Predicted CO2 enhanced coalbed methane recovery and CO2 sequestration in China

✍ Scribed by Hongguan Yu; Guangzhu Zhou; Weitang Fan; Jianping Ye

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 741 KB
• Volume: 71
• Category: Article
• ISSN: 0166-5162
• DOI: 10.1016/j.coal.2006.10.002

✦ Synopsis

The injection of CO 2 in coal beds can enhance the recovery of coalbed methane (ECBM) and at the same time it is a very attractive option for geologic CO 2 storage as CO 2 is strongly absorbed onto the coal. Some factors affecting the primary production of CBM and ECBM recovery and CO 2 sequestration in China have been studied, and CBM recovery quantity with primary production, the CO 2 sequestration capacity of coal beds, and the ECBM recovery potential have been investigated in 29 CBM zones in China. The results show that the primary CBM and ECBM recovery potential are estimated to be over 3.357 and 3.751 Tm 3 , which equals 218 years at China's 2002 production rate. The prediction also indicate that CO 2 sequestration potential is about 142.67 Gt in China's coal bed, which could sequester CO 2 emissions for almost 50 years based on China's CO 2 emissions levels in 2000.