Cross-borehole fracture mapping using electromagnetic geotomography

Conference · Tue Apr 20 04:00:00 EST 1982

OSTI ID:5291702

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

This article describes the evaluation of a new geophysical technique used to map fractures between boreholes: electromagnetic geotomography used in conjunction with salt water tracers. An experiment has been performed in a granitic rock mass. Geotomographic images have been generated and compared with borehole geophysical data: neutron logs, acoustic velocity logs, caliper logs and acoustic televiewer records. Comparisons between the images and the geophysical logs indicate that clusters of fractures were detected but single fractures were not.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5291702
• Report Number(s): UCRL-87536; CONF-820803-2; ON: DE82012699
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580203* -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
BOREHOLES
CAVITIES
COMPARATIVE EVALUATIONS
DIAGNOSTIC TECHNIQUES
ELECTRICAL SURVEYS
ELECTROMAGNETIC SURVEYS
FAILURES
FRACTURES
GEOPHYSICAL SURVEYS
GRANITES
IGNEOUS ROCKS
IMAGES
ISOTOPE APPLICATIONS
MAPPING
PLUTONIC ROCKS
ROCKS
SURVEYS
TOMOGRAPHY
TRACER TECHNIQUES