摘要
针对胜利油田尚二区油水流度比大导致的水窜问题,选取典型井组,运用单变量法和正交实验设计方法设定不同的注采参数方案,利用数值模拟技术预测各方案对应的开发指标,通过极差、方差分析从定性到定量研究注入浓度、注入时机、注入速度、注入年限、注入方式等对开发效果的影响。最优注采参数:注入浓度为0.30%,注入时机为含水率达到85%以后,注入速度为30 m3/d,注入年限为6 a,注入段塞为0.22倍孔隙体积。该研究为稠油油藏实施活性水驱开发提供了理论支持。
For the water channeling problem resulted from great ratio of oil to water mobility in the Shanger area of the Shengli oilfield,programs with various injection- production parameters are sel up through selection of typical well group and by use of single variable method and orthogonal teat & design,the criteria for development corresponding to various programs are predicted by means of numerical simulation,and the effects of a number factors,including injection concentration,injection timing,injection rate,injection duration and mode,on development are studied from qualitative to quantitative investigation by range and variance analysis.The best parameters of injection and production are;injection concentration 0.30%,injection timing is after water cut reaches85%,injection rate 30 m^3/d,injection duration 6a and injection slug size as 0.22 limes of pore volume.The study provides theoretical support for implementation of activated waterflooding in heavy oil reservoirs.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第1期88-91,155,共4页
Special Oil & Gas Reservoirs
基金
胜利油田科技项目"尚二区注活性水提高采收率潜力评价"(10202803-13-ZC0613-0001)部分研究内容
关键词
普通稠油
活性水驱
注采参数优化
正交试验
胜利油田尚二区
Ordinary heavy oil
activated water-flooding
optimization of injectio-production parameters
orthogonal test
Shanger area in the Shengli oilfield
