近井地带高速剪切对油田驱油用非均相体系性能的影响  

EFFECTS OF HIGH-SPEED SHEARING NEAR WELLBORE ON THE CHARACTERISTICS OF HETEROGENEOUS OIL DISPLACEMENT SYSTEMS

作　　者：徐建鹏 赵方剑[1] 徐辉[1] 宋敏[2] 孙士杰 Xu Jianpeng;Zhao Fangjian;Xu Hui;Song Min;Sun Shijie(Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying 257015,Shandong,China;Oil and Gas Development Management Center,Shengli Oilfield Company,SINOPEC,Dongying 257000,Shandong,China;Marine Oil Production Plant,Shengli Oilfield Company,SINOPEC,Dongying 257237,Shandong,China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [2]中国石化胜利油田分公司油气开发管理中心,山东东营257000 [3]中国石化胜利油田分公司海洋采油厂,山东东营257237

出　　处：《精细石油化工》2023年第5期27-31,共5页Speciality Petrochemicals

基　　金：中国石油化工股份有限公司科研课题(P20045)。

摘　　要：通过设计近井地带高速剪切模拟装置,研究了不同注入强度下非均相体系经近井地带高速剪切后的性能。实验结果表明:随着注入强度由6 m^(3)/(m·d)增加到12 m^(3)/(m·d),高速剪切后的非均相体系溶液表观黏度损失率由12.5%大幅增加至41.2%。在注入强度为12 m^(3)/(m·d)条件下,剪切后的非均相驱油体系黏弹性颗粒明显减少,体系由剪切前的弹性流体变为剪切后黏性流体。岩心渗流和驱油实验表明,经过近井地带高速剪切后,非均相体系渗流阻力系数降低接近90%,提高采收率降低4.2%。The characteristic changes of heterogeneous oil displacement systems under different injection rates after near wellbore high-speed shear was studied using the high-speed shear device.The results indicate that the apparent viscosity loss rate significantly increases from 12.5%to 41.2%with the increase of injection rate from 6 to 12 m^(3)/(m·d).At the injection rate of 12 m^(3)/(m·d),the viscoelastic particles reduce,and the viscosity and elastic modulus correspondingly reduce.Core flooding and oil displacement experiments showed that the resistance coefficient drops near 90%after the shearing near wellbore,and oil recovery reduces to 4.2%.

关 键 词：非均相体系 近井高速剪切 黏弹性能 驱油性能 

分 类 号：TQ027.35[化学工程]