MOE Key Lab of Coalbed Methane Resources and Reservoir Formation Process,China University of Mining and Technology School of Resources and Geosciences,China University of Mining and Technology

为了对黔西-滇东地区煤层气有利区块进行优选,以6个主要区块为研究对象,选取资源丰度、含气饱和度、平均含气量、含气面积、煤层总厚度、Ro,max、平均渗透率、兰氏体积、视储层压力和地应力10个评价指标,采用主成分分析法,在众多指标中提取3个主成分,分别为煤储层物性因素、煤储层能量因素、煤层气资源因素,依据主成分得分加权求和获得各区块的综合得分。研究表明:织纳矿区的煤储层物性条件较好,盘县矿区的资源条件和煤储层能量条件较好,属于煤层气开发的最优区块;水城矿区和六枝矿区的资源条件和煤储层能量条件较好,属于煤层气开发的较优区块;老厂矿区和恩洪矿区总体上也受煤储层能量因素和资源因素控制,但煤储层物性条件较差,符合"小而肥"的特点,是煤层气开发的一般区块。

in order to optimally select a favorable calbed methane block in westen Guizhou and eastern vunnantaking six major bocksas the stutyobject.therewere ten evaluation indexes of resource abundance,gas saturation,.average gas content gas beaing area.oatalseanm thickness. o.m2ax.avrage permeatiltyLlangmur olume.reservoir pressure and geostress selected. The Principal Component Analysis Method was appied to pick up three pincipal components from the muti- indexesand the three principal components were the property factor of the coal reservoirthe energy factorof the coal reservofr and the coabed metran resouce factor.Acoding to the weight sumn of the principal component score,the comprehensive score of each block was obtained.The study showed that the property contions of the coal reservoir in Zhin Mlining Area was goo. the resourcecontion and the coal reservoir energy co dtin of Panxian Mlining Area were ood and could be the optimizedblock ofcaled methane development.The resource condition and the cal reservoir energy condition of Shuicheng Mining Area and Liuzhi Mlning Area were good and could be optimized blocks of the coalbed methane development.L.aochang Mining Area and Emhong Mining Area were generalls controld by the coalreservoir enegyfactor and the resoure factor.But the coal reservoio property condition of the two mining areas was poo.which net the features of "small and faf and could be generablocks of the coalbed methane development.

国家科技重大专项资助项目(2016ZX05044001)；国家自然科学基金资助项目(41272178,41572140)；