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Geophysical approach to gas hydrates studies in Japan

Abstract

Studies are under way to estimate by geophysical approaches the saturation of gasses and gas hydrates in the sedimentary rock. Gasses and gas hydrates under stable strata are deemed to be fossil fuel resources. If the characteristics of sonic or elastic waves are related to the amount of gasses or gas hydrates, it will be possible to assess quantitatively the said resources by geophysical approaches. This is the reason why studies have been started for the acquisition of data of a wider frequency range by seismic exploration and about stratum models concerned. In relation to the mean elastic moduli of mixed materials, studies have been made about the applicability of several theories to data from wire-line test boring, to data from seismic exploration, and to pits in zones of perpetual frost. The effort to acquire data of a wider frequency range by seismic exploration aims at filling up the gap between the now-available seismic exploration data and laboratory data. It is believed that these will enable a quantitative assessment of the said resources. 6 refs., 3 figs.
Authors:
Sakai, A; Mizukoshi, I [1] 
  1. Japan Petroleum Exploration Corp., Tokyo (Japan)
Publication Date:
Oct 22, 1997
Product Type:
Conference
Report Number:
CONF-9710214-
Reference Number:
SCA: 440700; 580000; PA: JP-97:0G4552; EDB-98:075717; SN: 98001944488
Resource Relation:
Conference: 97. SEGJ conference, Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai, Sapporo (Japan), 22-24 Oct 1997; Other Information: PBD: 22 Oct 1997; Related Information: Is Part Of Proceeding of the 97th (Fall, Fiscal 1997) SEGJ Conference; PB: 371 p.; Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai koen ronbunshu
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 58 GEOSCIENCES; GAS HYDRATES; METHANE; SATURATION; SEISMIC SURVEYS; SEDIMENTARY ROCKS; FREQUENCY RANGE; FOSSIL FUELS; GEOLOGIC MODELS; ELASTICITY; WELL DRILLING
OSTI ID:
622721
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE98751022; TRN: JN97G4552
Availability:
Available from Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, (Japan); OSTI as DE98751022
Submitting Site:
NEDO
Size:
pp. 180-182
Announcement Date:
Jul 24, 1998

Citation Formats

Sakai, A, and Mizukoshi, I. Geophysical approach to gas hydrates studies in Japan. Japan: N. p., 1997. Web.
Sakai, A, & Mizukoshi, I. Geophysical approach to gas hydrates studies in Japan. Japan.
Sakai, A, and Mizukoshi, I. 1997. "Geophysical approach to gas hydrates studies in Japan." Japan.
@misc{etde_622721,
title = {Geophysical approach to gas hydrates studies in Japan}
author = {Sakai, A, and Mizukoshi, I}
abstractNote = {Studies are under way to estimate by geophysical approaches the saturation of gasses and gas hydrates in the sedimentary rock. Gasses and gas hydrates under stable strata are deemed to be fossil fuel resources. If the characteristics of sonic or elastic waves are related to the amount of gasses or gas hydrates, it will be possible to assess quantitatively the said resources by geophysical approaches. This is the reason why studies have been started for the acquisition of data of a wider frequency range by seismic exploration and about stratum models concerned. In relation to the mean elastic moduli of mixed materials, studies have been made about the applicability of several theories to data from wire-line test boring, to data from seismic exploration, and to pits in zones of perpetual frost. The effort to acquire data of a wider frequency range by seismic exploration aims at filling up the gap between the now-available seismic exploration data and laboratory data. It is believed that these will enable a quantitative assessment of the said resources. 6 refs., 3 figs.}
place = {Japan}
year = {1997}
month = {Oct}
}