Field Test and History Matching of the CO2 Sequestration Project in Coal Seams in Japan
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概要
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Global warming is one of the most important environmental problems facing the world and considered to be caused by an atmospheric greenhouse effect. The contribution of CO<SUB>2</SUB> to this greenhouse effect is estimated to equate approximately 50% of the effect of all greenhouse gases together, therefore the reduction of CO<SUB>2</SUB> emission is becoming extremely important. One of innovative technologies for CO<SUB>2</SUB> reduction in the atmosphere is CO<SUB>2</SUB> sequestration. In Japan, a six-years project on CO<SUB>2</SUB> sequestration in Japanese coal seams was started in 2002. This project involves several R&D items including a field test. A micro pilot test has been conducted in the Ishikari coal field since 2003. CO<SUB>2</SUB> was actually injected into coal seam in 2004 for the first time in Japan. A larger volume of CO<SUB>2</SUB> was injected in 2005. This paper investigates these field tests and discusses important results obtained through the history matching of these CO<SUB>2</SUB> sequestration field tests. It is concluded that CO<SUB>2</SUB> was sequestrated in coal seams and at the same time, the recovery of coalbed methane was enhanced.
- 日本素材物性学会の論文
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