深层气井管柱腐蚀失效分析与防腐措施的可行性研究  

Corrosion Failure Analysis of Pipe String in Deep Gas Well and Feasibility of Anti-corrosion Measures

作　　者：黄显辉 Huang Xianhui(Oil Testing Branch,PetroChina Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163412,China)

机构地区：[1]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《石油工业技术监督》2021年第11期1-4,共4页Technology Supervision in Petroleum Industry

摘　　要：针对XS气田3口深层气井中不锈钢油管在完井前出现腐蚀开裂甚至管柱断裂的情况,采用扫描电镜、模拟实验等方法,从钢管材质、温度、完井液性能以及浸泡时长等方面,研究了不锈钢钢管在完井液中的腐蚀影响因素,提出了优化管柱结构、优选完井液等建议,通过实践运用,较好地解决了深层气井完井管柱腐蚀失效问题。In view of the corrosion cracking and even pipe string fracture of stainless steel tubing in three deep gas wells in XS gas field before completion,the corrosion influencing factors of stainless steel pipe in completion fluid are studied by means of scanning electron microscope and simulation experiment from the aspects of steel pipe material,temperature,completion fluid performance and immersion time,and suggestions on optimizing pipe string structure and completion fluid are put forward.The practical application of the suggestions solves the problem of corrosion failure of completion string in deep gas wells.

关 键 词：油管 完井液 点蚀 应力腐蚀开裂 

分 类 号：TE983[石油与天然气工程—石油机械设备]