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Appropriate electromagnetic techniques for imaging geothermal fracture zones

Abstract

Electromagnetic surface detection of fracture zones has often been approached by using the magnetotelluric method. This technique suffers greatly from the quantity and scale of the conductive inhomogeneities lying above the fracture zones. Additionally, it suffers from the inherent inability to focus the source on the target. There are no such source focusing capabilities in magnetotellurics. Accordingly, the quantity of magnetotelluric data required to resolve targets in such complex conditions can make the technique inefficient and insufficient from a cost perspective. When attempting to reveal a subsurface structure and image it, the basic physical responses at hand must be kept in mind, and the appropriate source must be utilized, which most effectively illuminates the target. A further advantage to controlled sources is that imaging techniques may be used to accentuate the response due to knowledge and control of the source.
Authors:
Groom, R; Walker, P [1] 
  1. PetRos EiKon Incorporated, Ontario (Canada)
Publication Date:
May 01, 1996
Product Type:
Conference
Report Number:
CONF-9605233-
Reference Number:
SCA: 150301; 440700; PA: NEDO-96:913489; EDB-96:170145; SN: 96001687096
Resource Relation:
Conference: 94. SEGJ (The Society of Exploration Geophysicists of Japan) Conference, Butsuri tansa gakkai dai 94 kai (1996 nendo shunki) gakujutsu koenkai, Tokyo (Japan), 15-17 May 1996; Other Information: PBD: May 1996; Related Information: Is Part Of Proceedings of the 94th SEGJ (The Society of Exploration Geophysicists of Japan) Conference; PB: 475 p.; Butsuri tansa gakkai dai 94 kai (1996 nendo shunki) gakujutsu koenkai koen ronbunshu
Subject:
15 GEOTHERMAL ENERGY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; FRACTURED RESERVOIRS; GEOTHERMAL SYSTEMS; IMAGE PROCESSING; GEOLOGIC FRACTURES; ELECTROMAGNETIC SURVEYS; MAGNETOTELLURIC SURVEYS; ELECTRIC CONDUCTIVITY; GEOTHERMAL RESOURCES
OSTI ID:
395526
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE97709027; TRN: 96:913489
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97709027
Submitting Site:
NEDO
Size:
pp. 268-270
Announcement Date:

Citation Formats

Groom, R, and Walker, P. Appropriate electromagnetic techniques for imaging geothermal fracture zones. Japan: N. p., 1996. Web.
Groom, R, & Walker, P. Appropriate electromagnetic techniques for imaging geothermal fracture zones. Japan.
Groom, R, and Walker, P. 1996. "Appropriate electromagnetic techniques for imaging geothermal fracture zones." Japan.
@misc{etde_395526,
title = {Appropriate electromagnetic techniques for imaging geothermal fracture zones}
author = {Groom, R, and Walker, P}
abstractNote = {Electromagnetic surface detection of fracture zones has often been approached by using the magnetotelluric method. This technique suffers greatly from the quantity and scale of the conductive inhomogeneities lying above the fracture zones. Additionally, it suffers from the inherent inability to focus the source on the target. There are no such source focusing capabilities in magnetotellurics. Accordingly, the quantity of magnetotelluric data required to resolve targets in such complex conditions can make the technique inefficient and insufficient from a cost perspective. When attempting to reveal a subsurface structure and image it, the basic physical responses at hand must be kept in mind, and the appropriate source must be utilized, which most effectively illuminates the target. A further advantage to controlled sources is that imaging techniques may be used to accentuate the response due to knowledge and control of the source.}
place = {Japan}
year = {1996}
month = {May}
}