Results of Phase 1 postburn drilling and coring, Rocky Mountain 1 Underground Coal Gasification Site, Hanna Basin, Wyoming
The Rocky Mountain 1 (RM1) Underground Coal Gasification (UCG) test consisted of two different module configurations: the controlled retracting injection point (CRIP) and elongated linked well (ELW) configurations. The postburn coring of the RM1 UCG site was designed in two phases to fulfill seven objectives outlined in the Western Research Institute's (WRI) annual project plan for 1988--1989. The seven objectives were to (1) delineate the areal extent of the cavities, (2) identify the extent of roof collapse, (3) obtain samples of all major cavity rock types, (4) characterize outflow channels and cavity stratigraphy, (5) characterize the area near CRIP points and ignition points, (6) further define the structural geology of the site, and (7) identify the vertical positioning of the horizontal process wells within the coal seam. Phase 1 of the coring was completed in the summer of 1989 and served to partially accomplish all seven objectives. In relation to the seven objectives, WRI determined that (1) the ELW cavity extends farther to the west and the CRIP cavity was located 5--10 feet farther to the south than anticipated; (2) roof collapse was contained within unit A in both modules; (3) samples of all major rock types were recovered; (4) insufficient data were obtained to characterize the outflow channels, but cavity stratigraphy was well defined; (5) bore holes near the CRIP points and ignition point did not exhibit characteristics significantly different from other bore holes in the cavities; (6) a fault zone was detected between VIW=1 and VIW-2 that stepped down to the east; and (7) PW-1 was only 7--12 feet below the top of the coal seam in the eastern part of the ELW module area; and CIW-1 was located 18--20 feet below the top of the coal seam in the CRIP module area. 7 refs., 7 figs., 1 tab.
- Research Organization:
- Western Research Inst., Laramie, WY (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC21-86MC11076
- OSTI ID:
- 6286387
- Report Number(s):
- DOE/MC/11076-2987; ON: DE91002067
- Country of Publication:
- United States
- Language:
- English
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COAL SEAMS
IN-SITU GASIFICATION
BOREHOLES
CAVITIES
GEOLOGY
IGNITION
INJECTION WELLS
RESERVOIR ROCK
SITE CHARACTERIZATION
STRATIGRAPHY
UNDERGROUND SPACE
WYOMING
COAL DEPOSITS
DEVELOPED COUNTRIES
FEDERAL REGION VIII
GASIFICATION
GEOLOGIC DEPOSITS
IN-SITU PROCESSING
MINERAL RESOURCES
NORTH AMERICA
PROCESSING
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SPACE
THERMOCHEMICAL PROCESSES
USA
WELLS
010404* - Coal
Lignite
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011000 - Coal
Lignite
& Peat- Reserves
Geology
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