点坝内部侧积层倾角控制因素分析及识别方法  

Controlling factor analysis and identification method of lateral accretion shale beddings angle in point bar

作　　者：周银邦[1,2] 吴胜和[1,2] 岳大力[1,2] 杜庆龙[3] 钟欣欣[1,2] 刘志鹏[1] 刘江丽[1] 白振强[3] 

机构地区：[1]中国石油大学资源与信息学院,北京102249 [2]中国石油大学油气资源与探测国家重点实验室,北京102249 [3]大庆油田勘探开发研究院,黑龙江大庆163712

出　　处：《中国石油大学学报（自然科学版）》2009年第2期7-11,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家“863”高技术研究发展计划项目(2008AA06Z206);教育部高等学校博士点专向科研基金项目(20060425004)

摘　　要：依据露头与现代沉积的构型研究成果,对点坝内部侧积层倾角的控制因素进行分析,并以大庆油田萨北北二西区为例,探讨识别地下古河道侧积层倾角的方法。研究表明:侧积层倾角主要受河床底形的影响,与河流的宽深比有很好的相关关系,相关系数可以达到0.9,河流的宽深比越大,侧积层倾角越小。侧积层倾角值可以先利用密井网资料得出河流的宽深比,再按照宽深比与侧积层倾角的定量关系推算得到。Controlling factors of lateral accretion shale beddings angle in point bar were studied by outcrop and modern deposition investigation. And taking the western of the northern second region in Sabei of Daqing Oilfield as an example, the method of identifying the angles of lateral accretion shale beddings underground was discussed. The results show that the lateral accretion shale bedding angles are mainly influenced by bed form, which have good relationship with the width-depth ratio of the channel and the correlation coefficient is 0.9. The bigger the width-depth ratio of the channel is, the smaller the angle of the steep part of lateral accretion shale beddings is, and vice versa. The angle of lateral accretion shale beddings can be obtained through the relationship of the angle and the width-depth ratio derived from close well data.

关 键 词：储层构型 侧积层倾角 点坝 废弃河道 

分 类 号：P512.2[天文地球—地质学]