Geological exploration of potential underground coal gasification sites in the Powder River Basin of Wyoming and Montana
Information obtained from exploratory drilling of potential coal-gasification sites in the Powder River Basin of Wyoming and Montana is summarized. The objectives were to obtain stratigraphic descriptions of the coal-bearing strata from cuttings and geophysical logs, determine the hydrologic characteristics of the coal and associated strata, and see if there were drilling and logging problems associated with deep, thick coal seams. It was decided to do preliminary hydrologic and gasification experiments on the shallower Felix coal before proceeding to more deeply buried coals. The types of information obtained included geophysical borehole logs, lithologic and stratigraphic logs derived from drill cutting samples, drilling rate data, stratigraphic columns showing the depth and thickness of the coal and associated strata, log analyses showing lithology, computer-generated average porosity, density and velocity, composition diagrams of the geophysical logs run and the lithologic correlations picked from the logs, and coal analysis from selected Felix Coal cores. Specific results are reported in numerous tables, graphs and survey charts.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7141409
- Report Number(s):
- UCRL-52237
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL DEPOSITS
EXPLORATION
WELL LOGGING
IN-SITU GASIFICATION
SITE SELECTION
BOREHOLES
CALIPER LOGGING
CALORIFIC VALUE
CHEMICAL COMPOSITION
COAL
DENSITY
DRILL CORES
ELECTRIC LOGGING
FRACTURES
GAMMA-GAMMA LOGGING
GEOLOGY
GEOPHYSICAL SURVEYS
HYDROLOGY
LITHOLOGY
MONTANA
NEUTRON LOGGING
ORIENTATION
POROSITY
STRATIGRAPHY
WYOMING
CARBONACEOUS MATERIALS
CAVITIES
COMBUSTION PROPERTIES
ENERGY SOURCES
FAILURES
FOSSIL FUELS
FUELS
GASIFICATION
GEOLOGIC DEPOSITS
IN-SITU PROCESSING
NORTH AMERICA
PHYSICAL PROPERTIES
PROCESSING
RADIOACTIVITY LOGGING
RESOURCES
ROCKY MOUNTAIN REGION
THERMOCHEMICAL PROCESSES
USA
011000* - Coal
Lignite
& Peat- Reserves
Geology
& Exploration
010404 - Coal
Lignite
& Peat- Gasification