埕岛油田盐水水淹层测井综合评价方法  

Log Interpretation Method of Saline Water-Flooded Layer in Chengdao Oilfield

作　　者：李健 曲萨 张海娜 申辉林[2] 胡晨彬 孙启鹏 LI Jian;QU Sa;ZHANG Haina;SHEN Huilin;HU Chenbin;SUN Qipeng(Research Institute of Exploration and Development, Sinopec Shengli Oilfield Company, Dongying, Shandong 257000, China;School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong 266580, China)

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257000 [2]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《测井技术》2022年第3期304-310,共7页Well Logging Technology

基　　金：中国石油化工股份有限公司科技攻关项目“储层精细表征及多开发方式混合数值模拟技术”(P20044-1)。

摘　　要：埕岛油田各区块目前已相继进入中-高含水期,水淹类型属于盐水水淹。随着水淹程度增强,地层电阻率受到诸多因素的影响,测井曲线响应特征具有多解性,电阻率减小量与水淹程度的关系一直难以界定,给盐水水淹层的定性解释和定量评价均带来了极大的困难。基于埕岛油田22F井区的实际地质情况,对水淹层测井响应特征进行分析,提出了重构水淹层指示参数定性判识水淹层的方法,并通过模拟水驱油实验来验证变倍数物质平衡法在盐水驱油油藏动态变化中的适用性。在实际测井资料处理过程中,采用变倍数物质平衡法求解混合液电阻率、含水饱和度以及产水率等水淹层关键参数,其定量解释结果与重构水淹层指示曲线及生产测试结论相吻合,应用效果良好。Each block of Chengdao oilfield has entered medium-high water cut stage one after another,and the water flooding type belongs to saline water flooding.With the increase of water flooding,formation resistivity is affected by many factors,and the response characteristics of logging curves have multi-solution.The relationship between resistivity reduction and water flooding degree is always difficult to define,which brings great difficulties to the qualitative interpretation and quantitative evaluation of saline water-flooded layer.Based on the actual geological conditions of 22F well area in Chengdao oilfield,the logging response characteristics of water-flooded zone are analyzed,and the method of qualitative identification of water-flooded zones by reconstructing water-flooded zone indicator parameters is proposed in this paper.The applicability of variable multiple material balance method in the dynamic change of brine flooding reservoir is verified by simulating water flooding experiment.In the process of actual logging data processing,the variable multiple material balance method is used to calculate the key parameters of water-flooded layer,such as resistivity of mixed liquid,water saturation and water production rate.The quantitative interpretation results are consistent with the reconstructed indication curve of water-flooded layer and the production test results.The application effect of the method is good.

关 键 词：盐水水淹层 水淹级别 剩余油饱和度 水淹层测井评价 

分 类 号：P631.84[天文地球—地质矿产勘探]