Development of petrophysical techniques for evaluating tight-gas sands. Annual technical report, March 1986-February 1987

Technical Report · Sun Mar 01 04:00:00 EST 1987

OSTI ID:5990924

Howard, W E; Hunt, E R

Formation-evaluation techniques based on the integration of wireline logging surveys and core analysis were developed to establish volumetrics and mechanical properties of potential hydrocarbon-bearing reservoirs in the Travis Peak-Hosston formation of northeast Texas and north Louisiana. Objectives of the program include the establishment of a disc-stored data base of wireline logs, core-analysis data, and measured stress-test data; the quantitative evaluation of all wells in the data base for petrophysical properties utilizing methodologies learned during the study; the identification of zones of naturally high in-situ permeability; and the determination of mechanical properties of the rock and surrounding formations for massive hydraulic design. Results of these efforts were documented and compare favorably with production and core data. Two different methods identified for porosity analysis. An algebraic model based on the simultaneous solution of four different equations has been used to describe lithology. Comparisons of the dual-water model and Waxman-Smits method indicate general agreement in the higher-porosity sands. A relationship between fracture closure pressure and acoustic log response has been identified. All of these efforts have resulted in an Integrated Log Analysis System capable of providing the user with detailed information on the prediction of gas-productive intervals and the mechanical properties necessary to optimally stimulate these reservoirs.

• Research Organization: ResTech Houston, Inc., TX (USA)
• OSTI ID: 5990924
• Report Number(s): PB-87-218905/XAB
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
COLORADO
COMMINUTION
ENGINEERING
EVALUATION
FEDERAL REGION VI
FEDERAL REGION VIII
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
MECHANICAL PROPERTIES
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
RESERVOIR ENGINEERING
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
TEXAS
USA
WELL LOGGING