Monitoring underground migration of sequestered CO2 using self-potential methods

被引:11
作者
Ishido, Tsuneo [1 ]
Pritchett, John W. [2 ]
Tosha, Toshiyuki [1 ]
Nishi, Yuji [1 ]
Nakanishi, Shigetaka [3 ]
机构
[1] AIST, Geol Survey Japan, Cent 7, Tsukuba, Ibaraki 3058567, Japan
[2] Sci Applicat Int Corp, San Diego, CA USA
[3] Elect Powrer Dev Co J Power, Tokyo, Japan
来源
GHGT-11 | 2013年 / 37卷
关键词
saline aquifers; geophysical monitoring technique; geobattery;
D O I
10.1016/j.egypro.2013.06.308
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
To appraise the utility of the self-potential (SP) method for monitoring CO2 injected into saline aquifers, we carried out numerical simulations based upon a hypothetical aquifer system and calculated the temporal changes in SP caused by changing underground conditions as computed by the reservoir simulation. In addition to electrokinetic coupling, we considered the geobattery mechanism operating near metallic well casings. The results show that SP measurements in the neighborhoods of wellheads offer quite promising and effective methods for sensing the approach of CO2 to the well casings deep within the subsurface. (C) 2013 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:4077 / 4084
页数:8
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