镇北油田延长组长3油层组精细地层划分与对比  

Fine stratigraphic classification and correlation of Chang 3 reservoir of Yanchang Formation in Zhenbei Oilfield

作　　者：朱小燕[1] 李爱琴[2] 段晓晨[1] 田随良[1] 刘美荣[1] 

机构地区：[1]中国石油长庆油田分公司第二采油厂 [2]中国石油长庆油田分公司勘探开发研究院

出　　处：《岩性油气藏》2007年第4期82-86,共5页Lithologic Reservoirs

摘　　要：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。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 31^1, Chang 31^2, Chang 31^3, Chang 32^1, Chang 32^2, Chang 32^3, Chang 33^1, Chang 33^2 and Chang 33^3. Among them, Chang 32^2 and Chang 33^1 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.

关 键 词：长3油层组 标志层 精细地层划分与对比 镇北油田 

分 类 号：TE112.2[石油与天然气工程—油气勘探]