• 责任者：Wang Xuben (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Chen Jinchao
• 刊名：Chinese Journal of Geophysics
• 出版年：2013
• 卷期：56(12)
• 关键词：煤层气 ; coalbed gas ; 可控源音频大地电磁法 ; controlled-source audio magnetotelluric methods ; 沁水盆地 ; Qinshui Basin
• 页码：p.4310-4323
• 图表：20 illus., 2 tables, 32 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

     On the basis of the analysis of the relationship between the coalbed methane （CBM） enrichment region and groundwater and geological structure in the north Qinshui basin, the magnetotelluric method was employed to detect underground water distribution as well as the favorable and unfavorable geological factors which pose impact on coalbed methane enrichment, and indirect detection of the CBM relative enrichment region. According to the CBM enrichment geological model and designed the geophysical model, using the finite element method to carry out the forward modeling, this work discussed the feasibility of the detection mode, based on which we selected the north Qinshui basin CBM exploration area to carry out the controlled source audio magnetotelluric （CSAMT） technological experiment. Coupled with the geological, drilling and logging data, we have completed the experiment data processing and interpretation. The results show that the use of CSAMT method can effectively obtain electrical structure of strata, inferwater content, and water-rich areas. Combining conditions and influencing factors, it is possible CBM enrichment region. with the favorable to achieve indirect enrichment CBM geological prediction of the favorable.