东营凹陷古近系红层砂体有效储层的物性下限及控制因素  

Petrophysical parameter cutoff and controlling factors of effective reservoir of red beds sandbodies of Paleogene in Dongying depression

作　　者：王健[1] 操应长 高永进[2] 刘惠民[2] 刘晓丽 唐东[2] 

机构地区：[1]中国石油大学地球科学与技术学院,山东青岛266555 [2]中石化胜利油田地质科学研究院,山东东营257015

出　　处：《中国石油大学学报（自然科学版）》2011年第4期27-33,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家油气重大专项课题(2008ZX05051-02);国家自然科学基金项目(40972080);教育部新世纪优秀人才支持计划(NCET-06-0604)

摘　　要：依据试油、压汞、物性等资料,综合利用分布函数曲线法、试油法、束缚水饱和度法分别求取东营凹陷孔一段—沙四下亚段红层砂体不同埋深下有效储层的物性下限,结合红层砂体沉积、成岩作用、地层压力特征探讨有效储层发育的控制因素。结果表明:红层砂体不同埋深下有效储层的物性下限与深度存在函数关系;沉积作用是红层砂体有效储层发育程度的主控因素,成岩作用对有效储层发育影响较大,岩石颜色和地层压力对储层有效性影响相对较小;浅水型三角洲水下分流河道和河口坝、漫湖三角洲水下分流河道和河口坝、冲积扇漫流沉积和辫状水道以及滨湖滩坝坝主体是有效储层有利发育区。Based on oil production test,mercury injection data and physical properties,the petrophysical parameter cutoff of effective reservoir of red beds sandbodies of the first member of Kongdian formation（Ek1） and the lower submember of the fourth member of Shahejie formation（Es4x） of Paleogene in Dongying depression was determined by distribution function curve method,oil production test method,and irreducible water saturation method.Combining the analysis of sedimentary characteristics,diagenesis characteristics and reservoir pressure characteristics of red beds sandbodies,the controlling factors of effective reservoirs were discussed.The results show that there is the function relation between the petrophysical parameter cutoff of effective reservoir and depth.Sedimentation is the main controlling factor while diagenesis is an important factor that affected effective reservoir development in red beds sandbodies.The influence of rocks color and reservoir pressure on reservoir physical properties is not obvious.The effective reservoir was mainly developed in the underwater distributary channel and mouth bar of shallow water delta and flooded lake delta,the sheet deposit and braided channel of alluvial fan,and in the bar main body of lakeshore beach-bar.

关 键 词：红层 物性下限 有效储层 孔店组 东营凹陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]