Horizontal well coalbed methane production relative to face cleat orientation
Conference
·
OSTI ID:6189574
Certain coals are structurally blocky and have well defined cleat systems. Based on experiences in underground mines which produce such coal, it has been noticed that more gas enters the mine when the entries are being developed perpendicular to the coal face cleats. Some research publications have extended this concept and concluded that horizontal wells drilled into the Pittsburgh Seam (a blocky coal) would be more productive if they are oriented perpendicular to the face cleat. The conclusions of those publications are not borne out by careful review of the data. 7 refs., 9 figs., 2 tabs.
- Research Organization:
- Northwest Fuel Development, Inc., Portland, OR (USA)
- DOE Contract Number:
- AC02-88ER80601
- OSTI ID:
- 6189574
- Report Number(s):
- CONF-890411-1; ON: DE89008749
- Country of Publication:
- United States
- Language:
- English
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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
CORRELATIONS
FLUID FLOW
GAS FLOW
GEOLOGIC DEPOSITS
HYDROCARBONS
METHANE
MINERAL RESOURCES
NATURAL GAS WELLS
ORGANIC COMPOUNDS
ORIENTATION
RESOURCES
WELLS
012000 -- Coal
Lignite
& Peat-- Mining
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKANES
COAL DEPOSITS
COAL SEAMS
CORRELATIONS
FLUID FLOW
GAS FLOW
GEOLOGIC DEPOSITS
HYDROCARBONS
METHANE
MINERAL RESOURCES
NATURAL GAS WELLS
ORGANIC COMPOUNDS
ORIENTATION
RESOURCES
WELLS