CO2 sequestration is a promising technology for reducing anthropogenic greenhouse gas emissions while fossil fuels are still being used. CO2 preferentially sorbs to coal, displacing methane, making CO2-enhanced coalbed methane production an ideal candidate for CO2 sequestration. PSU-COALCOMP, a dual-porosity coalbed methane simulator, was used to model primary and secondary production of methane from coal, for a variety of coal properties and operational parameters. Primary production of methane and water was simulated until a specified reservoir pressure was reached, after which CO2 is injected in the center wells to displace methane, extending the reservoir's production of methane. Production continued until the CO2 concentration in the produced gas was too high. The higher the injection well pressure, the more CO2 could be absorbed to the coal, however, higher pressures decreased the sweep efficiency, causing large portions of the coal seam never to come in contact with CO2. This is an abstract of a paper presented at the SPE Eastern Regional Meeting (Canton, OH 10/17-19/2001).
|Original language||English (US)|
|State||Published - Dec 1 2002|
|Event||SPE - Eastern Regional Meeting - Proceedings "Racing to Meet America's Energy Needs" - Lexington, KY, United States|
Duration: Oct 23 2002 → Oct 25 2002
|Other||SPE - Eastern Regional Meeting - Proceedings "Racing to Meet America's Energy Needs"|
|Period||10/23/02 → 10/25/02|
All Science Journal Classification (ASJC) codes