保山盆地永铸街凸起羊邑组三段砂体时空展布规律研究  

Time-space distribution of the sands in the third member of Yangyi formation,Yongzhujie uplift,Baoshan Basin

作　　者：张连进[1] 彭军[1] 耿梅[2] 汪彦[1] 付春艳[1] 

机构地区：[1]西南石油大学,四川成都610500 [2]中油新疆油田公司,新疆克拉玛依834000

出　　处：《特种油气藏》2008年第4期28-32,共5页Special Oil & Gas Reservoirs

基　　金：四川教育厅自然科学重点项目(07ZA139);西南石油大学创新基金(CXJJ27069)共同资助

摘　　要：保山盆地新近系羊邑组二段、三段为保山气田主要的含气层段。根据沉积学和高分辨率层序地层学理论,对永铸街凸起羊邑组三段进行砂组、小层砂体和单砂体的划分,并以单砂体为单元绘制砂体厚度等值线图、砂地比等值线图及沉积微相平面展布图,从而完成对羊邑组三段进行砂体时空展布规律研究。研究表明,羊邑组三段砂体空间展布及连通情况明显受控于沉积微相的展布,砂体演化具有自下而上厚度逐渐减小、连通性变差、分布范围向物源方向退缩的特征。The second and third members of Neogene Yangyi formation in Baoshan Basin are the main gas - bearing sections in Baoshan gas field.The third member of Yangyi formation in Yongzhujie uplift is divided into sand units,sub - units and single sands according to the principles of sedimentology and high - resolution se- quence stratigraphy.Sand thickness isogram,sand -gross isogram and the areal distribution of sedimentary mi- crofacies are mapped for single sands to study time - space distribution of sands in the third member of Yangyi formation.The study shows that the spatial distribution and connectivity of the sands are obviously controlled by sedimentary facies.The evolution of sands is characterized from below by gradual thinning,connectivity worse- ning,and distribution shrinking to source direction.

关 键 词：砂体展布 层序地层 沉积微相 羊邑组三段 保山盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]