靖安油田盘古梁长6油藏流动单元的定量划分  

Quantitative division of flow units in Panguliang Chang 6 reservoir,Jing'an oilfield

作　　者：史成恩[1] 解伟[1] 孙卫[1] 梁晓伟[2] 闫林[3] 

机构地区：[1]西北大学大陆动力学国家重点实验室地质学系,陕西西安710069 [2]中国石油长庆油田勘探开发研究院,陕西西安710021 [3]中国石油勘探开发研究院,北京100083

出　　处：《石油与天然气地质》2006年第2期239-243,共5页Oil & Gas Geology

基　　金：国家重点基础研究发展规划(973)项目(2003CB214606);长江学者和创新团队发展计划资助(IRT0559)

摘　　要：以靖安油田盘古梁长6油藏为例,在沉积微相、储层综合定量分析评价基础上,选取储层厚度、孔隙度、渗透率、泥质含量、流动带指数、储层厚度与孔隙度乘积6个参数进行流动单元的划分。应用高分辨率层序地层学将长6油藏精细划分为15个小层,将所有砂体划分为E,G,M和P 4类流动单元。结果表明,盘古梁长61底部和盘古梁长62顶部是研究区盘古梁长6油层组的主力油层,各类流动单元与储层岩性、物性、沉积微相和产能具有很好的对应关系。此次流动单元划分的参数取值,综合评价函数与评价指标,能够真实客观地反映低渗、低孔、储层物性差、非均质性强等地质特征,符合该类储层流动单元评价划分的精度要求。Taking Panguliang Chang 6 reservoir in Jing＇ an oilfield as an example, six parameters, including reservoir thickness, porosity, permeability, shale content, flow-zone index, and the product of reservoir thickness and porosity, are selected for quantitative division of flow units, based on comprehensive quantitative analysis and evaluation of sedimentary microfacies and reservoir. Panguliang Chang 6 reservoir is finely divided into 15 sublayers, and all the sandbodies can be grouped into 4 types of flow units, including E, G, M and P, by using high resolution sequence stratigraphy. The results show that the bottom of Panguliang Chang 61 and the top of Panguliang Chang 62 are the major pay zones of Panguliang Chang 6 reservoir in the study area, and all the flowunit types are well correlated with lithologies, physical properties, sedimentary microfacies and productivity of the reservoir. The selected values of parameters, comprehensive evaluation functions and indexes for the flow unit division can truly and objectively reflect the geologic features of low such as poor poroperm characteristics and strong heterogeneity, and can unit evaluation and division for this kind of reservoir. permeability and low porosity reservoir, meet the accuracy requirements of flow

关 键 词：流动单元 聚类分析 回归分析 判别函数 平面分布 盘古梁长6油藏 鄂尔多斯盆地 

分 类 号：TE313.5[石油与天然气工程—油气田开发工程]