高煤阶煤储层非均质性耦合模型及煤层内含气量影响因素权重分析  

Coupling Model of Reservoir Heterogeneity and Weight Analysis of Gas Content Effective Factors in High-rank Coal Reservoir

作　　者：王攀[1] 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《煤炭技术》2018年第1期51-54,共4页Coal Technology

基　　金：国家重大科学仪器设备开发专项资助项目(2012YQ030126);国家自然基金煤炭联合资助项目(U1261203);中国地质调查局资助项目(12120115102101)

摘　　要：煤储层非均质性的正确评价对煤层气勘探开发具有重要意义。依据寺河矿区煤芯实验分析数据,对高煤阶煤储层非均质性耦合关系及含气量受储层参数影响权重展开研究。结果表明:煤储层参数非均质差异明显,矿物质含量、吸附时间和总显微裂隙密度的非均质性相对较强,含气非均质性与总宏观裂隙密度、矿物质含量、最大镜质体反射率及吸附时间的非均质性耦合性较强;各储层参数对含气量的影响权重大小分布波动较大。The correct evaluation of heterogeneity on coal reservoir is of great significance to the exploration and development of coalbed methane. Research is carried out for the coupling relations in the heterogeneity of high-rank coal reservoirs and the weights of coal reservoir parameters influence on coal gas content based on the data by experimentation analysis of coal cores which collected from Sihe mining area. The results indicate： the heterogeneity of coal reservoir parameters is obvious, and the heterogeneity of mineral content, adsorption time and total density of micro-fracture are stronger. The coupling mechanism between uneven coal gas and heterogeneity of total density of macro-fracture, mineral content, maximum vitrinite reflectance and adsorption time are stronger. Power distribution of reservoir parameters on gas content have varied greatly.

关 键 词：高煤阶 储层参数 非均质性 变异系数 

分 类 号：TE133[石油与天然气工程—油气勘探]