基于岩相类型的碳酸盐岩储层预测方法研究——以滨里河盆地东缘石炭系碳酸盐岩储层为例  

Reservoir prediction of carbonate rocks based on lithofacies classification

作　　者：许晓凤[1] 

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《石油地质与工程》2017年第2期17-21,共5页Petroleum Geology and Engineering

基　　金：国家油气重大专项"海外含盐盆地油气成藏规律与重点探区目标优选"(2011ZX05029-002);中国石油天然气集团公司重大专项(2011E-2504)

摘　　要：由于各类碳酸盐岩在岩心、测井、地震反射特征以及声波阻抗上表现出的差异很小,碳酸盐岩储层预测一直是碳酸盐岩油藏研究的难点。以滨里海盆地东缘石炭系碳酸盐岩为例,在分析滨里海盆地石炭系不同类型碳酸盐岩储层微观和宏观差异的基础上,建立了不同的岩相类型,并分别对各类岩相的空间分布进行了预测,其中灰岩储层主要发育在背斜的主体部位,以台地边缘滩相为主;而白云岩储层主要发育在背斜构造的东侧,为构造高背景下的局限环境,呈条带状展布。预测结果与沉积模式和成岩演化相吻合。As the petrophysical properties of carbonate reservoir cannot be easily identified by core and logging,the seismic reflection was always weak because of small difference between acoustic impedance,the carbonate reservoir prediction has always been a difficulty in oil and gas exploration.By taking Carboniferous carbonate rock at the east margin of PreCaspian basin as an example,based on different types of carbonate reservoir of micro and macro characteristics difference,the litho-facies association and different reservoir spaces were predicted.The prediction covered limestone reservoir and dolomite reservoir,and the results indicated the limestone reservoir mainly developed in main producing area in platform shoal facies,while the dolomite reservoir was developed in a restricted area in the south-east part of the area,with strong heterogeneity.Both the limestone and dolomite reservoir prediction results were consistent with the depositional facies study and diagenesis evolution study.

关 键 词：滨里海盆地 碳酸盐岩 岩相类型 储层预测 

分 类 号：TE112.24[石油与天然气工程—油气勘探]