepared in accordance with the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers (SPE Standards). Additionally, these estimates are within the recommended 10 percent tolerance threshold set forth in the SPE Standards. We are satisfied with the methods and procedures used by Rosetta in preparing the December 31, 2010. estimates of reserves, and we saw nothing of an unusual nature that would cause us to take exception with the estimates, in the aggregate, as prepared by Rosetta.
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4500 Thanksgiving Tower • 1601 Elm Street-Dallas. Texas 75201-4754 • Ph 214-969-5401 • Fax. 214-969-5411
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nsai@nsai-petro.com
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1221 Lamar Street. Suite 1200 • Houston, Texas 77010-3072 • Ph 713-654-4950 • Fax: 713-654-4951
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netheriandsewell.com
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The estimates shown herein are for proved reserves. Rosetta's estimates do not include probable or possible reserves that may exist for these properties. Reserves categorization conveys the relative degree of certainty: reserves subcategorization is based on development and production status. The estimates of reserves included herein have not been adjusted for risk.
Oil. NGL. and gas prices were used only to confirm economic producibility and determine economic limits for the properties. Prices used by Rosetta are based on the 12-month unweighted arithmetic average of the first-day-of-the-month price for each month in the period January through December 2010. For oil and NGL volumes, the average West Texas Intermediate posted price of $75.96 per barrel is adjusted by lease for quality, transportation fees, and regional price differentials. For gas volumes, the average Henry Hub spot price of $4.376 per MMBTU is adjusted by lease for energy content, transportation fees, and regional price differentials. All prices are held constant throughout the lives of the properties. The average adjusted product prices weighted by production over the remaining lives of the properties are $75.13 per barrel of oil. $41.80 per barrel of NGL. and $4,323 per MCF of gas.
Operating costs and capital costs were used only to confirm economic producibility and determine economic limits for the properties. Lease and well operating costs used by Rosetta are based on historical operating expense records. For nonoperated properties, these costs include the per-well overhead expenses allowed under joint operating agreements along with estimates of costs to be incurred at and below the district and field levels. Lease and well operating costs for the operated properties are limited to direct lease- and field-level costs and Rosetta's estimate of the portion of its headquarters general and administrative overhead expenses necessary to operate the properties. Lease and well operating costs are held constant throughout the lives of the properties. Rosetta's estimates of capital costs are included as required for workovers, new development wells, production equipment, and abandonment. The future capital costs are held constant to the date of expenditure.
The reserves shown in this report are estimates only and should not be construed as exact quantities. Proved reserves are those quantities of oil and gas which, by analysts of engineering and geoscience data, can be estimated with reasonable certainty to be economically producible. Estimates of reserves may increase or decrease as a result of market conditions, future operations, changes in regulations, or actual reservoir performance. In addition to the primary economic assumptions discussed herein, estimates of Rosetta and NSAI are based on certain assumptions including, but not limited to. that the properties will be developed consistent with current development plans, that the properties will be operated in a prudent manner, that no governmental regulations or controls will be put in place that would impact the ability of Rosetta to recover the reserves, and that Rosetta's projections of future production will prove consistent with actual performance. If the reserves are recovered, the revenues therefrom and the costs related thereto could be more or less than the estimated amounts used to confirm economic producibility and determine economic limits for the properties. Because of governmental policies and uncertainties of supply and demand, the sales rates, prices received for the reserves, and costs incurred in recovering such reserves may vary from assumptions made while preparing these estimates.
It should be understood that our audit does not constitute a complete reserves study of the audited oil and gas properties. Our audit consisted primarily of substantive testing, wherein we conducted a detailed review of major properties making up 92 percent of the present worth for the total proved reserves. In the conduct of our audit, we have not independently verified the accuracy and completeness of information and data furnished by Rosetta with respect to ownership interests, oil and gas production, well test data, historical costs of operation and development, product prices, or any agreements relating to current and future operations of the properties and sales of production. However, if in the course of our examination something came to our attention that brought into question the validity or sufficiency of any such information or data, we did not rely on such information or data until we had satisfactorily resolved our questions relating thereto or had independently verified such information or data. Our audit did not include a review of Rosetta's overall reserves management processes and practices.
We used standard engineering and geoscience methods, or a combination of methods, such as performance analysis, volumetric analysis, and analogy, that we considered to be appropriate and necessary to establish the conclusions set forth herein. As in all aspects of oil and gas evaluation, there are uncertainties inherent in the interpretation of engineering and geoscience data; therefore, our conclusions necessarily represent only informed professional judgment.
Supporting data documenting this audit, along with data provided by Rosetta. are on file in our office. The technical persons responsible for conducting this audit meet the requirements regarding qualifications, independence, objectivity, and confidentiality set forth in the SPE Standards. We are independent petroleum engineers, geologists, geophysicists. and petrophysicists; we do not own an interest in these properties nor are we employed on a contingent basis.
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Sincerely,
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NETHERLAND, SEWELL & ASSOCIATES, INC.
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Texas Registered Engineering Firm F-002699
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/s/ C.H. (Scott) Rees III
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By:
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C.H. (Scott) Rees III, P.E.
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Chairman and Chief Executive Officer
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/s/ Danny D. Simmons
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/s/ David E. Nice
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By:
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By:
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Danny D. Simmons. P.E. 45270
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David E. Nice, P.G. 346
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President and Chief Operating Officer
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Vice President
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Date Signed: January 7, 2011
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Date Signed: January 7. 2011
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WKB:MSS
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Please be advised that the digital document you are viewing is provided by Netherland, Sewell & Associates, Inc. (NSAI) as a convenience to our clients. The digital document is intended to be substantively the same as the original signed document maintained by NSAI. The digital document is subject to the parameters, limitations, and conditions stated in the original document. In the event of any differences between the digital document and the original document, the original document shall control and supersede the digital document.
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