Coalbed Methane Accumulation Control Factors and Exploration Direction in Nayong Buzuo Block
Based on a large number of coal geological exploration data,in-depth analysis of the study area of the metamorphic degree of coal,coal,poroperm characteristics,the coal seam roof and floor block sex,coal seam buried depth,structure and hydrogeological condition such as control factors,the coalbed methane volume method is used to estimate the CBM geological resources in the study area,and further puts forward the next step prospecting direction.The results show that the hydrogeology and high density coal seam top and bottom plate in the study area play a sealing and gas control role on coalbed methane.The depth of coal seam,the quality of coal rock and the degree of coal metamorphism are the main factors that cause the difference of gas content in each main coal seam.It is estimated that the CBM resources in the study area are 68.82×108 m3,which is a medium-sized gas reservoir.In addition,block 1 is selected as a Grade I sweet spot,which can be used as a preliminary exploration development zone in the study area.
coal bed methane(CBM)control factors of accumulationstructurehydrogeologyexploration direction
NETL
NSTL
万方数据
