Adsorption Behavior and Abundance Predication Model of Deep Coalbed Methane
详细信息
- 责任者：Zhao Lijuan (Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process ; CUMT ; Ministry of Education ; China University of Mining and Technology ; Xuzhou 221116 ; China) ; Qin Yong
- 刊名：Geological Journal of China Universities
- 出版年：2012
- 卷期：18(3)
- 关键词：煤层气 ; coalbed gas ; 吸附作用 ; adsorption
- 页码：p.553-557
- 图表：2 illus., 5 illus., 14 refs.
- 分类号：1003
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
Occurrence of coalbed methane （CBM） is different from that in shallow seam, and a new method is demanded to predicate deep CBM content. Based on the isothermal methane adsorption experiments of coal samples under various temperature and pressure, geological controls of coal adsorption constants was discussed and a predicting method for deep CBM content was established with principal component analysis in a case of the main coal seam in the eastern Ordos Basin. A predicating model of deep CBM content was set up based on the Langmuir equation combining with gas saturation. Using the models, deep CBM content in the eastern Ordos Basin was predicted.