Analysis of Devonian shale stratigraphic, production, and completion data in West Virginia. Final report, July 1, 1984-July 31, 1988
The area of historic gas production in southwestern West Virginia has produced gas and minor oil for decades; has thick sequences of black shale; and has relatively broad, low-relief structures that generally trend northeast-to-southwest. The emerging area to the north (Pleasants, Wood, Ritchie, Calhoun, Wirt, and Roane Counties) has experienced appreciable oil in addition to gas production; has many siltstone units interbedded with the Devonian shales; lacks black shale in the eastern counties; and is dominated structurally by a north-south trending anticline that marks the western edge of a detached thrust sheet emplaced from the east. The authors' work has refined and clarified many stratigraphic relationships within the shales and equivalents to the east. On the basis of maps of cumulative production, and the stratigraphic distribution of shows, they concluded that black shales served as a source of gas, some of which migrated into surrounding rocks. In the historic area, where siltstones are rare or absent, some gas migrated to a number of intervals, but most stayed within the black shales. In the emerging area, most gas migrated to siltstone bundles. Although conventional stimulation methods differ marginally in how they affect cumulative production, adjusting for time, shot wells have done better than wells stimulated by the other most commonly used methods.
- Research Organization:
- West Virginia Geological and Economic Survey, Morgantown, WV (USA)
- OSTI ID:
- 7159748
- Report Number(s):
- PB-90-132002/XAB
- Resource Relation:
- Other Information: See also PB--87-134086
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
BLACK SHALES
NATURAL GAS
PRODUCTION
PETROLEUM
RECOVERY
WEST VIRGINIA
FORECASTING
GAS FLOW
INFORMATION SYSTEMS
MAPPING
NATURAL GAS WELLS
OIL WELLS
PROGRESS REPORT
STATISTICAL DATA
STRATIGRAPHY
TECTONICS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
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DOCUMENT TYPES
ENERGY SOURCES
FEDERAL REGION III
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC FORMATIONS
GEOLOGY
INFORMATION
MATERIALS
NORTH AMERICA
NUMERICAL DATA
OIL SHALES
USA
WELLS
030200* - Natural Gas- Reserves
Geology
& Exploration
030300 - Natural Gas- Drilling
Production
& Processing
020300 - Petroleum- Drilling & Production