【摘 要】
：
墨西哥湾盆地为世界著名的含盐被动陆缘盆地,油气资源极为丰富,但是该区域受到复杂盐构造的影响,油气富集规律复杂,对盐相关油气输导体系及成藏模式认识不清,制约了油气勘探部署.基于三维地震、钻井、测井等资料,利用蚂蚁追踪等地球物理方法,研究了墨西哥湾南部Burgos盆地和Sureste盆地典型油气输导体系的静态组合样式及动态输导效率,明确了二者之间油气成藏模式的差异性.研究表明,Bur-gos盆地主要发育逆冲挤压断层,断层组合样式以“Y”型和反“Y”型、背冲型和叠瓦型为主;逆冲断层在中晚始新世—渐新世活动,与烃
【机 构】
：
中国海洋石油国际有限公司北京 100028
论文部分内容阅读
墨西哥湾盆地为世界著名的含盐被动陆缘盆地,油气资源极为丰富,但是该区域受到复杂盐构造的影响,油气富集规律复杂,对盐相关油气输导体系及成藏模式认识不清,制约了油气勘探部署.基于三维地震、钻井、测井等资料,利用蚂蚁追踪等地球物理方法,研究了墨西哥湾南部Burgos盆地和Sureste盆地典型油气输导体系的静态组合样式及动态输导效率,明确了二者之间油气成藏模式的差异性.研究表明,Bur-gos盆地主要发育逆冲挤压断层,断层组合样式以“Y”型和反“Y”型、背冲型和叠瓦型为主;逆冲断层在中晚始新世—渐新世活动,与烃源岩排烃期匹配较好,有利于油气成藏,其中“Y”型和反“Y”型断层组合样式输导效率最高;Sureste盆地主要发育盐侧翼-伴生断层复合输导体系和盐侧翼-砂岩层复合输导体系,盐底辟在中新世开始活动,与区域烃源岩排烃期匹配较好,有利于油气运聚,其中主动盐底辟侧翼裂缝更为发育,输导效率更高.在此基础上,建立了Burgos盆地和Sureste盆地油气差异成藏模式,即Burgos盆地主要表现为近源垂向、逆冲断层输导的油气成藏模式,Sureste盆地主要表现为近源垂向、盐底辟和伴生断裂-砂岩层复合输导的油气成藏模式,从而明确了有利的勘探目标类型,对于相似含盐被动陆缘盆地的油气勘探具有重要的指导意义.
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