Abstract
Abstract In 1998, the IEA Greenhouse Gas RD (2) review the current status of research into the enhanced gas recovery (EGR) and geological storage of CO2 in coals; and (3) develop an updated assessment of the global potential for EGR and geological storage of CO2 in coal formations. The paper summarizes the results of this work, along with other related activities. It reviews the results from more recent CO2- ECBM and CO2 storage trials in the San Juan Basin in the USA, the results of other small-scale demonstration projects conducted by the U.S. Department of Energy's (DOE's) Regional Carbon Sequestration Partnerships (RCSP) Program, and reviews the status of an ongoing DOE-funded project conducted by CONSOL and Virginia Tech University in the USA, as well as for the Coal-Seq Consortium. The IEAGHG study concluded that the technical recovery potential for methane from the world's coal seams is estimated to be 79 trillion cubic meters (Tcm) globally, 29 Tcm associated with conventional CBM recovery, and 50 Tcm from the application of CO2- ECBM recovery as a secondary production technique. This could facilitate the potential storage of nearly 488 billion metric tons (or gigatonnes (Gt)) of CO2 in unmineable coal seams.
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