Eastern gas shales. [Appalachian, Illinois and Michigan Basins]

Technical Report · Fri Feb 01 04:00:00 EST 1985

OSTI ID:5835141

Eastern Gas Shales research has for its goal the development of scientific and engineering knowledge to permit the recovery of natural gas from shale formations that underlie the Appalachian, Illinois, and Michigan Basins. As information was gathered on the geology and chemistry of gas-bearing Devonian shales, studies of well completion and stimulation methods were conducted in the laboratory as well as in the field. Key accomplishments in geologic research are as follows: Geologic and geochemical studies estimated gas resources in place to be 2500 trillions of cubic feet (Tcf) in Appalachian Basin, 85 Tcf in the Illinois Basin, and 76 Tcf in the Michigan Basin. Shale gas resources in the Appalachian Basin were appraised to be between 577 and 1131 Tcf. Screening reports identifying areas favorable for shale gas discovery and development were published and distributed. Over 150 new geologic maps were prepared and distributed to guide shale gas exploration. Geologic and geochemical analyses for 35 cored wells were compiled and published. Key accomplishments in reservoir assessment, diagnostics, fracturing, and production research are as follows: A wireline tool was designed for measuring rock stress at multiple depths in the borehole. The tailored pulse method of stimulation was developed and tested. Guidelines were established for selecting a stimulation method in various regions through the analyses of 95 tests. It was established that prospects for infill well development are widespread. Predictive capability was developed for dual-porosity, dual-permeability shale reservoir. Key accomplishments in technical integration and evaluation are as follows: Completed estimates of technically recoverable gas resources in Ohio for selected stimulation methods. The Drilling Decision Tree System was completed and sent to the National Energy Software Center along with its users manual. 5 figures, 3 tables.

• Research Organization: USDOE Morgantown Energy Technology Center, WV
• OSTI ID: 5835141
• Report Number(s): DOE/METC/SP-216; ON: DE85001983
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030100 -- Natural Gas-- Reserves-- (-1989)
030200* -- Natural Gas-- Reserves
Geology
& Exploration
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
APPALACHIA
BITUMINOUS MATERIALS
BLACK SHALES
BOREHOLES
CARBONACEOUS MATERIALS
CAVITIES
CHATTANOOGA FORMATION
CHEMISTRY
COMMINUTION
DATA
DECISION TREE ANALYSIS
DEVONIAN PERIOD
ENERGY SOURCES
EXPERIMENTAL DATA
FEDERAL REGION II
FEDERAL REGION III
FEDERAL REGION IV
FEDERAL REGION V
FORECASTING
FOSSIL FUELS
FRACTURED RESERVOIRS
FRACTURING
FUELS
GEOCHEMISTRY
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGY
ILLINOIS
ILLINOIS BASIN
INDIANA
INFORMATION
KENTUCKY
MAPPING
MATERIALS
MICHIGAN
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS WELLS
NEW YORK
NORTH AMERICA
NUMERICAL DATA
OHIO
OIL SHALES
PALEOZOIC ERA
PENNSYLVANIA
PERMEABILITY
POROSITY
RECOMMENDATIONS
RESEARCH PROGRAMS
RESOURCE ASSESSMENT
RESOURCES
STIMULATION
STRESSES
TENNESSEE
USA
WELL COMPLETION
WELL STIMULATION
WELLS
WEST VIRGINIA