改性石墨高强调驱剂的制备及其矿场应用  

PREPARATION AND FIELD APPLICATION OF MODIFIED GRAPHITE FLOODING AGENT WITH HIGH PROFORMENCE

作　　者：杨耀春 黄纯金 何吉波 李媛 杨筱珊 赵晓伟 Yang Yaochun;Huang Chunjin;He Jibo;Li Yuan;Yang Xiaoshan;Zhao Xiaowei(The 10th Oil Production Plant of Changqing Oilfield Branch,Qingyang 745100,Gansu,China;The 12th Oil Production Plant of Changqing Oilfield Branch,Qingyang 745100,Gansu,China;Chenghua Electric Power Brigade of New Energy Project Department of Changqing Oilfield Branch,Qingyang 745100,Gansu,China)

机构地区：[1]长庆油田分公司第十采油厂,甘肃庆阳745100 [2]长庆油田分公司第十二采油厂,甘肃庆阳745100 [3]长庆油田分公司新能源项目部城华电力大队,甘肃庆阳745100

出　　处：《精细石油化工》2024年第3期49-53,共5页Speciality Petrochemicals

基　　金：中国石油天然气集团有限公司长庆油田分公司课题(2018GSJH0207)。

摘　　要：采用两步改性法对石墨进行氧化改性及活性基团接枝,制备了新型改性石墨高强度调驱剂。室内实验结果表明,改性活性纳米石墨颗粒粒径在50~200 nm,具有自润滑性、易于注入、水溶分散等特点,室温稳定期可达1 a,聚结膨胀能力达常规膨胀剂的3~10倍。矿场实验表明,当质量分数为0.15%,注入量为1 PV时,综合效益最佳,且调堵、洗油性能较好,投入产出比可达1∶1.8。A two-step modification method was adopted to oxidize and graft active groups on graphite according to the characteristics of the oil reservoir,and a new type of modified graphite displacement control agent with high performance was prepared.Through indoor experiments,it has been verified that the modified active nano graphite particles have a particle size of about 50-200 nm,which has the characteristics of self-lubricating properties,easy injection,and water solubility dispersion.The room temperature stability period can reach one year,and the coalescence expansion ability is 3-10 times that of conventional expansion agents.After field experiments,it has been shown that when the mass fraction is 0.15%and the injection amount is 1 PV,the comprehensive benefits are the best,and the plugging and oil washing performance is good.The input-output ratio can reach 1∶1.8.

关 键 词：高强调驱剂 调驱性能 阻力系数 界面张力 洗油能力 

分 类 号：TE357[石油与天然气工程—油气田开发工程]