基于Pollock流线追踪的油藏高效水驱管理方法  

Efficient management of water flooding reservoirs based on Pollock streamline tracing

作　　者：孙亮[1] 李保柱[1] 刘凡 SUN Liang;LI Baozhu;LIU Fan(PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;State Key Laboratory of Offshore Oil Exploration,Beijing 100028,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中海油研究总院有限责任公司,北京100028 [3]海洋石油高效开发国家重点实验室,北京100028

出　　处：《岩性油气藏》2021年第3期169-176,共8页Lithologic Reservoirs

基　　金：国家科技重大专项“伊拉克大型生物碎屑灰岩油藏注水开发技术研究与应用”(编号:2017ZX05030-001)资助。

摘　　要：中东地区薄层碳酸盐油藏主要采用水平井井网进行注水开发,目前水平井水淹程度高、注水效率低等问题日益突出,为此提出基于Pollock流线追踪技术的油藏高效水驱管理方法。根据流线模拟结果确定动态井组,计算井的分配因子,分析油藏注采连通状况并评价注水效率,通过优化注采政策改善水驱开发效果。K1油藏现场应用结果表明:井组注水分配比例更加均衡,注采流线分布趋于合理,水平井线性正对方向上的无效水循环减少,油藏注水效率和波及系数明显提高,现场试验井含水率平均降低10%以上。水平井井网高效水驱管理保证了油藏产量的稳定。Horizontal well pattern is mainly used for water flooding development of thin carbonate reservoirs in the Middle East.Currently,the problems of high water flooding degree and low water injection efficiency are becoming increasingly prominent.Therefore,a method of efficient water flooding management based on the technique of Pollock streamline tracing was proposed to evaluate water flooding index and optimize injection-production parameters.According to the streamline simulation,the dynamic well groups were determined,and the distribution factors of wells were calculated.The injection-production connectivity and the water injection efficiency were evaluated.The water flooding development effect could be improved by optimizing the injection-production policies.This method was applied to K1 reservoir,and the results show that the distribution of injected water and streamlines in well groups became more balanced.The ineffective water circulation in the linear direction of horizontal wells was obviously reduced.The water injection efficiency and conformance factor were improved.The water cut of pilot wells were decreased by more than 10%on average.This technique is of great significance to stabilizing the production of oil fields.

关 键 词：流线追踪 水驱管理 注水效率 碳酸盐岩油藏 中东地区 

分 类 号：TE344[石油与天然气工程—油气田开发工程]