Geological characterization of Texas oil reservoirs. Final report

Technical Report · Tue Aug 31 04:00:00 EDT 1982

OSTI ID:5533988

Galloway, W E; Garrett, Jr, C M; Tyler, N; Ewing, T E; Posey, J S

This report documents the results of the first year of a two-year examination of the geologic and engineering attributes of the major oil-producing reservoirs of Texas. The goals of year one of this program include: (1) Collect, collate, and synthesize geologic, engineering, and production data on major Texas oil reservoirs. Reservoirs that have produced more than 10 million barrels of oil were included in the initial data base. (2) Develop geologically related familes of reservoirs, called plays. A hydrocarbon play is a group of geologically related fields having basically the same source-reservoir-trap controls. Primary groupings are by similar reservoir genetic facies. Further subdivision is usually by trap type. (3) Using data from files of the Texas Railroad Commission and other public sources, characterize each defined oil play in terms of: (a) recoverable reserves, (b) volume of in-place oil, (c) petrophysical properties of the reservoir, (d) trapping mechanism, (e) fluid properties, (f) drive mechanism, (g) reservoir management practices and conventional well spacing, and (h) calculated oil recovery efficiency. (4) Select those plays which, because of their large volume of in-place oil, low recovery efficiencies, and favorable reservoir and fluid properties, are primary coandidates for more detailed geologic and engineering analysis. Such candidate plays are the targets for significant improvement of ultimate production. (5) Evaluate comparative recovery efficiency as a function of well spacing. (6) Accomplish a preliminary examination of the utility of generic reservoir facies models in prediction of reservoir compartmentalization and heterogeneity, and thus as predictors of reservoir performance. 8 figures, 4 tables.

• Research Organization: Texas Univ., Austin (USA). Bureau of Economic Geology
• OSTI ID: 5533988
• Report Number(s): TENRAC/EDF-087; ON: DE84900417
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
020300 -- Petroleum-- Drilling & Production
DATA
DATA ACQUISITION
DATA COMPILATION
ENGINEERING
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGY
INFORMATION
MINERAL RESOURCES
NORTH AMERICA
NUMERICAL DATA
OIL WELLS
PETROLEUM DEPOSITS
PETROLEUM GEOLOGY
PRODUCTION
RESERVOIR ENGINEERING
RESOURCE ASSESSMENT
RESOURCES
STRATIGRAPHY
TEXAS
USA
WELL SPACING
WELLS