欢迎来到天天文库
浏览记录
ID:48009439
大小:1.61 MB
页数:9页
时间:2020-01-13
《中国南方海相残留盆地勘探风险分析与选区评价.pdf》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35卷第1期石油察量参沾届Vo1.35.No.12013年1月PETROLEUMGEOLoGY&EXPERIMENTJan.,2013文章编号:1001-6112(2013)0l-0009—08DOI:10.11781/sysydz20130102中国南方海相残留盆地勘探风险分析与选区评价徐政语,姚根顺,黄羚,董雍,王鹏万,俞广(中国石油勘探开发研究院杭州地质研究院,杭州310023)摘要:中国南方发育有下海上陆的多旋回生储盖组合,总体形成了震旦系~下古生界及中一上古生界2套大的海相成藏组合:平面上形成以江绍一十万大山断裂为界的南、北两大成
2、藏区,其中北区发育2套组合,南区发育中~上古生界1套组合。平面上古油藏与油气显示分布受古隆起控制,油气成藏经历了加里东一海西期生油、印支期裂解成气、燕山一喜马拉雅期调整与改造3期以上事件。现今保存的海相油气藏具有明显的残留特征。综合分析认为,南方海相普遍存在勘探程度低、技术尚不成熟、油气成藏规律认识局限等方面的风险,其中常规油气勘探风险相对较高,海陆叠合盆地勘探风险相对较低,非常规页岩气勘探风险最低,并由此对南方海相进行了评价与有利区带优选。关键词:油气勘探;风险分析;选区评价;海相残留盆地;中国南方中图分类号:TEl32文献标识码:ARis
3、kanalysisandplayevaluationofmarineresidualbasinsinSouthChinaXuZhengyu,YaoGenshun,HuangLing,DongYong,WangPengwan,YuGuang(HangzhouResearchInstituteofPetroleumGeology,PetroChina,Hangzhou,310023)Abstract:Multiplecyclesofhydrocarbongeneration,reserveandcapassemblageswithseaatthe
4、bottomandcontinentatthetopdevelopedinSouthChina.Thereweremainly2setsofmarineaccumulationassemblagesin—cludingSinian—theLowerPaleozoicandtheMiddle—UpperPaleozoic.Onplanemap,thestudyareawasdividedinto2accumulationzones(thesouthernoneandthenorthernone)bytheJiangshao—Shiwandash
5、anFault.Intheno~hernaccumulationzone,2setsofaccumulationassemblagesdeveloped,whileinthesouthernaccumulationzone.onlytheMiddle—UpperPaleozoicassemblageexisted.Thedistributionofancientreservoirsandoil—and-gasshowswascontrolledbyancientuplifts.Petroleumaccumulationexperiencedo
6、ver3stagesoftectonicevents,forexample,oilgeneratinginCaledonian—Hercynianstages,oilcrackingtogasinIndosinianstage,andadjustinganddeforminginYanshanian—Himalayanstages.ThepresentmarinereservoirsinSouthChinahavedistinctiveresidualfeatures.Theirexplorationdegreesarelow,techniq
7、uesarenotmature,andtheknowledgeaboutaccu—mulationrulesisrestricted.Therisksarehigherfornormalpetroleumexplorations,lowerformarinesuperim—posedbasinexplorations,andthelowestforunconventionalshalegasexplorations.ThemarinestratainSouthChinawereevaluatedandthefavorablezonesfore
8、xplorationwerepointedout.Keywords:0ilandgasexploration;riskanalysis;evaluationofpl
此文档下载收益归作者所有