确定水驱油藏水侵量和经济可采储量的新方法  

A new method for determining water influx and economic recoverable reserves in water drive oil reservoir

作　　者：唐林[1] 赵长虹 王丽 杨公渠 高佳 

机构地区：[1]中国石油天然气管道局,河北廊坊065000 [2]中国石油新疆油田分公司风城油田作业区,新疆克拉玛依834000 [3]中国石油长城钻探工程有限公司固井公司,辽宁盘锦124010 [4]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《油气地质与采收率》2014年第5期84-86,116,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"高压气藏安全高效开发技术"(2011ZX05015-002);新世纪优秀人才支持计划(NCET-10-0950)

摘　　要：为了更加准确、简便地预测水驱油藏水侵量和经济可呆储量,通过对其计算方法的研究,基于张金庆水驱特征曲线和Welge方程,结合实际生产动态资料,利用经济极限产量推导出油水渗流特征及经济可采储量与经济极限含水率的关系式,再结合水侵量的物质平衡原理,确立计算水驱油藏水侵量和经济可采储量的新方法.不同综合含水率阶段的水侵量变化规律表明：水驱油藏的综合含水率越大,水侵量越大;当综合含水率小于60％时,水侵量随综合含水率呈线性增长;当综合含水率为60％～80％时,水侵量增幅变大;当综合含水率大于80％时,水侵量随综合含水率呈“上翘”式增长,水驱油藏水淹程度加快.The purpose of this study is to predict water influx and economic recoverable reserves accurately and simply in water-drive oil field. The calculation of water influx and economic recoverable reserves were based on the present production performance and Zhang's water drive curve, and we have studied the characteristics of oil-water flow by using Welge equation. Then, according to water influx material balance principle, a new calculation model for water influx was established. This paper also proposed a method for determination of economic limit water-cut to predict economic recoverable reserves of oil fields. The economic recoverable reserves can be calculated on the basis of the economic limit water-cut. The case study shows that calculation process of the new method is simple and the results are accurate and practical.

关 键 词：水驱油藏 水侵量 经济可采储量 水驱特征曲线 经济极限含水率 

分 类 号：TE313.8[石油与天然气工程—油气田开发工程]