根据油井含水率确定分层剩余油饱和度的图版法  

PLATE APPROACH TO DETERMINE SEPARATE LAYER REMAINING OIL SATURATION ACCORDING TO WATER CUT OF PRODUCERS

作　　者：于海丽[1] 程时清[1] 张利军[1] 姜桂芹[1] 王峻岭[1] 

机构地区：[1]中国石油大学教育部石油工程重点实验室,北京102249

出　　处：《大庆石油地质与开发》2011年第2期105-109,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家油气重大项目“海上油田化学驱油藏评价技术研究”（2008zx05024002012）资助.

摘　　要：针对开发中后期注采井分层监测作业成本高、分层动态监测资料少、分层水淹状况分析难度大等问题，首次研究了多层系油藏采用油井含水率确定分层剩余油饱和度的图版法。考虑了储层纵向非均质性，认为单井井控范围内分层含水率和分层的流动系数与全井平均流动系数之比具有对应关系，利用油井含水率确定分层含水率，并进一步确定分层剩余油饱和度。经实际生产资料分析，并与分层测试资料对比验证，符合率达到70％以上，说明图版法能应用于类似多层系油田中、高含水期的水淹层含水预测，能够弄清无产液剖面资料情况下分层动用状况，为分析剩余油分布规律、调整产液结构、实施有效的增产措施提供可靠依据。In view of the high cost of separate layer monitoring for producers and injectors at the middle and late stages of development, the little separate layer performance monitoring data, and the difficult analysis for separate layer water-out situation, this paper studies the plate approach to determine separate layer residual oil saturation with water cut of producers in reservoirs with multi layer systems for the first time. Considering vertical heterogenei- ty of reservoirs, within the range controlled by single wells, the ratio of separate layer water cut and flow coefficient and average flow coefficient of the whole well shows the corresponding relation. As a result, the separate layer water cut can be determined by using water cut of producers, and the separate layer remaining oil saturation can be determined further. Analyzing actual production data, and contrasting and verifying separate layer testing data, the coincidence rate reaches over 70%. It is confirmed that the plate approach can he applied to predict the water cut of watered -out layers in similar reservoirs with multi layers at its middle and high water cut stage, find out separate layer producing situation without liquid production profile and provide the reliable basis for analyzing remaining oil distribution, adjusting liquid production structure and implementing effective stimulation.

关 键 词：多层系油藏 分层含水率 油井含水率 剩余油饱和度 

分 类 号：TE341[石油与天然气工程—油气田开发工程]