A concept of Enhanced Methane Recovery by high pressure CO2 storage in abandoned coal mine

作者：Lutynski Marcin^*

来源：Gospodarka Surowcami Mineralnymi-Mineral Resources Management, 2010, 26(1): 93-104.

• Carbon dioxide
• abandoned coal mine
• CO2 storage
• gas sorption
• Enhanced Methane Recovery

Due to increasing carbon dioxide emissions new methods of carbon capture and storage away from biosphere are being under investigation. Considering favorable geological structure i.e.: impermeable overburden and large volume of mine voids one of the places of geological CO2 storage can be abandoned underground coal mines. The article presents the concept of CO2 high pressure storage in abandoned coal mine as one of the methods of its geological sequestration. CO2 can be stored in a mine as a free gas, gas dissolved in water and gas adsorbed in remaining coal seams. Estimation of storage capacity of a mine was done with the use of data from the mine as well as laboratory sorption experiments. Estimated storage capacity of a case study mine as a high pressure CO2 sink was 8.09 . 10(6) t. Enhanced methane recovery from remaining coal seams which may occur after CO2 injection was also analyzed. For the purpose of the study reservoir simulator for unconventional reservoirs was used. Input data were typical for Upper Silesian Coal Basin. Results of the study indicate that injection of CO2 into a mine enhance methane recovery through surface wells.

• 出版日期2010