Gas Reserve Estimation of Offshore Producible Shut-in Leases in the Gulf of Mexico A Report (1976) / Chapter Skim
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PROCEDURE OF PANEL
PROCEDURE OF PANEL
Pages 12-22
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From page 12... ...
The workup of each lease was presented by FPC and USGS staff, and the Panel had available for its reference, in coded form, all maps, work sheets, well logs, etc., contained in the file for each lease. Third, the Panel conducted a detailed comparative analysis of the three independent gas estimates derived by the two consulting firms and the FPC for each of 19 leases included in the 33-lease representative sample.
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From page 13... ...
of the 168 shut-in leases in question. The leases where the consulting firms had extensive previous knowledge of the reservoir(s)
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From page 14... ...
14 TABLE 1 Location of representative sample shut-in leases Lease Location Number of Blocks TEXAS Brazos Area 2 Galveston 1 High Island 2 LOUISIANA East Cameron 4 Eugene Island 5 Grand Isle 3 Main Pass 4 Ship Shoal 3 South Marsh Island 3 South Timbalier 2 Vermilion 2 West Cameron 2
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Reservoirs Percent No. Leases Percent No.
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From page 17... ...
, the sample of 33 leases, chosen to have a reservoir distribution comparable to that in the whole population of shut-in leases, formed 19.6 percent of the total population of 168 leases and was estimated to contain 16.3 percent of the reservoirs, 17.4 percent of the wells drilled, and, according to FPC estimates, 18.3 percent of the gas "reserves." It is, therefore, a reasonably representative sample. SELECTION OF CONSULTANTS TO DEVELOP INDEPENDENT ESTIMATES In order to evaluate the gas "reserve" estimates presented in the FPC report, the Panel concurred with opinion expressed by the BMR and CNR that it would be commensurate with the Panel's responsibility to select and obtain the services of two professional petroleum engineering consulting firms to provide independent gas "reserve" estimates for the representative sample of leases to be examined.
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O o> > c/> oo o o CM fN CO CM S3SV3~| dO 'QiJ
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From page 19... ...
19 TABLE 3 Shut-in leases Sample Percent Sample Analysis "Reserves" (FPC) Leases Reservoirs Wells MMcf 168 514 745 7,992,904 33 84*
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2. Determine, using normal industry practices, the "physically producible" gas in each reservoir on each of approximately •'•Leases so identified by the consulting firms were not included in the representative sample of leases selected by the Panel for study.
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From page 21... ...
All data that were available to the study conducted by the Federal Power Commission and the USGS will be available to the Subcontractor. These data will include copies of all logs obtained from each well, all available core data, drill stem tests, pressure data, and other test data from each well on each lease included in the study.
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From page 22... ...
No data in the files of the USGS may be removed from their premises. The Subcontractor may remove worksheets of information collected from an examination of the data providing the worksheets do not contain lease designation or other directly identifying characteristics.
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