英台油田萨尔图油层高分辨率层序地层与单砂体特征  

High-resolution sequence stratigraphic correlation and distribution characters of single sandbodies of Saertu reservoir in Yingtai oilfield,Songliao basin,China

作　　者：刘桂珍 鲍志东 周新茂[2] 孙敏[3] 

机构地区：[1]中国石油大学"油气资源与探测"国家重点实验室(北京),北京102249 [2]中国石油勘探开发研究院,北京100083 [3]中原油田井下作业处,河南濮阳457146

出　　处：《成都理工大学学报（自然科学版）》2010年第2期127-132,共6页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金资助项目(40272057)

摘　　要：应用岩心、油田开发区密井网资料,对松辽盆地英台油田白垩系姚家组第二和第三段(萨尔图油层)进行高分辨率层序地层对比,并对高频基准面旋回内单砂体的发育特征和空间展布规律进行研究。结果表明,姚家组第二和第三段总体上为一个长期基准面上升半旋回,其中包括1.5个中期旋回、10个短期旋回及若干个超短期旋回。单砂体在中期基准面旋回中呈现规律性分布,中期基准面旋回及A/S值的变化控制砂体分布样式。随着中期基准面的上升,A/S值的增大,单砂体平面上由底部连片状到中部宽带状,再变为上部窄条带状,砂体的厚度、宽度变小,连通性变差。中期基准面的旋回控制着河道砂和河口坝砂平面上的迁移。According to the data of the core and dense well log, in this paper a high-resolution sequence stratigraphic correlation is made to the Saertu reservoirs of Member 2 and 3 of Cretaceous Yaojia Formation in the Yingtai oilfield of Songliao basin. The results show that one long-term base-level ascending hemicycle （including 1.5 middle-term cycles, 10 short-term cycles and several super short- term cycles） is well developed. This indicates the change of the accommodation space to sediment supply ratios （A/S） in a vertical direction. The distribution patterns of the sandbodies change from sheet pattern at the bottom, through broad band pattern in the middle, to the narrow band pattern on the top of the middle-term. The middle-term base-level＇s ascending cycle controls the migration of the sand bodies of channels and mouth bar.

关 键 词：高分辨率层序地层 基准面旋回 单砂体 A/S值 

分 类 号：TE121.34[石油与天然气工程—油气勘探]