LLNL underground coal-gasification project. Quarterly progress report, October-December 1982
- eds.
Further analysis has been done on the cavity excavation data obtained in the large block (LBK) experiments, which were done at a coal mine in the Tono Basin near Centralia, Washington, in the winter of 1981-82. The cavity shapes determined by the LBK excavations were reported in a previous quarterly report. The new analysis determines for each observed cavity an equivalent cavity having an elliptical transverse cross section; such equivalent cavities are better suited for use in computer models of the underground coal gasification (UCG) process. Our next UCG field experiment will be a second test of the CRIP (controlled retracting injection point) technique, this one to be on a larger scale than the CRIP test done during the LBK experiments. Designated as a partial-seam CRIP test, it will be done in the same area as the LBK experiments. Only the top half of the coal seam will be gasified, to ensure plenty of roof interaction. The burn is scheduled to continue for 36 days, which should provide time for a number of CRIP movements of the injection point. Information gained in this experiment will be used to plan one or more full-seam CRIP tests in the same area. 17 figures, 5 tables.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6044775
- Report Number(s):
- UCRL-50026-82-4; ON: DE83013699
- Country of Publication:
- United States
- Language:
- English
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010404* -- Coal
Lignite
& Peat-- Gasification
CAVITIES
COAL DEPOSITS
COAL GASIFICATION
COAL SEAMS
DATA
EXCAVATION
EXPERIMENTAL DATA
FEDERAL REGION X
FIELD TESTS
GASIFICATION
GEOLOGIC DEPOSITS
IN-SITU GASIFICATION
IN-SITU PROCESSING
INFORMATION
MINERAL RESOURCES
NORTH AMERICA
NUMERICAL DATA
PROCESSING
RESEARCH PROGRAMS
RESOURCES
TESTING
THERMOCHEMICAL PROCESSES
USA
WASHINGTON