Evaluation of gas bearing coal seams

Conference · Mon Jan 01 04:00:00 EST 1979 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5798123

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

The methane gas associated with both minable and unminable coal seams represents a sizable resource. Approximately 19.8 TM/sup 3/ (700 tcf to 800 tcf) of gas is locked in these seams, of which an estimated 8.5 TM/sup 3/ (300 tcf) is believed to be contained in minable bituminous coal beds. No universally accepted estimate exists for the recoverable portion. To delineate the coal-bed resource it is necessary to acquire, analyze, and evaluate coal-bed methane data from various candidate seams located in the Illinois basin, Piceance Basin, Arkoma Basin, Rocky Mountains, and other coal-bearing regions. Several diagnostic techniques have been successfully employed to evaluate potential coal-bed gas reservoirs. These techniques are borehole geophysical logging, conventional coring, sidewall coring, and drill-steam testing. Recent advances in computerized analysis of logging measurements provide reliable information for coal seam evaluation. This coordinated evaluation program has yielded significant information on the characterization of these coal beds and their gas content. 10 references.

• OSTI ID: 5798123
• Report Number(s): CONF-790913-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-8359
• Country of Publication: United States
• Language: English

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