Repeated Handy 3-D Surveys in Mountainous Areas.
---- A case study in Akinomiya geothermal area, Akita pref. Japan ----
Toshiyuki Yokota(1), Jun Matsushima(2), Yasukuni Okubo(1), Kazuo Yamaguchi(1), Naomi Kano(1), Shuichi Rokugawa(3), Hiroyuki Koike(3) and Kyosuke Onishi(3)
(1) Geological Survey of Japan, AIST, Japan. (2) Geological Survey of Japan, AIST (Presently, Japan National Oil Corporation), Japan. (3) University of Tokyo, Japan.
Contacts: yokota-t@aist.go.jp (Toshiyuki Yokota)
Abstract
We would like to examine the possibility of the simple 3-D survey named "handy 3-D. In the survey, vibrator shot points are located on the roads and the reservoirs are deployed as 3-D patch. If it is successful, number of the seismic reflection surveys carried out in the mountainous areas will be encouraged.We also demonstrate the applicability of the time-lapse seismic reflection survey to the geothermal reservoir monitoring.
Akinomiya geothermal area, Akita pref. Japan is the study area where four-month steam production test was performed. The baseline and monitoring surveys were conducted just after and one year after the test. Because the maximum reservoir pressure difference and minimum seasonal difference are satisfied simultaneously.
We find the similarity and difference of the results of the baseline and monitoring surveys which suggests the large scale geology and the change occurred in the reservoir, respectively.
Key words
raeg2003@tansa.kumst.kyoto-u.ac.jp
Last modified: Tue Nov 05 10:26:19 2002