Evaluation of gas-bearing coal seams

Journal Article · Thu Jan 01 04:00:00 EST 1981 · J. Pet. Technol.; (United States)

DOI:https://doi.org/10.2118/8359-PA· OSTI ID:5770023

Rieke, III, H H; Rightmire, C T; Fertl, W H

In acquiring coalbed-methane data in the Illinois, Piceance, Arkoma, and Green River basins, geologists are successfully using well logging, conventional coring, sidewall coring, and drillstem testing to evaluate the gas resource. The technical approach aims at establishing for each coalbed the petrophysical, chemical, fluid-saturation fracture-development, fracture-orientation, pressure, temperature, and lithological characteristics. Of a total of 80 wells to be evaluated, 32 have been drilled and tested. The data presented from four of these wells demonstrate coal-seam thicknesses of 0.5-16 ft, core-sample gas contents of 0.26-10.6 cm/sup 3/, gas-in-place ranging from 200 million to 6.6 billion CF per 640 acres, and discounted-gas deliverabilities of 990 million to 65 billion CF.

• Research Organization: TRW Inc.
• OSTI ID: 5770023
• Journal Information: J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 33; ISSN JPTJA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000 -- Coal
Lignite
& Peat-- Mining
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKANES
COAL DEPOSITS
COAL SEAMS
DRILLING
EVALUATION
GEOLOGIC DEPOSITS
HYDROCARBONS
METHANE
MINERAL RESOURCES
ORGANIC COMPOUNDS
RECOVERY
RESERVES
RESOURCES
WELL DRILLING