改性咪唑啉磷酸盐缓蚀剂的研制及性能评价
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摘要
针对王家湾区块王175采油井存在的抽油杆和油套管腐蚀问题,应用响应面法优化了改性咪唑啉磷酸盐缓蚀剂Inh-IGQ配方,应用静态挂片失重法、绝迹稀释法和电化学法评价了其缓蚀性能、杀菌性能和电化学机理。结果表明:由响应面法确定的Inh-IGQ最佳复配比例ρIMP∶ρGLU∶ρQAF=95. 10 mg/L∶49. 63 mg/L∶22. 86mg/L,预测的均匀腐蚀速率达到0.042 2 mm/a,实际测量的3组按最佳复配比例配制的Inh-IGQ R值与预测值非常接近,说明利用响应面法得到的Inh-IGQ的最佳复配比例是准确可靠的; Inh-IGQ具有良好的缓蚀效果、杀SRB效果和耐温效果,是一种以抑制阴极为主的混合型缓蚀剂。
Aiming at the corrosion problems of sucker rod and tubing-casing in Wang-175 recovery well of Wangjiawan area,the corrosion inhibitor formulation of modified imidazoline phosphate was optimized by response surface method,and the corrosion inhibition,bactericidal performance and electrochemical mechanism of Inh-IGQ were evaluated by static hanging weightloss method,extinction dilution method and electrochemical method. Results showed that the optimal ratio of Inh-IGQ determined by the response surface method was ρIMP∶ ρGLU∶ ρQAF= 95.10 mg/L ∶ 49.63 mg/L ∶ 22.86 mg/L,and the expected average corrosion rate was 0.042 2 mm/a. The measured R values of the three groups of the Inh-IGQ were very close to the predicted values according to the best mixed ratio,which indicated that the optimum compound proportion of Inh-IGQ obtained by response surface method was accurate and reliable. Besides,Inh-IGQ was a mixed corrosion inhibitor that mainly inhibited cathodes,and had good corrosion inhibition effect,SRB killing effect and temperature resistance effect.
Aiming at the corrosion problems of sucker rod and tubing-casing in Wang-175 recovery well of Wangjiawan area,the corrosion inhibitor formulation of modified imidazoline phosphate was optimized by response surface method,and the corrosion inhibition,bactericidal performance and electrochemical mechanism of Inh-IGQ were evaluated by static hanging weightloss method,extinction dilution method and electrochemical method. Results showed that the optimal ratio of Inh-IGQ determined by the response surface method was ρIMP∶ ρGLU∶ ρQAF= 95.10 mg/L ∶ 49.63 mg/L ∶ 22.86 mg/L,and the expected average corrosion rate was 0.042 2 mm/a. The measured R values of the three groups of the Inh-IGQ were very close to the predicted values according to the best mixed ratio,which indicated that the optimum compound proportion of Inh-IGQ obtained by response surface method was accurate and reliable. Besides,Inh-IGQ was a mixed corrosion inhibitor that mainly inhibited cathodes,and had good corrosion inhibition effect,SRB killing effect and temperature resistance effect.
引文
[1]王海.杏子川采油厂套管腐蚀规律及缓蚀剂防护研究[D].成都:西南石油大学,2015:6.
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[11]刘伟,黄宪华,赵家宏,等.油井的腐蚀原因与防护措施[J].腐蚀科学与防护技术,2006,18(6):448-450.
[12] HADLEY R F. Microbiological anaerobic corrosion of steel pipeline[J]. Oil and Gas Tour,1939,38(19):92-96.
[13]张学元,王凤平,杜元龙,等.石油工业中的细菌腐蚀和防护[[J].石油与天然气化工,1999,28(1):52-56.
[14]李俊莉,白方林,卢永斌.新型希夫碱酸化缓蚀剂的合成及应用性能评价[J].腐蚀与防护,2012,33(9):787-791.
[15]左翔,蒋裕丰,迟挺.新型含长链烷基苯并三唑缓蚀剂的制备与性能研究[J].中国腐蚀与防护学报,2016,36(5):415-420.
[16] XIAO X S,YEN P T,SIMO O P. Evaluation of an organic corrosion inhibitor on abiotic corrosion and microbiologically influenced corrosion of mild steel[J]. Ind Eng Chem Res,2007,46(22):7 117.
[2]韩亮,张帆,冯爱霞.樊学油区杆柱断脱现象的原因及治理措施[J].石油工业技术监督,2014(4):51-53.
[3]熊德珍,张功亚.江汉油田注水采油设备的腐蚀与防护[J].油田化学,1991,8(4):310-313
[4]林修洲,倪强,黄德阳.油酸基咪唑啉缓蚀剂的合成与缓蚀性能[J].腐蚀与防护,2013,34(2):125-128.
[5]李学坤,安娇龙,成西涛,等.新型咪唑啉季铵盐缓蚀剂合成工艺研究与性能评价[J].应用化工,2013,11(21):2 005-2 008.
[6] DIVYA B,TYAGI V K. Fatty imidazolines:chemistry,synthesis,properties and their industrial applications[J]. Journal of Oleo Science,2006,55(7):319-329.
[7]朱镭,于萍,罗运柏.咪唑啉缓蚀剂的研究及应用进展[J].材料保护,2003,30(3):438-442.
[8] BHRARA K,SINGH G. The inhibition of corrosion of mild steel in 0.5M sulfuric acid solution in the presence of benzyl triphenyl phosphonium bromide[J]. Appl Surf Sci,2006,253(2):846-853.
[9] WANG L,YIN G J,YIN J G. 2-Mercaptothiazoline and cetyl pyridinium chloride as inhibitors for the corrosion of a low carbon steel in phosphoric acid[J]. Corrosion Science,2001,43(6):1 197-1 202.
[10]潘旭东,王向明.循环水中氯离子控制及对不锈钢腐蚀机理探讨[J].工业水处理,2013,33(3):14-16.
[11]刘伟,黄宪华,赵家宏,等.油井的腐蚀原因与防护措施[J].腐蚀科学与防护技术,2006,18(6):448-450.
[12] HADLEY R F. Microbiological anaerobic corrosion of steel pipeline[J]. Oil and Gas Tour,1939,38(19):92-96.
[13]张学元,王凤平,杜元龙,等.石油工业中的细菌腐蚀和防护[[J].石油与天然气化工,1999,28(1):52-56.
[14]李俊莉,白方林,卢永斌.新型希夫碱酸化缓蚀剂的合成及应用性能评价[J].腐蚀与防护,2012,33(9):787-791.
[15]左翔,蒋裕丰,迟挺.新型含长链烷基苯并三唑缓蚀剂的制备与性能研究[J].中国腐蚀与防护学报,2016,36(5):415-420.
[16] XIAO X S,YEN P T,SIMO O P. Evaluation of an organic corrosion inhibitor on abiotic corrosion and microbiologically influenced corrosion of mild steel[J]. Ind Eng Chem Res,2007,46(22):7 117.