镇北油田延长组长3 油层组精细地层划分与对比
网络出版日期: 2007-12-15
Fine stratigraphic classification and correlation of Chang 3 reservoir of Yanchang Formation in Zhenbei Oilfield
Online published: 2007-12-15
利用测井曲线和岩心资料, 分析了研究区100 余口探井的岩、电特征, 对镇北油田长3 油层组进行了精细划分与对比, 将长3 油层组自上而下划分为长311、长312、长313、长321、长322、长323、长331、长332、长333 等9 个不同级别的小层, 各小层厚度大致相等。其中长322、331 小层为水下分流河道沉积, 砂体发育, 是研究区长3 油层组的主力产油层。长3 油层组的精细地层划分与对比为研究沉积微相、砂体展布、储层非均质性及预测有利含油区块提供了地质基础数据, 对油田开发具有非常重要的意义。
韩春元 , 赵贤正 , 金凤鸣 , 王权 , 李先平 , 王素卿 . 镇北油田延长组长3 油层组精细地层划分与对比[J]. 岩性油气藏, 2007 , 19(4) : 82 -86 . DOI: 10.3969/j.issn.1673-8926.2007.04.014
Based on well logs and core data, the characteristics of the rock-electric property of more than 100 wells are analyzed. The fine stratigraphic classification and correlation of Chang 3 reservoir in Zhenbei Oilfield are carried out. From top to bottom, Chang 3 can be divided into Chang 311, Chang 312, Chang 313, Chang 321, Chang 322, Chang 323, Chang 331, Chang 332 and Chang 333. Among them, Chang 322 and Chang 331 are underwater distributary channel deposits, and with sand bodies developed well, they become the dominated reservoirs in the study area. The fine classification and correlation can provide geologic basic data for the study on sedimentary microfacies, sand body distribution, reservoir heterogeneity and favorable target prediction, which takes a significant part in the oilfield development.
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