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Strategic Study of CAE >> 2012, Volume 14, Issue 2

Test of and evaluation on elevation of coalbed methane recovery ratio by injecting and burying CO2 for 3# coal seam of north section of Shizhuang, Qingshui Basin, Shanxi

1. China United Coalbed Methane Co., Ltd., Beijing 100011,China;

2. Alberta Research Council ,Edmonton T6N1E4, Canada

Funding project:科技部国际科技合作项目(2007DFB60050) Received: 2011-08-24 Available online: 2012-04-17 16:17:36.000

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Abstract

By conducting geological and engineering evaluation on deep coalbed methane injection in North Section, Shizhuang, South Qingshui Basin, methane extraction technology by deep coalbed injection of CO2 is thought applicable for north block, Shizhuang. By miniature and pilot test for SX-001 well, change rules of gas production, water production, gas composition and well bottom pressure of the SX-001 well before and after injection are summarized. The gas production after injection is 2.45 times of that before injection as shown by on-site test. Under pressure lower than rupturing pressure for coal seam, 20 of CO2 can be injected smoothly daily with slow elevation of pressure. After injection of CO2, the coal rock swells and the local coal seam get less penetration ratio, which recovers after extraction for a period of time. The total replacement ratio of hydrocarbon gas reaches 14.18 cm3/g within the scope influenced by CO2 injection in the target coal seam. The test result proves that extraction of coalbed methane by CO2 injection can realize burial of CO2 and elevation of recovery ratio for the coalbed methane well.

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References

[ 1 ] 叶建平,冯三利. 沁水盆地南部注二氧化碳提高煤层气采收率微型先导性试验研究[J].石油学报,2007(4):77-80. link1

[ 2 ] 中联媒层气有限责任公司,阿尔伯达技术研究。中国二氧化碳注人提高媒层气采收率先导性试验技术[M].北京:地质出版社.2008.

[ 3 ] Seoll Reeves and Anne Taillefert Advanced Resources Intersation-al.Reservoir Modeling for the Design of the RECOPOL CO2Se-questration Project[R].Washington DC;Department of Energy,2002.

[ 4 ] Van Bergen.HUM Pagnier Development of a field experiment of ECBM in the Upper Silesian Coal Basin of Poland (RECOPOL)[R].2003.

[ 5 ] Mavor MJ, Gunter WD, Robinson JR. Aberta Multiwell Micro-Pilot Testing for CBf Properties, Enhaneed Methane Recovery and CO2Storage Potential Paper 412,2004 Intercational Coalbed Methane Symposjum[R]. Tuscaloosa: University of Alabama,2004.

[ 6 ] Reeves S R. Oudinot The Alison Unit CO,-ECBM Pilot-A Reservair and Econanie Analysis. Interuational Coalised lethane Symposium [R]. Tuscaloosa: University of Alabama,2005.

[ 7 ] Oudinol AY. Schepers K C. Reeves S R. Gas injection and breakthrough trends as observed in ECBM sequestration pilot pro-jects and field demonstrutions[R].2007 Intemational Coalbed Methane Symposiurm,2007.

[ 8 ] Reeves S. Geologic Sequestration of CO, in Deep, Unmineable Coulleds. An Integrated Research and Commercial-Scale Field Demonstration Projeet[R].2008.

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