新型高效油井缓蚀剂的研制及在王179采油井上的应用  

Study of a new corrosion inhibitor and the application of Wang 179 oil recovery well

作　　者：霍光春 白连安 何强[1] 李俊莉[2,3] 张颖 程雯[2,3] 王小军 HUO Guang-chun;BAI Lian-an;HE Qiang;LI Jun-li;ZHANG Ying;CHENG Wen;WANG Xiao-jun(Xingzichuan Oil Recovery Plant of Yanchang Oil Field Co.,Ltd.,Yan’an 717400,China;Shaanxi Research Design Institute of Petroleum and Chemical Industry,Xi’an 710054,China;Shaanxi Provincial Key Laboratory of Petroleum Fine Chemicals,Xi’an 710054,China)

机构地区：[1]延长油田股份有限公司杏子川采油厂,陕西延安717400 [2]陕西省石油化工研究设计院,陕西西安710054 [3]陕西省石油精细化学品重点实验室,陕西西安710054

出　　处：《应用化工》2018年第12期2657-2660,共4页Applied Chemical Industry

基　　金：2017陕西省重点研发计划项目(2017GY-171);陕西延长石油(集团)有限责任公司<基础研究项目>(ycsy2017JCYJ-A-07)

摘　　要：以山梨醇磷酸酯缓蚀剂(SPA))、有机膦酸阻垢缓蚀剂(OPI)、醛类杀菌剂(GLU)和脂肪醇聚氧乙烯醚(AEO)为原料,研制出了一种新型高效缓蚀剂Inh-SPA,应用静态挂片失重法和电化学法评价了Inh-SPA的缓蚀性能和电化学机理。结果表明,由SPA 7 g,OPI 2 g,GLU 5 g,AEO 2 g时,复配的缓蚀剂Inh-SPA缓蚀效果最优;极化曲线表明,Inh-SPA缓蚀剂是对阴阳两极均有抑制作用的阴极型缓蚀剂;现场监测表明,连续加药能够有效的降低水中的铁离子含量,能够降低断杆次数和接杆数量,明显降低维修费用和换杆费用。A new and efficient corrosion inhibitor Inh-SPA was studied as raw materials of sorbitol phosphate( SPA),phosphonates( OPI),aldehydes bactericide( GLU) and fatty alcohol-polyoxyethylene ether( AEO). The corrosion inhibition and electrochemical mechanism of Inh-SPA were evaluated by static hanging weightlessness method and electrochemical method. The results showed that the corrosion inhibition effect of Inh-SPA is the best when the dosage of SPA is 7 g,the dosage of OPI is 2 g,the dosage of GLU is 5 g and the dosage of AEO is 2 g. Polarization curves showed that the Inh-SPA inhibitor was a cathode-type inhibitor based on suppressing both the anode and the cathode. Site monitoring results found that continuous dosing can effectively reduce the content of iron ions. The frequency of broken rods and the number of connecting rods were reduced by the continuous quantitative addition of corrosion inhibitor and the cost of repaired and exchanged rod were obviously reduced.

关 键 词：抽油杆 油套管 缓蚀剂 极化曲线 

分 类 号：TQ317.9[化学工程—高聚物工业] TE39[石油与天然气工程—油气田开发工程]