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ID:37345648
大小:2.50 MB
页数:11页
时间:2019-05-21
《塔里木盆地麦盖提斜坡构造演化及油气地质意义》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、学兔兔www.xuetutu.com-5天乞地第32卷第54期OIL&GASGEOLOGY2011年12月文章编号:0253—9985(2011)06—0909—11塔里木盆地麦盖提斜坡构造演化及油气地质意义张仲培,刘士林,杨子玉,李建交(1.中国石化石油勘探开发研究院,北京100083;2.中国石油大港油田分公司勘探开发研究院,天津300280)摘要:为分析塔里木盆地麦盖提斜坡的有利成藏条件,并提出下一步有利区带和部署建议,从地震和钻井资料入手,运用叠合盆地构造解析方法,在动态分析麦盖提斜坡形成过程
2、的基础上,分别研究了东、西两段的构造带特征与成因,并阐述其油气勘探意义。研究认为,多期构造演化与东西差异演化是东、西两段油气成藏条件、运聚背景和重点勘探层系明显不同的关键。西段处于斜坡背景上的海西晚期构造带,保存条件好,与断裂紧邻的上倾方向的上古生界岩性体是控制油气成藏与富集的关键因素。斜坡东段位于和田古隆起,玉北1井区构造处于加里东中、晚期与海西晚期的构造应力叠加区,更有利于奥陶系岩溶缝洞型储层的发育。玉北1井东部潜山带下奥陶统暴露区上覆一定厚度的地层,对溶蚀孔、洞、缝的有效保留更有利,也值得选择性
3、探索。关键词:差异构造演化;构造带;碳酸盐岩;油气勘探;麦盖提斜坡;塔里木盆地中图分类号:TEl21.2文献标识码:ATectonicevolutionanditspetroleumgeologicalsignificancesoftheMaigaitiSlop,TarimBasinZhangZhongpei,LiuShilin,YangZiyu,LiJianjiao(1.S1NOPECResearchInstituteofPetroleumExplorationandDevelopment,Beif
4、ing100083,China;2.ResearchInstituteofPetroleumExplorationandDevelopment,PetroChinaDagangOiildCompany,Tianjin300280,China)Abstract:InordertoanalyzethefavorableconditionsofhydrocarbonaccumulationandidentifyfavorableplaysofMaigaitislopinTarimbasin,weusedth
5、etectonicanalyticalmethodofsuperimposedbasinstostudythecha-racteristiesandgenesisoftheeasternandwesternsegmentsoftheslopeanddiscussedtheirhydrocarbonexplo—rationsignificancesbasedonintegrationofseismicandwelldataandanalysisofthedynamicevolutionofMaigait
6、iSlope.Multi-stageevolutionanddifferentialevolutionarethekeyfactorscausingtheobviousdifferencesbetweentheeasternandwesternsegmentinrespectsofhydrocarbon,migrationandaccumulationconditionsandmainexplorationtargets.ThewesternsegmentintheLateHercyniantecto
7、nicbeltshasgoodpreservationcondi—tions,andtheup—dipupperPaleozoiclithologicbodynearthefaultsarekeyfactorcontrollinghydrocarbonaccu—mulationandenrichment.TheeasternsegmentislocatedintheHetianpaleo—uplift,whereYubei一1wellblockisplacedinanareawiththeMiddle
8、andLateCaledoniantectonicstresssuperimposingwiththeLateHercyniantectonicstress,providingmorefavorableconditionsfortheOrdovieianfractured-vuggyreservoirdevelopment.TheLowerOrdovicianexposureintheburiedhillzonetotheeastofYubei一1wel
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