Guizhou Provincial Engineering and Technology Research Center of Coalbed Methane and Shale Gas

为了探究黔西松河井田煤层气勘探开发潜力,采用多种测试手段,系统分析了松参1井的煤储层在孔隙结构、压力系数、含气性、渗透性等方面的差异,综合评价了该区煤层气开发地质条件。结果表明:该井多煤层由浅至深变质程度增加,渗流孔隙孔容递减;压力系数及含气量在垂向层位上呈现显著波动变化,可能存在多个含气系统;上部煤层试井渗透率高于下部煤层,个别煤层具有超压、过饱和及高地温等特征。区内资源条件优越,但纵向储层物性差异明显,煤层气开发选层与压裂、排采等仍须进一步研究。

in order to study the exploration development potential of the coalbed methane in Songhe Mine Fied West Cuizhou.several measurement and test means were applied to systematically analyze the differences of the porestructre,pressure coicient gas bearing.permeatility and others of the coalresevir in SongcanN.1 Well and comprehensively evaluate the geolgic conditon of the calbed methane development inthe mining re . Theresults showed that the netamophic degree of the muilit seams in the mine was increased from the shallow depth to the deep depth and the seepage pore volume was decreased.The pressuece Fic nt and thagas bearing volume were fucuated obviously at the verical layer direction and there were several gas eaing systens.The permeabiliyof the top seam in the test wellwas igher than the boom seam and some seam had the overpressure,versaturation.and high geothermal temperature and otherfeatues. he resource condtions with the mining area were favorable and the physical property oiferences of thereservoirs were obious i ongitude A futher stucy should be conducted on the strata selection,fracturing,mingling and others of the coalbed methane development.

贵州省科技重大专项资助项目(黔科合重大专项字[2014]6002号)；中国地质调查局资助项目(12120114020201-05)；国家自然科学基金资助项目(41402140；51204162；41402135)；