含聚采出液中的复合防腐蚀技术  

Corrosion Mechanism and Protection of Production Fluid with Polymer

作　　者：刘德新[1] 张国荣[2] 赵修太[1] 刘洋[2] 孙楠[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,青岛266555 [2]中石化胜利油田孤东采油厂,东营257231

出　　处：《腐蚀与防护》2010年第3期234-236,247,共4页Corrosion & Protection

基　　金：国家十五科技攻关项目(2003BA613A-07-05)

摘　　要：针对含聚采出液加重抽油杆和管线腐蚀,室内试验研究了含聚采出液中腐蚀离子、聚合物以及细菌对碳钢的腐蚀影响程度。发现含聚采出液中高浓度HCO3-、Cl-和SRB是引起腐蚀的主要原因;采出液中聚合物不利于缓蚀剂缓蚀作用的发挥,反而引起SRB大量繁殖,间接引起腐蚀。采取聚合物降解剂+缓蚀剂+杀菌剂复合防腐蚀技术可以抑制含聚采出液的腐蚀。研制开发出一种固体缓释型综合缓蚀剂。The effects of corrosive ions, polymer and bacteria in the production fluid on the behavior and degree of metal corrosion were investigated. It is found that high concentration of HCO2^-, Cl^- and SRB might be the major causes for corrosion. The polymer in production fluid had bad effect on corrosion inhibitor and largely increased the production of SRB, and thus indirectly induced the metal corrosion. A combination technology of polymer degradation reagent, corrosion inhibitor and bactericide was presented. A solid multifunctional and controlling-released corrosion inhibitor was formulated.

关 键 词：含聚采出液 腐蚀 聚合物降解 缓蚀 杀菌 

分 类 号：TG174.4[金属学及工艺—金属表面处理] O647.2[金属学及工艺—金属学]