伊宁凹陷二叠纪古构造演化与油气关系

《伊宁凹陷二叠纪古构造演化与油气关系》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、钟～I奸利I，蒲一海0，高I1I『林¨l，邱

2、u芒／⋯疆(1西安科技大学地质与环境工程学院，西安710054；2西北大学大陆动力学国家重点实验室，西安7100693中国石化西北油田分公司，乌鲁木齐830011)摘要：伊宁凹陷构造变形强烈，构造演化认识不清。利用地震、钻井资料恢复了伊宁凹陷二叠纪古近纪古构造面貌，以及期问所遭受的构造剥蚀情况，在此基础上对二叠系生油岩可能的油气运聚进行预测后指出，伊宁凹陷在三叠纪由断陷转为凹陷。二叠纪古近纪伊宁凹陷整体上北低南高、西低东高；二叠纪伊宁凹陷北部为深陷带，南部、东部为斜坡区，且南坡较东坡陡；三叠

3、纪伊宁凹陷构造变得低缓，凹陷中央次凸带发育北西西向延伸的小凸起；侏罗纪伊宁凹陷沉降中心向北东方向转移，南坡变缓，东坡变陡。凹陷中部的宁4井附近的断凸、伊2井西的断鼻、英塔木南的断鼻均为为铁木里克组油气的有利聚集区。关键词：伊宁凹陷；二叠纪；构造演化；铁木里克组；油气聚集文章编号：10013873(2014)O1002905中图分类号：TEl112文献标识码：APaleostructuralEvolutionandRelationshipwithHydrocarbonofPermianinYiningSagZHONGHongli，PURe

4、nhai，GA0Shanlin，QIUFangqiang(1CollegeofGeologyandEnvironmentalEnee~ng，Xi’anUniversityofScienceandTeehnolog7，Xi’an，Shaar~xl710054，China；2StateKeyLaboratmTofContinentMDynamics，NorthwestUniversity，Xi’an，Shaar~xl710069，China；3NorthwestOilfieldCompany，Sinopee，Urumqi，Xinjiang8

5、30011，China)Abstract：ThetectonicdeformationinYiningsagisSOs~ongthatleadstounclearunderstandingsofthetectonicevolutionuptonowThispaperrestoredthepaleoteetor~efeaturesofPermianPaleogeneinYiningsagbyl／leansoftheseismicanddrillingdata，ineludingthede—nudationthickness，bywhich

6、predietedtheprobablehydroearbonmigrationandaccumulationforthePermiansouroerocksTheresultshowsthatYiningsagwasconvertedfromfaultdepressionintosaginT~assie；thesag’sshapeappearslowinnorthandwestandhighinsouthandeastingeneral0mPermiantoPaleogene；inthePermian．thenorthernparto

7、fthesagwasadeepriftedbelt．thesouthandeastpartswereinslopeareathatlookslikesteeperinthesouththanintheeast；intheTriassie，thesagstrueturebeeamelower，thesub—swellzoneintheeentralsagoccurredSOl／lesmalswelsextendingalongNWW：intheJurassic．thesubduetioneenterofthesagtransferredt

8、o—wardNW，appea~ngflatinthesouthslopeandsteepintheeastoneItisconcludedthatthefaultswellnearWellNing一4andfaultnoseatthewestofWellYi一2ineenterofthesagandfaultnoseinthesouthofYingtamucouldbethefavorablehydroearbonaccumulationareasofTiemulikeformationinYiningsagKWords：Yinings

9、ag；Permian；strueturalevolution；Tiemulikeformation；hydrocarbonaccumulation伊犁盆地面积约386x10km，其东部位于中国达到了20％以