摘要
大港油田目前所用助排剂功能单一,且破乳效果不佳,无防膨功能,需另加破乳剂及防膨剂,造成材料成本高。采用阳离子表面活性剂、低碳醇、高碳醇和互溶剂等材料,研制了一种高效破乳型助排剂BGPZ,配方为:异丁醇、十二醇、主剂、乙二醇单丁醚质量比为5:2:40:12,在0.2%加量下,表面张力18.1 mN·m^(-1),界面张力0.2 mN·m^(-1),接触角78°,破乳率90%以上;在质量分数1%加量下,防膨率68%,配伍性好。先后在5口井上应用,结果表明BGPZ是一种性能优良的破乳型助排剂。
At present, the cleanup agent used in Dagang oilfield has poor demulsification effect and no clay stabilization function. Demulsifier and anti swelling agent need to be added additionally. In this paper, a high efficiency demulsifying-cleanup agent BGPZ was developed by using cationic surfactant, alcohol, higher alcohol and mutual solvent. The formula was determined as follows: m(isobutanol)∶m(dodecanol)∶m(main agent)∶m(glycol monobutyl ether)= 5∶2∶40∶12. At 0.2% mass fraction, the performance evaluation results showed that the surface tension was 18.1 mN·m^(-1), the interfacial tension reached 0.2 mN·m^(-1),the contact angle was 78°, the demulsification rate was more than 90%. At 1% mass fraction, the anti expansion rate was 68%, and the compatibility was good. It was successively applied in 5 wells, which showed the BGPZ was a demulsifying drainage aid with excellent performance.
作者
谢富强
郭立伟
吴彦国
张婧
石昀
XIE Fu-qiang;GUO Li-wei;WU Yan-guo;ZHANG Jing;SHI Yun(Tianjin Dagang Oilfield Bingang Group Bohong Petrochemical Co.,Ltd.,Tianjin 200280,China;International Drilling Company of CNPC Great Wall Drilling Engineering Co.,Ltd.,Tianjin 200280,China)
出处
《当代化工》
CAS
2022年第11期2564-2568,共5页
Contemporary Chemical Industry
基金
中国石油天然气股份有限公司重大科技专项,大港油区效益增储稳产关键技术研究与应用(项目编号:2018E-11)。
关键词
酸化
压裂
破乳
助排
表面活性剂
Acidizing
Fracturing
Demulsifying
Cleanup
Surfactant
