In-situ fracture mapping using geotomography and brine tracers

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6140677

Deadrick, F J; Ramirez, A L; Lytle, R J

The Lawrence Livermore National Laboratory is currently assessing the capabilities of high resolution geophysical methods to characterize geologic sites for the disposal of high level nuclear waste. A successful experiment has recently been performed in which salt water tracers and high frequency electromagnetic waves were utilized to map rock mass fracture zones in-situ. Multiple cross-borehole EM transmissions were used to generate a tomographic image of the fractured rock region between two boreholes. The tomographs obtained correlate well with conventional wireline geophysical logs which can be used to infer the location of fractured zones in the rock mass. This indirect data suggests that the geotomography and brine tracer technique may have merit in mapping fractured zones between boreholes.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6140677
• Report Number(s): UCRL-85712; CONF-811012-12; ON: DE82002101
• Country of Publication: United States
• Language: English

Related Subjects

052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
58 GEOSCIENCES
580203* -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
BOREHOLES
BRINES
CAVITIES
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
FAILURES
FRACTURES
GRANITES
IGNEOUS ROCKS
ISOTOPE APPLICATIONS
MANAGEMENT
MAPPING
PLUTONIC ROCKS
RADIATIONS
RADIOACTIVE WASTE DISPOSAL
ROCKS
TOMOGRAPHY
TRACER TECHNIQUES
UNDERGROUND DISPOSAL
USES
WASTE DISPOSAL
WASTE MANAGEMENT