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1、第43卷第2期煤炭科学技术Vol．43No．22015年2月CoalScienceandTechnologyFeb.2015临兴地区深部煤层气及致密砂岩气资源潜力评价121211谢英刚,孟尚志,高丽军,孙新阳,段长江,王海平(1.中海油能源发展股份有限公司工程技术分公司,天津300457;2.中联煤层气有限责任公司,北京100011)摘要:针对鄂尔多斯盆地东缘临兴地区主煤层埋深较深、致密砂岩产气层数较多的特点,分析了区内煤储层特征,评价了深部煤层气及致密砂岩气的资源潜力。研究表明,区内构造简单,以单斜构造为主,东中部局部地区发育断裂
2、,煤储层相对稳定,储层压力呈欠压-常压状态,有利于煤层气的富集;深部5号和9号煤层以半亮型的肥煤到焦煤为主,储层物性较好,且9号煤层资源潜力较大,是深部煤层气勘探的主要煤层;致密砂岩展布主要受控于煤系地层沉积特征,在北部地区相对发育。研究认为,该区有利于深部煤系煤层气与致密砂岩气多层共采,而中南部地区为煤层气单采有利区。关键词:深部煤层;煤储层;煤层气;致密砂岩气;资源潜力中图分类号:TE132．2文献标志码:A文章编号:0253-2336(2015)02-0021-04Assessmentsonpotentialresources
3、ofdeepcoalbedmethaneandcompactsandstonegasinLinxingArea121211XIEYing-gang,MENGShang-zhi,GAOLi-jun,SUNXin-yang,DUANChang-jiang,WANGHai-ping(1.EngineeringandTechnologyBranch,CNOOCEnergyTechnologyandServicesLimited,Tianjin300457,China;2.ChinaUnitedCoalbedMethaneCorporatio
4、nLimited,Beijing100011,China)Abstract:AccordingtothedeepdepthofthemainseaminLinxingAreaateastedgeofOrdos,manygaslayersfeaturesofthesandstone,thepaperanalyzedthecoalreservoirfeatureswithintheareaandevaluatedthepotentialresourcesofthedeepcoalbedmethaneandthecompactsandst
5、onegas.Thestudyshowedthatthestructurewithintheareawassimpleandmainlywasthemonoclinicstructure.Thedevelopmentofthestructurewasbrokeninthesomeareaofthemiddleeastpart,thecoalreservoirwasrelativestableandthereservoirpressurewasinanunder-pressuretonormalpressurestateandwasf
6、avorabletotheenrichmentofthecoalbedmethane.ThedeepNo.5andNo.9seamsweresemi-brighttypefatcoaltocokingcoalmainly,thereservoirphysicalpropertywasquitewellandtheresourcespo-tentialofNo.9seamwashighandwasthemainseamforthedeepcoalbedmethaneexploration.Thelayoutofcompactsands
7、tonewascon-trolledbythesedimentaryfeaturesofthecoalmeasurestrataandwasrelativelydevelopedinthesouthpart.Thestudyheldthattheareawasfavorabletothemultilayersimultaneousminingofthedeepcoalmeasurecoalbedmethaneandcompactsandstonegasandamongthearea,butthemiddleandsouthpartc
8、ouldbeafavorablezoneforasingleminingofthecoalbedmethane.Keywords:deepseam;coalreservoir;coalbedmethane;compactsandsto
