胜坨油田抽油杆腐蚀机理分析及新型防腐技术研究与应用

Analysis of Sucker Rod Corrosion Mechanism and Research and Application of New Anticorrosion Technology in Shengtuo Oilfield

摘要: 通过对胜坨油田50年开发过程中，抽油杆腐蚀现象进行扼要分析，总结出导致抽油杆失效的原因，针对抽油杆腐蚀现状，提出应用具有防腐能力的新型连续抽油杆、应用新型不锈钢型加重杆平衡技术和应用井口加缓蚀剂技术以及IPR曲线分析技术来减少抽油杆的腐蚀，耐腐蚀性能和耐疲劳性能均大幅度提高，现场应用后取得了良好的效果，为特高含水后期油田抽油杆防腐技术提供了较好的借鉴。

Abstract: Through a brief analysis of the sucker rod corrosion phenomenon during the 50-year develop-ment of Shengtuo Oilfield, the reasons leading to the failure of the sucker rod are summarized. In view of the current situation of sucker rod corrosion, the application of new continuous sucker rods with anti-corrosion ability, the application of new stainless steel weighting rod balancing technology, the application of wellhead corrosion inhibitor technology and IPR curve analysis technology are proposed to reduce the corrosion of sucker rods and resist corrosion. Both corrosion resistance and fatigue resistance have been greatly improved, and good results have been achieved after field application, which provides a good reference for the anti-corrosion technology of sucker rods in late-stage oilfields with ultra-high water cut.