Potential use of the CSAMT geophysical technique to map UCG processes

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5064475

Bartel, L C

Sandia National Laboratories has been developing surface geophysical techniques to map in situ processes, in particular the underground coal gasification (UCG) process. The potential use will be discussed of the controlled source audio-frequency magnetotelluric (CSAMT) electromagnetic surface geophysical technique to map and monitor the UCG process. The technique has been field tested for the UCG application by mapping coal mine fires and by mapping the Hanna II, Phases 2 and 3 and Rawlins T-2 cavities. Results of these field trials demonstrate that the CSAMT technique is an excellent technique for determining the lateral extent of the UCG process. In addition, the shape of the process is readily apparent in the raw data without extensive data reduction, and by careful design of the mapping survey; the results are not degraded by the presence of the surface plumbing. A brief description will be given of the deployment of the CSAMT for UCG process mapping and monitoring.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5064475
• Report Number(s): SAND-82-0958C; CONF-820840-11; ON: DE82020627
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
COAL GASIFICATION
ELECTRICAL SURVEYS
ELECTROMAGNETIC SURVEYS
FIELD TESTS
GASIFICATION
GEOPHYSICAL SURVEYS
IN-SITU GASIFICATION
IN-SITU PROCESSING
MAGNETOTELLURIC SURVEYS
MAPPING
MONITORING
PROCESSING
SURVEYS
TESTING
THERMOCHEMICAL PROCESSES