兼有降黏功能的缓蚀剂在高温高含CO_2/H_2S环境中的适应性评价
|
摘要
针对高温降黏缓蚀剂在高温高含CO2/H2S环境中的适应性问题,利用高温高压失重腐蚀试验和高温高压电化学测量技术对高温降黏缓蚀剂进行缓蚀性能测试,采用旋转黏度计测试了缓蚀剂对现场原油的降黏效果,应用电化学阻抗技术测量了缓蚀剂的残余浓度。研究表明,该缓蚀剂为阳极型缓蚀剂,将质量浓度为200 mg/L和80 mg/L的缓蚀剂分别加入掺稀油中,其对井下油管材质P110和地面集输系统管线材质20G有明显的缓蚀作用,均匀腐蚀速率小于0. 076 mm/a且无明显点蚀。当缓蚀剂质量浓度为200 mg/L时,对现场原油的降黏率可达20%,井筒腐蚀试验后溶液中缓蚀剂的残余浓度大于30 mg/L。
In view of the adaptability problem of high temperature and viscosity reduction corrosion inhibitor in the high temperature and high CO2/H2 S environment,the high temperature and high pressure weightless corrosion tests and high temperature and high pressure electrochemical measurement technologies are used to test the corrosion inhibition performance of high temperature and viscosity reduction corrosion inhibitor, the viscosity reduction effect of corrosion inhibitor on filed crude oil is measured by the rotary viscometer,and the residual concentration of corrosion inhibitor is measured by electrochemical impedance technology. The research shows that the corrosion inhibitor is an anode type of corrosion inhibitor. When 200 mg/L and 80 mg/L of the corrosion inhibitor is added respectively,it has obvious corrosion inhibition effect on the downhole tubing material P110 and the surface gathering and transportation system material 20 G. The average corrosion rate is less than 0.076 mm/a,and there is no obvious pitting corrosion. When the concentration(mass concentration) of corrosion inhibitor reaches 200 mg/L,the viscosity reduction rate of field crude oil reaches 20%,and the residual concentration of corrosion inhibitor in the solution after the wallhole corrosion test is more than 30 mg/L.
In view of the adaptability problem of high temperature and viscosity reduction corrosion inhibitor in the high temperature and high CO2/H2 S environment,the high temperature and high pressure weightless corrosion tests and high temperature and high pressure electrochemical measurement technologies are used to test the corrosion inhibition performance of high temperature and viscosity reduction corrosion inhibitor, the viscosity reduction effect of corrosion inhibitor on filed crude oil is measured by the rotary viscometer,and the residual concentration of corrosion inhibitor is measured by electrochemical impedance technology. The research shows that the corrosion inhibitor is an anode type of corrosion inhibitor. When 200 mg/L and 80 mg/L of the corrosion inhibitor is added respectively,it has obvious corrosion inhibition effect on the downhole tubing material P110 and the surface gathering and transportation system material 20 G. The average corrosion rate is less than 0.076 mm/a,and there is no obvious pitting corrosion. When the concentration(mass concentration) of corrosion inhibitor reaches 200 mg/L,the viscosity reduction rate of field crude oil reaches 20%,and the residual concentration of corrosion inhibitor in the solution after the wallhole corrosion test is more than 30 mg/L.
引文
[1]吕依依，王远．油气田用缓蚀剂研发进展[J]．石油管材与仪器，2015,1(4):5-7,10.LYU Yiyi WANG Yuan. Research progress of corrosion inhibitor in oil and gas fields[J]. Petroleum Tubular Goods&Instruments,2015,1(4):5-7,10.
[2]崔福员，桑军元，王云云，等．油田高温酸化缓蚀剂研究进展[J]．石油化工应用，2016,35(10):1-4.CUI Fuyuan, SANG Junyuan, WANG Yunyun, et al.Advance of oilfield high-temperature acidification corrosion inhibitors[J]. Petrochemical Industry Application, 2016,35(10):1-4.
[3]胡徐彦，刘英坤．油水混输管道用缓蚀剂的筛选与评价[J]．涂料工业，2017,47(7):71-75.HU Xuyan,LIU Yingkun.Aelection and evaluation of corrosion inhibitors used in oil and water mixture pipelines[J].Paint&Coatings Industry,2017,47(7):71-75.
[4]李珊．耐高温缓蚀剂的开发及缓蚀性能研究[D]．唐山：华北理工大学，2017.LI Shan.The study on development and corrosion inhibition performance of high temperature corrosion inhibitor[D].Tangshan:North China University of Science and Technoligy,2017.
[5]张天胜．缓蚀剂[M]．北京：化学工业出版社，2002.ZHANG Tiansheng. Corrosion inhibition[M]. Beijing:Chemical Industry Press,2002.
[6]李自力，程远鹏，毕海胜，等．油气田CO2/H2S共存腐蚀与缓蚀剂技术研究进展[J]．化工学报，2014, 65(2):406-414.LI Zili, CHENG Yuanpeng, BI Haisheng, et al. Research progress of CO2/H2S corrosion and inhibitor rechniques in oil and gas fields[J]. CIESC Journal, 2014, 65(2):406-414.
[7]余国俊，汤兵．缓蚀剂研究中的电化学方法[J]．中国腐蚀与防护学报，2009,29(1):76-80.YU Guojun, TANG Bing. Electrochemical methods of inhibitor research[J]. Journal of Chinese Society for Corrosion and Protection,2009,29(1):76-80.
[8]张宝宏，丛文博，杨萍．金属电化学腐蚀与防护[M]．北京：化学工业出版社，2014.ZHANG Baohong, CONG Wenbo, YANG Ping. Electrochemical corrosion and protection of metals[M]. Beijing:Chemical Industry Press,2014.
[9]潘若生．CO2驱采油井腐蚀监测技术研究[D]．大庆：东北石油大学，2015.PAN Ruosheng. Corrosion monitoring wells CO2flooding technology[D]. Daqing:Northeast Petroleum University,2015.
[10]扈显琦，江成浩．交流阻抗技术的发展与应用[J]．腐蚀与防护，2004,25(2):57-60.HU Xianqi, JIANG Chenghao. The development and applications of impedance technology[J].Corrosion&Protection,2004,25(2):57-60.
[11]余强，司云森，曾初升．交流阻抗技术及其在腐蚀科学中的应用[J]．化学工程师，2005,19(9):35-36.YU Qiang, SI Yunsen, ZENG Chusheng. AC impedance technology and application in corrosion science[J].Chemical Engineer,2005,19(9):35-36.
[2]崔福员，桑军元，王云云，等．油田高温酸化缓蚀剂研究进展[J]．石油化工应用，2016,35(10):1-4.CUI Fuyuan, SANG Junyuan, WANG Yunyun, et al.Advance of oilfield high-temperature acidification corrosion inhibitors[J]. Petrochemical Industry Application, 2016,35(10):1-4.
[3]胡徐彦，刘英坤．油水混输管道用缓蚀剂的筛选与评价[J]．涂料工业，2017,47(7):71-75.HU Xuyan,LIU Yingkun.Aelection and evaluation of corrosion inhibitors used in oil and water mixture pipelines[J].Paint&Coatings Industry,2017,47(7):71-75.
[4]李珊．耐高温缓蚀剂的开发及缓蚀性能研究[D]．唐山：华北理工大学，2017.LI Shan.The study on development and corrosion inhibition performance of high temperature corrosion inhibitor[D].Tangshan:North China University of Science and Technoligy,2017.
[5]张天胜．缓蚀剂[M]．北京：化学工业出版社，2002.ZHANG Tiansheng. Corrosion inhibition[M]. Beijing:Chemical Industry Press,2002.
[6]李自力，程远鹏，毕海胜，等．油气田CO2/H2S共存腐蚀与缓蚀剂技术研究进展[J]．化工学报，2014, 65(2):406-414.LI Zili, CHENG Yuanpeng, BI Haisheng, et al. Research progress of CO2/H2S corrosion and inhibitor rechniques in oil and gas fields[J]. CIESC Journal, 2014, 65(2):406-414.
[7]余国俊，汤兵．缓蚀剂研究中的电化学方法[J]．中国腐蚀与防护学报，2009,29(1):76-80.YU Guojun, TANG Bing. Electrochemical methods of inhibitor research[J]. Journal of Chinese Society for Corrosion and Protection,2009,29(1):76-80.
[8]张宝宏，丛文博，杨萍．金属电化学腐蚀与防护[M]．北京：化学工业出版社，2014.ZHANG Baohong, CONG Wenbo, YANG Ping. Electrochemical corrosion and protection of metals[M]. Beijing:Chemical Industry Press,2014.
[9]潘若生．CO2驱采油井腐蚀监测技术研究[D]．大庆：东北石油大学，2015.PAN Ruosheng. Corrosion monitoring wells CO2flooding technology[D]. Daqing:Northeast Petroleum University,2015.
[10]扈显琦，江成浩．交流阻抗技术的发展与应用[J]．腐蚀与防护，2004,25(2):57-60.HU Xianqi, JIANG Chenghao. The development and applications of impedance technology[J].Corrosion&Protection,2004,25(2):57-60.
[11]余强，司云森，曾初升．交流阻抗技术及其在腐蚀科学中的应用[J]．化学工程师，2005,19(9):35-36.YU Qiang, SI Yunsen, ZENG Chusheng. AC impedance technology and application in corrosion science[J].Chemical Engineer,2005,19(9):35-36.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |