低摩阻胶凝剂的制备及现场应用  

Preparation and Field Application of Low Friction Gelling Agent

作　　者：肖魏媛 王彬 刘畅 潘铮 张其平 吴家林 Xiao Weiyuan;Wang Bin;Liu Chang;Pan Zheng;Zhang Qiping;Wu Jialin(Sichuan Wivoldone Chemicals Co.,Ltd.,Sichuan,618304)

机构地区：[1]四川省威沃敦化工有限公司,四川618304

出　　处：《当代化工研究》2022年第8期112-114,共3页Modern Chemical Research

摘　　要：在遇到致密碳酸盐岩储层时,由于地层情况和管路摩阻的双重影响,反应为施工井口泵压的升高,导致无法提升施工排量,形成酸蚀裂缝的缝长短,为了解决施工过程中酸压工作液摩阻高的问题,本文通过合成一种反相乳液型低摩阻胶凝剂,并复配酸化用缓蚀剂、铁离子稳定剂、转相剂等辅剂制得胶凝酸工作液,实验数据表明:20%盐酸+2.5%低摩阻胶凝剂+2.5%酸化用缓蚀剂+1%铁离子稳定剂+1%粘土稳定剂+1%酸化用助排剂+1%酸化用转相剂,该体系胶凝酸在常温、170s^(-1)下表观粘度为37.5mPa·s,在140℃老化1h后粘度为30mPa·s,140℃缓蚀速率为29.0739g/(m^(2)·h),2.5%低摩阻胶凝剂水溶液的降阻率为75.17%,能够有效降低酸化工作液在泵注施工中的摩擦阻力。When encountering tight carbonate reservoirs,due to the double influence of formation conditions and pipeline friction,the reaction is the increase in pump pressure at the construction wellhead,which results in the inability to increase the construction displacement and the length of the fractures that form acid corrosion.To solve the problem of high frictional resistance of acid-fracturing working fluid during construction,this article synthesizes an inverse emulsion type low-friction gelling agent,and compounding auxiliary agents such as corrosion inhibitors for acidification,iron ion stabilizers,phase inversion agents,etc.The gelling acid working fluid was prepared.The experimental data showed:20%hydrochloric acid+2.5%low friction gelling agent+2.5%corrosion inhibitor for acidification+1%iron ion stabilizer+1%clay stabilizer+1%for acidification Drainage aid+1%phase inversion agent for acidification.The apparent viscosity of the system gelling acid is 37.5mPa·s at room temperature and 170s^(-1),and the viscosity is 30mPa·s after aging at 140℃for 1h,and the corrosion inhibition rate at 140℃it is 29.0739g/(m^(2)·h),the resistance reduction rate of 2.5%low friction gelling agent aqueous solution is 75.17%,which can effectively reduce the friction resistance of acidified working fluid in pump injection construction.

关 键 词：酸压施工 胶凝酸 反相乳液 低摩阻 降阻率 

分 类 号：TQ[化学工程]