我国煤层气赋存特点及抽采技术研究一一祁猛专题讲演专题讲演课程专题演讲学生姓名：指导教师：专业班级：学号：时间：综合成绩：祁猛我国煤层赋存特点及抽采技术研究我国煤层气赋存特点及抽采技术研究摘要中国煤层气资源十分丰富，特点表现为含煤盆地多、含煤层系多、煤种全、煤层气藏类型多。埋藏深度浅于1000m的资源量达14.27X10⑵3是目前煤层气开发的主要对象。当前国家配套扶持政策基木到位,是我国发展煤层气的重要机遇期。加快煤层气发展，首先要认识其赋存特点，选准富集区，探好日标区。近年來的研究成果表明，小国煤层气主要富集在5类地区：区域含煤区构造高点、直接盖层稳定分布的上斜坡区、凹小隆构造的火山岩活动区、浅层封闭条件好的低煤阶与厚煤层发育区、断裂活动次生割理发育区。口前，我国尚处于煤层气开发的初期,勘探开发前景广阔。通过对不同煤阶具体指标的分析并结合上述5类富集区的特点,提出了I类日标区6个、II类日标区5个、川类日标区7个。其小沁水盆地南部晋城地区、鄂尔多斯盆地东南部吉县一韩城地区、准喝尔盆地东南部昌吉一人井地区是近期3个千亿立方米煤层气储址规模的有利区；II类和III类日标区将成为中国煤层气中长期发展的重要领域。关键词中国煤层气富集区勘探开发日标区赋存特点资源暈2专题讲演Abstract:Therearerichcoalbedmethane(CBM)gasresourcesinChina,featuredbysubstantialcoal-bearingbasins,variouscoal-bearingformationsandlayers,full-scalecoaltypes,andnumerousCBMgasreservoirs.TheCBMreserveswithaburialdepthoflessthan1000rnareupto14・27tcm,whichbecomesthemainexploitationtarget・UnderthecurrentsituationthatChinahasunveiledsomesupportingpolicies,itishightimethatweshouldspeeduptheCBMdevelopmentthroughgettingafu11knowledgeofCBMoc-currencefeatures,accuratelyselectingtheCBMenrichmentzones,anddr订lingwithsuccessatthetargetzones.Accordingtothea-chievementsinrecentyears,5majortypesofCBMenrichmentzonesareconeludedasfollows:structuralhighofsomeregionalcoal-bearingareas,acclivityareaswithanevendistributionofdirectsealingrocks,activevolcanicareasinthestructureofupliftinde-pression,developedareaswithlowrankcoalsandthickcoalbedsundergoodsealingconditionsintheshallowformations,andawell-developedsecondarycoa1cleatsareasformedinfauItactivities.ThereisalargepotentialintheCBMdevelopmentwhichisstillatinitialstageinpresent.China.Throughconcreteanalysisontheindexesofdifferent-rankcoals,incombinationwiththeabove-mentioned5majorCBMenrichmentzones,wepresent6type-I,5type-II,and7type-IIItargetzones,amongwhichthelattertwotypeswi11betheimportantareasforthemiddle~andlong-termCBMdevelopmentinChina;theformeroneisrepresentedbythreelargecommercia1-seaIeCBMzoneswith300bcmreservesincludingtheJinchengdistrictinthesouthernQinshuiBasin,theJixian-HanchengdistrictinthesoutheasternOrdosBasin,anclChangji-DajindistrietinthesoutheasternJungarBasin.Keywords:China,coalbedmethanegas,enrichmentzone,expIoralion,exploitation,targetzone,occurrence,resourcereservesDOI:10.3787/j.issn.1000-0976.2010.11.0013祁猛我国煤层赋存特点及抽采技术研究日录摘要..................................................................................................................................................................................21.我国煤层气赋存特点••••••••••••••••••••••••••••・・・・・・・・・・:52.中国煤层气的主要聚集类型................................................................................3.结论....................................................................................................................................................................
