生产套管试压作业中螺纹脱扣原因分析  

Causes of the Thread off in Production Casing Pressure Test Operation

作　　者：曹峰 刘庆 索航 李德君 姚欢 白强 

机构地区：[1]中国石油集团石油管工程技术研究院,陕西西安710077 [2]中石油煤层气有限责任公司,北京100028 [3]中石油煤层气有限责任公司临汾分公司,山西临汾042200

出　　处：《石油管材与仪器》2016年第4期46-50,共5页Petroleum Tubular Goods & Instruments

摘　　要：通过对脱扣套管材料理化性能分析、宏观分析、微观分析,结合现场作业过程分析,得出导致套管脱扣的直接原因为粘扣,导致螺纹粘扣的原因有接箍钢级不符合标准要求、上扣作业中夹持位置不当以及管柱压力测试时压力值偏大。还对规范下套管、试压作业程序、加强套管质量管理提供了意见与建议。Through the thread off casing material and performance analysis,macro analysis,micro analysis,combined with field operation process analysis,it is concluded that the direct cause of thread off casing is gluing. The cause of thread gluing is that the steel grade can not meet the standard requirements,thread work clamping position is not right,and pressure value is too large in tube column pressure test operation. The suggestions and advices are given to the casing running into the wellbore,pressure test operation,and the casing quality management.

关 键 词：套管 脱扣 粘扣 钢级 试验压力 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]