安83井区长7致密油藏空气泡沫驱研究与实践  

Research and practice of air-and-foam flooding of tight Chang7 oil reservoirs in well An83 area

作　　者：李俊军[1,2] 曾山[1,2] 李花花[1,2] 雷欣慧 周晋[1,2] LI JunJun;ZENG SHan;LI HuaHua;LEI XinHui;ZHOU Jin(Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;National Engineering Laboratory for Low-Permeability Petroleum Exploration and Development)

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程实验室

出　　处：《低渗透油气田》2018年第2期60-62,共3页

摘　　要：安83井区长7油藏属于典型的致密砂岩油藏,由于储层裂缝发育、基质渗透率极低,导致裂缝方向高含水油井或者水淹井较多、裂缝侧向油井见效慢、平面矛盾突出和注采调控难度大。为了探索致密油藏新的有效的开发方式,基于空气泡沫驱的机理,通过改变注入介质,优化注入参数、优选注入方式、优选后续开发方式,实现了致密油藏的有效开发。现场试验表明,与常规水驱相比,空气泡沫驱能显著降低目标油藏井组的含水率,提高最终采收率。The Chang7 reservoirs in the well An83 area are typical tight sandstone reservoirs.Due to the developed fractures in the reservoirs,the extremely low permeability of the matrix,they result in many high water-cut oil wells or flooded wells in the direction of fractures.The oil wells in the lateral of fractures responded slowly to the injection,and the plane contradiction is prominent and the injection-production regulation and control is difficult.In order to explore new and effective development methods for tight reservoirs,based on the mechanism of air foam flooding,the effective development of tight reservoirs is achieved by changing the injection medium,optimizing the injection parameters,optimizing the injection method,and optimizing the subsequent development methods.Field tests have shown that air foam flooding significantly reduces the water cut of the target reservoir group and improves the ultimate recovery efficiency compared to conventional water flooding.

关 键 词：致密油藏 空气泡沫驱 数值模拟 参数优化 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]