摘要
不同于常规堵水调剖,深度堵水调剖过程具有动态、大延迟、非线性的特性,采用常规的近井堵水调剖效果评价方法会引起较大偏差。综合考虑注水井和油井的见效情况,构建深度堵水调剖效果综合评价指数,在此基础上,通过V/S分析计算综合评价指数时间序列的Hurst指数,并结合序列稳定性分析,建立了深度堵水调剖效果综合评价方法。孤岛油田某深度堵水调剖井组的综合效果评价应用表明:措施实施30 d后,深度堵水调剖措施开始见效,综合评价指数时间序列的Hurst指数大于0.5,且表征序列稳定性的V_(N)统计量呈持续增长趋势,预测该井组的深度堵水调剖措施改善趋势未来一定时间内将持续,这与该井组的生产动态曲线变化相吻合,说明该方法可为深度堵水调剖工艺矿场应用提供可靠的指导。
The conventional technology regards the process of deep water shutoff and profile control as a dynamic nonlinear problem with a long delay.The conventional evaluation methods for near-well water shutoff and profile control will cause large deviations.Therefore,considering the effect on water injection wells and oil wells,a comprehensive evaluation index for deep water shutoff and profile control is constructed.On this basis,the Hurst index of time series of the comprehensive evaluation index is calculated through V/S analysis and the stability of the time series is analyzed.A comprehensive evalua⁃tion method of deep water shutoff and profile control is developed.This method is applied to a certain well group subject to deep water shutoff and profile control in Gudao Oilfield.The results demonstrated that the measures of deep water shutoff and profile control began to take effect after 30 days.The Hurst index was greater than 0.5,and V_(N),characterizing the stabil⁃ity of the time series,continued to increase.It is predicted that the effect of those measures on this well group will last for a certain period of time,and this coincides with the change in the dynamic curves of production.It is proven this method can provide reliable guidance for the field application of deep water shutoff and profile control.
作者
王增林
史树彬
张先敏
尹相文
晁政
WANG Zenglin;SHI Shubin;ZHANG Xianmin;YIN Xiangwen;CHAO Zheng(Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257001,China;Petroleum Engineering Technology Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257000,China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao City,Shandong Province,266580,China)
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2021年第3期77-83,共7页
Petroleum Geology and Recovery Efficiency
基金
国家科技重大专项“特高含水后期整装油田延长经济寿命期开发技术”(2016ZX05011-001)
中国石化“十条龙”项目“胜利整装油田特高含水期深度堵调技术”(217007)。
关键词
深度堵水调剖
效果评价
综合评价指数
时间序列
V/S分析
deep water shutoff and profile control
effect evaluation
comprehensive evaluation index
time series
V/S anal⁃ysis
