晋45断块高温油井腐蚀化学治理技术

Research and application of chemical control technology for high temperature well corrosion in Fault-block Jin45

杜清珍 孙玉民 李翠琴 魏爱军 杨梅红 杨俊怀

DU Qingzhen SUN Yumin LI Cuiqin WEI Aijun YANG Meihong YANG Junhuai

华北油田公司采油工程研究院，河北任丘?062552 华北油田公司第五采油厂，河北辛集052300 华北油田公司环境监测中心站，河北任丘?062552 华北油田公司二连分公司边采作业区，内蒙古锡林浩特?026017

Production Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China No.5 Oil Production Plant,Huabei Oilfield Company, Xinji 052300, China Environment Monitoring Center, Huabei Oilfield Company, Renqiu 062552, China Operation Area, Erlian Branch Company, Huabei Oilfield Company, Xilin Hot 026017, China

针对晋45断块高温油井腐蚀严重影响油田正常生产问题，在明确油井腐蚀原因基础上，通过正交实验有针对性地研制出了以咪唑啉衍生物、有机胺等组分为主，辅以耐高温氟碳咪唑啉组分的YHZ系列缓蚀剂，其缓蚀性能良好，平均缓蚀率达90%，解决了高温油藏（大于100 ℃）油井井筒腐蚀问题，经现场应用取得了较好效果。

Regarding the problem of high temperature well corrosion serious influencing the normal production in oilfields, figuring out the reason to well corrosion, an YHZ series corrosion inhibitor was developed through orthogonal experiment. The formula is mainly the imidazoline derivatives and organic amine group, supplemented by high temperature resistant fluorocarbon imidazoline group. This agent shows good corrosion inhibition performance with average corrosion inhibition rate of 90 percent, which solve the problem of well corrosion in reservoirs with high temperature （higher than 100 degree）. Field application has achieved obvious effect and has shown a longer maintenance period of pumping wells.