「二酸化炭素炭層固定化技術開発」における圧入予備実験について

概要

論文の詳細を見る
The Japanese Ministry of Economy, Trade and Industry (METI) has undertook 5-Year project on CO2 sequestration in coal seams since 2002. This project consists of fundamental research into CH4-CO2-coal interaction, CO2 monitoring technologies, cost reduction of CO2 capture from flue gases, and the economics of sequestration. Another component of the project is a field pilot test. After preliminary screening of potential sites, the Ishikari coalfield in Hokkaido, Japan, was selected as the pilot test site. In 2003, a well was drilled in the South Oh-Yubari district within the Ishikari coalfield, and named IW-1. This was the first well drilled in Japan from the surface to a coal seam for purposes of CO2 sequestration and was designed for CO2 injection. In 2004, second well (called PW-1) was drilled at the surface location 195m away from IW-1 for the production purpose. The two wells were together intended to constitute a multi-well pilot test site. A multi well CO2 injection/CH4 production test was conducted using both IW-1 and PW-1. This paper introduces the overall coal seam CO2 sequestration project and presents the results of the multi well injection/production test.