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Subsurface interpretation based on geophysical data set using geothermal database system `GEOBASE`. 2; Chinetsu database system `GEOBASE` wo riyoshita Kakkonda chinetsu chiiki no chika kozo kaiseki. 2

Abstract

Five cross sections were applied as a result of MT method investigations in addition to the results of conventional analyses at the Kakkonda geothermal area; three-dimensional resistivity distribution was made into a database by using the Kriging method which makes a matching with anisotropy of seismic center distribution in micro-earthquakes; and the database was compared with the data derived from surveys on the pilot survey well WD-1a and the side-truck well WD-1b thereof. As a result, it was found that the well WD 1b which encountered a water loss zone had the water loss zone exist in a region with relatively lower resistivity than in the well WD-1a which did not encounter a water loss zone. The region in which the water loss zone was encountered existed in a very steep slope region going from the high resistivity region in the west side toward the low resistivity region in the east side. This fact suggests a possibility that fractures have developed in this region with sharp slope in the resistivity in this area. Adding three-dimensional complementary function to the GEOBASE database by using a simple Kriging allowed the direction of anisotropy in spatial data to be freely and quickly decided.  More>>
Authors:
Osato, K; Sato, T; Miura, Y; Yamane, K; [1]  Doi, N; [2]  Uchida, T [3] 
  1. GERD Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan)
  2. Japan Metals and Chemicals Co. Ltd., Tokyo (Japan)
  3. New Energy and Industrial Technology Development Organization, Tokyo, (Japan)
Publication Date:
May 27, 1997
Product Type:
Conference
Report Number:
CONF-9705167-
Reference Number:
SCA: 150301; PA: NEDO-97:912290; EDB-97:116177; SN: 97001846582
Resource Relation:
Conference: 96. SEGJ conference, Butsuri tansa gakkai dai 96 kai (1997 nendo shunki) gakujutsu koenkai, Tokyo (Japan), 27-29 May 1997; Other Information: PBD: 27 May 1997; Related Information: Is Part Of Proceeding of the 96th (spring, fiscal 1997) SEGJ Conference; PB: 502 p.; Butsuri tansa gakkai dai 96 kai (1997 nendo shunki) gakujutsu koenkai koen ronbunshu
Subject:
15 GEOTHERMAL ENERGY; DATA BASE MANAGEMENT; GEOTHERMAL SYSTEMS; KAKKONDA GEOTHERMAL FIELD; MAGNETOTELLURIC SURVEYS; GEOLOGIC STRUCTURES; GEOTHERMAL RESOURCES; EARTHQUAKES; ORIGIN; ANISOTROPY; DEPTH 1-3 KM; EXPLORATORY WELLS; GEOLOGIC FRACTURES; MAPPING
OSTI ID:
522690
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97770262; TRN: 97:912290
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97770262
Submitting Site:
NEDO
Size:
pp. 425-429
Announcement Date:
Sep 29, 1997

Citation Formats

Osato, K, Sato, T, Miura, Y, Yamane, K, Doi, N, and Uchida, T. Subsurface interpretation based on geophysical data set using geothermal database system `GEOBASE`. 2; Chinetsu database system `GEOBASE` wo riyoshita Kakkonda chinetsu chiiki no chika kozo kaiseki. 2. Japan: N. p., 1997. Web.
Osato, K, Sato, T, Miura, Y, Yamane, K, Doi, N, & Uchida, T. Subsurface interpretation based on geophysical data set using geothermal database system `GEOBASE`. 2; Chinetsu database system `GEOBASE` wo riyoshita Kakkonda chinetsu chiiki no chika kozo kaiseki. 2. Japan.
Osato, K, Sato, T, Miura, Y, Yamane, K, Doi, N, and Uchida, T. 1997. "Subsurface interpretation based on geophysical data set using geothermal database system `GEOBASE`. 2; Chinetsu database system `GEOBASE` wo riyoshita Kakkonda chinetsu chiiki no chika kozo kaiseki. 2." Japan.
@misc{etde_522690,
title = {Subsurface interpretation based on geophysical data set using geothermal database system `GEOBASE`. 2; Chinetsu database system `GEOBASE` wo riyoshita Kakkonda chinetsu chiiki no chika kozo kaiseki. 2}
author = {Osato, K, Sato, T, Miura, Y, Yamane, K, Doi, N, and Uchida, T}
abstractNote = {Five cross sections were applied as a result of MT method investigations in addition to the results of conventional analyses at the Kakkonda geothermal area; three-dimensional resistivity distribution was made into a database by using the Kriging method which makes a matching with anisotropy of seismic center distribution in micro-earthquakes; and the database was compared with the data derived from surveys on the pilot survey well WD-1a and the side-truck well WD-1b thereof. As a result, it was found that the well WD 1b which encountered a water loss zone had the water loss zone exist in a region with relatively lower resistivity than in the well WD-1a which did not encounter a water loss zone. The region in which the water loss zone was encountered existed in a very steep slope region going from the high resistivity region in the west side toward the low resistivity region in the east side. This fact suggests a possibility that fractures have developed in this region with sharp slope in the resistivity in this area. Adding three-dimensional complementary function to the GEOBASE database by using a simple Kriging allowed the direction of anisotropy in spatial data to be freely and quickly decided. It was learned that this capability exhibits strong power in a mapping work in structures where such anisotropy as a geothermal zone is highly dominant. 5 refs., 8 figs., 2 tabs.}
place = {Japan}
year = {1997}
month = {May}
}