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.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
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)
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
water drive oilfield
water influx
water saturation
economic recoverable reserves
water drive curve
economic limit water-cut
