新立村油田新区沙二下亚段物源特征分析

摘要

针对新立村油田沙二下亚段物源及其沉积特征不明确的问题,研究中采用C-M图解分析,Cm值及黏土矿物分析,测井、录井等资料分析以及砂地比分析等方法.得出其可能为重力流沉积,其次为牵引流沉积;其成熟度中等偏低;其S28和S27段砂层组可能为湖泊相的滨浅湖相沉积,S27-S25段砂层组可能为三角洲相的前缘亚相沉积,S24-S21段砂层组可能为三角洲相的平原亚相或者为河流相沉积;其可能的物源方向为北部的陈家庄凸起及北东向的青坨子凸起的结论.%Aimed at the problems of ambiguous provenance and sedimentary characteristics of lower Es2 submember of Xinlicun oilfield,through the C-M graphic analysis,its Cm value and clay mineral analysis,logging data analysis and sandstone percent analysis,it was concluded that it is the gravity flow deposits,followed by traction current deposits.Through,we can see that it is the low compositional maturity.It can be concluded that its S28 and S27 sand formation may be the lake shore shallow lacustrine sedimentary facies,S27-S25 period of sand group may be the leading edge of delta facies deposition,S24-S21 period of sand group may be plain subfacies and delta facies or fluvial facies sedimentary.We can obtain that the possible source direction is the north for Chenjiazhuang heave or north-east for Qingtuozi heave.