采用缓蚀剂复配提高油井缓蚀效果试验研究  

Experimental investigation of corrosion inhibiting effect by compound corrosion inhibitor.

作　　者：王志强[1] 南庆义[1] 张伟[1] 田中太[2] 王胜利[1] 曹瑞民[1] 

机构地区：[1]华北油田采油工艺研究院,河北任丘062552 [2]华北油田采油二厂,河北霸州065709

出　　处：《石油钻采工艺》2006年第B10期42-45,共4页Oil Drilling & Production Technology

摘　　要：根据华北油田岔19断块油井抽油杆、管腐蚀结垢现象，分析了油井腐蚀结垢的主要影响因素；采用缓蚀剂进行复配，以达提高缓蚀剂缓蚀效果的目的。在单一缓蚀剂优选的基础上，采用缓蚀效果较好的2种水溶性有机缓蚀剂CY03（聚醚类）和CY05（咪唑啉类）1：1复配，在缓蚀剂总浓度不变的条件下，复配缓蚀剂比单一缓蚀剂的缓蚀率提高5个百分点以上，并且复配缓蚀剂与阻垢剂HEDP、ATMP、PBTCA有较好的配伍性。经室内试验，筛选缓蚀阻垢配方的缓蚀率在75％以上，阻垢率在95％以上。于2005年6月进行现场试验，油井水中总铁含量由加药前的2．0mg／L降至0．1-0．5mg／L，油井平均检泵周期由140d延长至300d，取得较好的缓蚀阻垢效果。according to the occurrence of corrosion and scaling of pump rod and tubing in Cha 19 Block of Huabei Oilfield, the main influential factors of corrosion and scaling were analyzed. Several corrosion inhibitors were combined to improve the corrosion inhibiting effect. Based on the optimization of single corrosion inhibitor, two kinds of water solubility corrosion inhibitor, CY03 (polyether) and CY05 (imidazoline) were combined with 1:1 proportion. The corrosion inhibiting rate of combined corrosion inhibitor was 5% higher than that of single inhibitor under the same overall concentration. At the same time, the combined corrosion inhibitor has good compatibility with scale inhibitor such as HEDP, ATMP and PBTCA. The selected corrosion and scale inhibitor owns more than 75% corrosion inhibiting rate and 95% scale inhibiting rate. The total iron level of the water in oil wells decreased from 2.0 mg/L to 0.1～0.5 mg/L when this type of inhibitor was added in June,2005. The average pump inspecting period was prolonged from 140d to 300d, and good scale and corrosion inhibiting capability has been acquired.

关 键 词：缓蚀剂复配 提高缓蚀效果 阻垢剂 试验方法 华北油田 

分 类 号：TE982[石油与天然气工程—石油机械设备]