Effects of partial oil saturation on gas productivity of Appalachian Devonian shales

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6015348

Soeder, D J

High resolution core analysis performed on samples of Devonian lower Huron Shale led to the discovery that permeability to gas varied as a function of pressure drop across the sample. In addition, the lower Huron Shale cores had less than 0.2% porosity to gas. These data strongly suggest the presence of a mobile liquid in the pores blocking gas flow. Chromatographic analysis on pulverized shale chips treated with methylene chloride revealed the liquid to be a light paraffinic petroleum similar in composition to other Appalachian Basin crudes. The Conclusion reached from this study is that shales with a moderate to high oil content will not normally produce commercial amounts of gas, despite the fact that significant quantities of gas may have been generated and trapped in the shale pores along with the oil. It appears that eastern ''oil shales'' are incompatible with eastern ''gas shales,'' and factors that make the one economical do so to the detriment of the other. 9 refs., 7 figs.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC21-83MC20342
• OSTI ID: 6015348
• Report Number(s): CONF-851144-2; ON: DE86007276
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
04 OIL SHALES AND TAR SANDS
040201 -- Oil Shales & Tar Sands-- Site Geology-- (-1989)
APPALACHIA
BITUMINOUS MATERIALS
BLACK SHALES
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
DATA
DEVONIAN PERIOD
DRILL CORES
ENERGY SOURCES
EXPERIMENTAL DATA
EXPLORATION
FOSSIL FUELS
FUELS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
INFORMATION
MATERIALS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
NUMERICAL DATA
OIL SATURATION
OIL SHALES
PALEOZOIC ERA
PERMEABILITY
POROSITY
RESOURCES
SATURATION
USA