油田交联剂注入设备腐蚀机理研究  

Corrosion mechanism of injection system for oilfield crosslinking chemical.

作　　者：董家梅[1] 尹仲松 孙绪新[3] 

机构地区：[1]大庆石油学院 [2]大庆油田有限责任公司第二采油厂 [3]胜利石油管理局物探公司仪修厂

出　　处：《石油机械》2003年第1期11-13,2,共3页China Petroleum Machinery

摘　　要：通过对交联剂注入系统的一系列实验研究 ,获得了与腐蚀密切相关的交联剂成分因素。在此基础上结合材料性能 ,分析了注入设备在交联剂介质中的腐蚀机理 ;测定了哈氏合金、316L、 1Cr18Ni9Ti、普通不锈钢等 4种材料的腐蚀速率 ;提出了延长交联剂注入系统使用寿命的措施。初步断定该系统的腐蚀属电化学腐蚀 ,孔蚀是导致该设备失效的主要方式。含钼金属具有较强的抗氯离子小孔腐蚀能力 ,建议在交联剂注入系统中采用含钼高的金属 。By means of a series of experimental study of the injection system for oilfield crosslinking chemical, the composition of the crosslinking chemical reletive to corrosion is made clear. The corrosion mechanism of the injection system in the crosslinking chemical medium is analyzed. The corrosion rate of four kinds of materials are determined. The measures for improving the service life of the injection system of the crosslinking chemical are put forward. It is deduced that the corrosion of the injection belongs to electrochemical corrosion, and pitting corrosion is the main factor leading to the system failure. It is suggested that the metal with high Mo content should be used for the injection system since it has high pitting resistance.

关 键 词：油田 交联剂 注入设备 腐蚀机理 研究 

分 类 号：TE934.9[石油与天然气工程—石油机械设备]