潜江凹陷蚌湖向斜周缘油气运聚特征与岩性圈闭评价

《潜江凹陷蚌湖向斜周缘油气运聚特征与岩性圈闭评价》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、第30卷第2期石油学报Vo1．3ONo．22009年3月ACTAPETROLEISINICAMar．2009文章编号：0253—2697(2009)02—0183—06潜江凹陷蚌湖向斜周缘油气运聚特征与岩性圈闭评价吴东胜吴剑张玉清何幼斌罗进雄(长江大学地球科学学院湖北荆州434023)摘要：蚌湖向斜是潜江凹陷主要的生油洼陷，潜三、潜四段烃源岩均已成熟生油，向斜东、南斜坡带发育大量砂岩上倾尖灭型岩性圈闭，油气呈面状补给方式进入渗透性砂岩输导体，并在浮力驱动下发生运移。油气的运移和聚集主要受3个因素的控制：①构造格局控制了油气的运移趋势；②渗透性砂岩输导体与运移趋势的空间配套决

2、定了油气运移路径的实际分布；③每个岩性圈闭均有运移路径网络所限定的油气汇聚范围，其源岩体积和生、排烃性能控制了圈闭含油气性。在同一个运聚组合中，油气运聚范围的面积与圈闭含油气性呈正比关系。以生油洼陷内油气运移路径的预测技术为基础，可对岩性圈闭的含油气性作出较为确切地评价。关键词：潜江凹陷；生油洼陷；油气运移；岩性圈闭；含油气性中图分类号：TEl12．12文献标识码：ACharacteristicsofpetroleummigration—accumulationandpetroliferouspropertyoflithologictraparoundBanghuSyncl

3、ineinQianjiangDepressionWUDongshengWUJianZHANGYuqingHEYoubinLUOJinxiong(CollegeofEarthScience，YangtzeUniversity，Jingzhou434023，China)Abstract：BanghuSynclineisthemainsourcesaginQianjiangDepression．ThesourcerocksofEq3andEq4aroundBanghuSynclinehasmaturedandgeneratedoilandgas．Manyupdippinch—ou

4、ttrapsoflithologicsandstonearedevelopedonthesouthernandeasternslopesaroundBanghuSyncline．Thepermeablesandstonesacceptedhydrocarboninawayofsurfacesupply，andoilandgasmigra—tionwasdrivenbybuoyancy．Hydrocarbonmigrationandaccumulationintheseslopesweremainlycontrolledbythreefactors．Thetectonicfr

5、ameworkcontrolledthemigrationtrendsofoilandgas．Thehydrocarbonmigrationpathswerecontrolledbyspecialdispo—sitionofpermeablesandstoneconductorandmigrationtrends．EachlithologictrapcorrespondingtOtheconvergenceareawaslimitedbyoilandgasmigrationpathnetwork．Thepetroliferouspropertyoflithologictra

6、pwascontrolledbyvolumeofsourcerocksandhy—drocarbon-generatingandhydrocarbon-expulsingperformancesofcorrespondingsourcerock．Theconvergenceareawasinpositiveproportionwiththepetroliferouspropertyoflithologictrapinthesamecombinationofpetroleummigrationandaccumulation．Onthebasisofpredictiontech

7、nologyforhydrocarbonmigrationpathinsourcesag，thepetroliferouspropertyoflithologictrapcouldbecor—rectivelyevaluated．Keywords：QianjiangDepression；sourcesag；oil—gasmigration；lithologictrap；petroliferousproperty岩性油藏的形成机制和分布规律复杂，勘探难度应用渗流力学数值模拟_1、流线法模拟、侵入渗逾和风险较大，其成藏