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ID:36778244
大小:1.86 MB
页数:7页
时间:2019-05-15
《廊固凹陷大兴砾岩体成因类型及其对油气的控制》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、石油勘探与开发20l2年10月PETR0LEUMEXPLoRATIoNANDDEVELoPMENTVb1.39NO.5545文章编号:1000-0747(2012)05—0545—07廊固凹陷大兴砾岩体成因类型及其对油气的控制刘晖,姜在兴2,张锐锋,周浩玮4,卢振权(1.中国地质科学院矿产资源研究所;2.中国地质大学(北京)能源学院;3.中国石油华北油田公司;4.中海油研究总院)基金项目:中央级公益性科研院所基本科研业务费专项基金项目(K1208);教育部油气沉积地质创新团队(IRT0864)摘要:综合地震、测井、岩心及试油等资料,对廊固凹陷古近系沙
2、三中下亚段深水期大兴砾岩体的成因类型、孔渗特征及油气产能进行研究。在沉积背景分析的基础上,依据岩心、地震相和测井相,建立了断槽重力流、颗粒流型近岸水下扇和泥石流型近岸水下扇3种砾岩体成因模式。断槽重力流砾岩体主要由杂基支撑的砾岩和颗粒支撑的砾岩组成,砾岩中各类次生孔隙发育;颗粒流型近岸水下扇砾岩体主要由颗粒支撑的砾岩组成,储集空间以砾内溶孔、晶间孔和裂缝为主;泥石流型近岸水下扇砾岩体主要由杂基支撑的砾岩组成,孔隙类型主要为砾内溶孔。不同成因的砾岩体,其储集层特征和油气产能存在明显差异,其中颗粒流型近岸水下扇砾岩体储集层的孔渗条件最好,油气产能最高,是
3、勘探的重要目标。图7表1参30关键词:廊固凹陷;大兴砾岩体;断槽重力流;近岸水下扇;颗粒流;泥石流中图分类号:TEl21文献标识码:AGenetictypesofDaxingconglomeratebodiesandtheircontrolsonhydrocarbonsintheLangguSag,BohaiBayBasin,EastChinaLiuHui,JiangZaixing,ZhangRuifeng,ZhouHaowei,LuZhenquanf1.InstituteofMineralResources,ChineseAcademyofGeol
4、ogicalSciences,Beijing100037,China;2.SchoolofEnergyResources,ChinaUniversityofGeosciences,Beijing100083,China;3.PetroChinaHuabeiOilfieldCompany,Renqiu062552,China;4.ResearchCenterofChinaNationalOffshoreOilCorporation,Beij'ing100027,China)Abstract:Thegenetictypes,porosityandperm
5、eabilitycharacteristics,aswellasoil—gasproductioncapacityoftheDaxingconglomeratebodiesinthelowerandmiddlesectionsofPaleogeneSha3Member,intheLangguSagoftheBohaiBayBasinarestudiedbycombiningvariousdatasuchasseismic,logging,coreanalysisandformationtesting.Threegeneticmodelsofcongl
6、omeratebodiesincludingfaulted—troughgravityflow,grainflowdominatednearshoresubaqueousfans,anddebrisflowdominatednearshoresubaqueousfansarebuiltbasedoncore,seismicandloggingphasesfiguredoutbyanalyzingthesedimentarysettings.Theconglomeratebodiesgeneratedduetofaulted—troughfloware
7、mainlycomposedofmatrixsupportedconglomeratesandgrainsupportedconglomerates,inwhichvariouskindsofsecondaryporesaredeveloped;theconglomeratebodiesgeneratedingrainflowdominatednearshoresubaqueousfansprimarilyconsistofgrainsupposedconglomerates,ofwhichthereservoirspaceismainlydisso
8、lvedporeswithingravels,intercrystalporesandfractures;t
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