Reservoir Evaluation Of Coal Gas Formation In He Shun Block Of Qing Shui Basin

Heshun block is located in the east wing of the northern Qinshui,since 2008,East China branch in the southeast part of the area has deployed more than 16 appraisal wells and the implementation of 2D seismic profiles,obtained the geophysical data and geological parameters of foundation.But there still exist in CBM well drainage effect is poor,the relationship between geological structure and coal seam gas enrichment and the output of the unknown,the relationship between density and the coalbed methane enrichment degree of the problem is unclear.Based on this,the establishment of the coalbed methane accumulation favorable area evaluation system and relevant standards,to carry out the research on the relationship between the enrichment degree of gas density and coal seam,to establish the relationship between density and coalbed methane enrichment degree version of reasonable;the detailed interpretation,identify areas of coal reservoir buried depth,thickness,evaluation and prediction of coal body structure.Gas abundance;the region is established by AVO model and attribute analysis of geophysical data,technical adaptability analysis of coal seam gas sensitive elastic parameters of coal seam gas;sensitive elastic parameters of profile and the AVO attribute section analysis,and calibration and prediction of abnormal areas;finally,according to the coal seam gas advantageous accumulation area evaluation system and related standards.Coalbed methane enrichment advantageous area selected in Heshun block.