Geological Storage of Carbon Dioxide in Coal Seam is Effective Method for Environment Protection and Energy Sustainable Development in China

摘要

The reduction of greenhouse gases CO_2 emission is a growing concern of many countries. The geological storage of CO_2 is useful and effective approaches to reduce CO_2 emission. The oil and natural gas industries have long commercial practice of CO_2 gas injection, enhanced oil recovery (CO_2-EOR). Because coal seam has strong absorption capacity for CO_2,the coal seam can be used as CO_2 geological storage reservoirs, and coal seam has such characteristics that coal seam is preference for CO_2 absorption and postponement for CH_4 absorption, CO_2 injection into coal seam can enhanced coal bed methane recovery, CO_2-ECBM, CH_4 is a new energy generated by methane from CO_2 injection into coal seam, and CH_4 is beneficial complement of the energy, CO_2 injection into coal seam can not only reduce greenhouse gases CO_2 emission and but also enhance coal bed methane recovery, which is very significance to environment protection and energy sustainable development in china.