Physical and chemical characterization of Devonian gas shale. Quarterly status report, October 1-December 31, 1978
On shale samples from the WV-6 (Monongalia County, West Virginia) well, mean total gas yield was 80.4 ft/sup 3//ton. Mean hydrocarbon gas yield was 5.7 ft/sup 3//ton, 7% of total yield. Methane was the major hydrocarbon component and carbon dioxide the major nonhydrocarbon component. Oil yield was negligible. Clay minerals and organic matter were the dominant phases of the shale. Illite averages 76% of the total clay mineral content. This is detrital illite. Permeation of methane, parallel to the bedding direction for select samples from WV-5 (Mason County, West Virginia) well ranges from 10/sup -4/ to 10/sup -12/ darcys. The permeability of these shales is affected by orgaic carbon content, density, particle orientation, depositional facies, etc. Preliminary studies of Devonian shale methane sorption rates suggest that these rates may be affected by shale porosity, as well as absorption and adsorption processes. An experimental system was designed to effectively simulate sorption of methane at natural reservoir conditions. The bulk density and color of select shales from Illinois, Appalachian and Michigan Basins suggest a general trend of decreasing density with increasing organic content. Black and grayish black shales have organic contents which normally exceed 1.0 wt %. Medium dark gray and gray shales generally have organic contents less than 1.0 wt %.
- Research Organization:
- Monsanto Research Corp., Miamisburg, OH (USA). Mound Facility
- DOE Contract Number:
- EY-76-C-04-0053
- OSTI ID:
- 5630664
- Report Number(s):
- MLM-MU-78-72-0003; MLM-EGSP-TPR-Q-008
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
04 OIL SHALES AND TAR SANDS
BLACK SHALES
NATURAL GAS DEPOSITS
ADSORPTION
CLAYS
COLOR
CORRELATIONS
DENSITY
DEVONIAN PERIOD
GAS YIELDS
MATERIAL BALANCE
METHANE
MINERALOGY
NATURAL GAS WELLS
PERMEABILITY
RESEARCH PROGRAMS
SHALE GAS
WEST VIRGINIA
ALKANES
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CENTRAL REGION
CHATTANOOGA FORMATION
CRYOGENIC FLUIDS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
HYDROCARBONS
MINERALS
NORTH AMERICA
OIL SHALES
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANOLEPTIC PROPERTIES
PALEOZOIC ERA
PHYSICAL PROPERTIES
RESOURCES
SORPTION
USA
WELLS
YIELDS
030200* - Natural Gas- Reserves
Geology
& Exploration
040201 - Oil Shales & Tar Sands- Site Geology- (-1989)