L38区长8油藏表面活性剂驱先导试验开发特征分析  

Analysis of development characteristics of surfactant flooding pilot test in Chang 8 reservoir of L38 area

作　　者：刘军全[1] 余航[1] 冷福[1] 高波[1] LIU Junquan;YU Hang;LENG Fu;GAO Bo(Oil Production Plant 7 of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710200,China)

机构地区：[1]中国石油长庆油田分公司第七采油厂,陕西西安710200

出　　处：《石油化工应用》2024年第3期72-76,81,共6页Petrochemical Industry Application

摘　　要：环江油田超低渗油藏储量、产量占比大,一次井网注水开发后水驱矛盾突出。表面活性剂性能评价结果显示,此次表面活性剂驱试验能大幅降低界面张力,具有抗吸附性、小浓度下改变润湿性等效果,两相共渗区范围扩大,驱油效率可提高5.53%。在L38区中部选取4个注采井组开展先导试验,连续注入8个月后水驱矛盾改善,控水增油效果显著,开发指标变好,水驱动态储量增加1.07倍。The reserves and production of ultra-low permeability reservoirs in Huanjiang oilfield account for a large proportion,and the water flooding contradiction is prominent after a well network water injection development.The performance evaluation results of surfactant show that the surfactant flooding test can greatly reduce the interfacial tension,with anti-adsorption,change wettability under low concentration and other effects,expand the range of two-phase co-permeability area,and improve the oil displacement efficiency by 5.53%.In the middle of L38 area,four injection and production well groups were selected to carry out pilot tests.After continuous injection for 8 months,the water flooding contradiction was improved,the effect of water control and oil increase was significant,the development index was improved,and the water flooding dynamic reserves increased by 1.07 times.

关 键 词：表面活性剂 超低渗油藏 环江油田 开发特征 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]