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ID:5345146
大小:3.17 MB
页数:8页
时间:2017-12-08
《渭河盆地前新生界分布的物探特征及油气成藏条件分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第25卷第4期地球物理学进展V01.25,No.42010年8月(页码:1280~1287)PR0GRESSINGEOPHYSICSAug.2010王红伟,刘宝宪,马占荣,等.渭河盆地前新生界分布的物探特征及油气成藏条件分析.地球物理学进展,2010,25(4):1280~1287,DOI:10.3969/j.issn.1004—2903.2010.04.016.WangHW,LiuBX,MaZR,eta1.Analysisofdistributionofgeophysicalcharacteristicsa
2、ndreservior-formingconditionsinthepre-CenozoicstrataintheWeihebasin.ProgressinGeophys.(inChinese),2010,25(4):1280~1287,DOI:10.3969/j.issn.1004—2903.2010.04.016.渭河盆地前新生界分布的物探特征及油气成藏条件分析王红伟,刘宝宪,马占荣,李磊,李燕,金文华(1.长庆油田公司勘探开发研究院,西安710018;2.低渗透油气Ikt勘探开发国家工程实验室,西安71
3、0018)摘要渭河盆地是新生代断陷盆地,由地质露头剖面及钻井揭示,盆地基底为太古界及元古界深变质岩系;沉积盖层以新生界为主,局部钻遇古生界地层,沉积岩最厚超过7000m.以往油气勘探程度较低,以新生界新近系和古近系为目的层,但未荻重大发现;对古生界分布及油气成藏条件的研究尤为薄弱,因而制约了渭河盆地的油气勘探.依据区域重力、航磁资料,结合近年完成的电法及地震勘探成果,划分出盆地内前新生界分布区域,初步确定在宝鸡一成阳断裂以北地区存在古生界,并提出盆地北部斜坡地区古生界的油气成藏模式,以利于今后的油气勘探.关键
4、词渭河盆地,前新生界,物探特征,油气成藏条件D0I:10.3969/j.issn.1004—2903.2010.04.016中图分类号P631文献标识码AAnalysisofdistributionofgeophysicalcharacteristicsandreservior-formingconditionsinthepre。cenozoicstrataintheweihebasinWANGHong—wei,LIUBao—xian',MAZhan—rong,LI—lei,LI—yan,JINWen—hua
5、(1.ResearchInstituteofExplorationandDevelopment,ChandqingOilfieldCompany,PetroChina,Xian710018,China2.NationalEngineeringLaboratoryofExplorationandDevelopmentofLowPermeabilityOil~GasFields,Xian710018,China)AbstractTheWeihebasinisacenozoicfaultbasin.Asreveal
6、edbyfieldoutcropsectionanddrilling,thebasinhasametamorphicrocksbasement0fArcheanandProterozoic,mostlycoveredwithCenozoic,andlocallyPaleazoicwiththelargestthinknessof7000m.DuetOthelowdegreeofprospectingpasttime,thetargetismainlyofNeogeneandPaleogene,butupton
7、ow,nosignificantdiscoverieshavebeenmade,andtheresearchondistributionofPaleozoicandreservoirformingconditionsisespeciallyweak,thusrestrictedtheoilandgasexplorationofthebasin.Basedonthestudyofthedataofregionalgravityandaeromagneicsurvey,aswellastheelectricity
8、andseismicprospecting,thepre-CenozoicdistributionareaofthebasiniSdivided.anditiSconfirmedthatPaleozoicsystemexistsinnorthoftheBaoji—Xianyangfault,andthepatternofoilandgasreservoir~formingisbroughtforwa
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