某气井套管螺纹粘扣原因  

Causes of thread gluing of casing thread in a gas well

作　　者：王帅 夏晓辉 柳楠[2] 肖峰[2] 邝献任 WANG Shuai;XIA Xiaohui;LIU Nan;XIAO Feng;KUANG Xianren(State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute,Xi’an 710077,China;PetroChina Tarim Oilfield Company,Korla 841000,China)

机构地区：[1]中国石油集团石油管工程技术研究院,石油管材及装备材料服役行为与结构安全国家重点实验室,西安710077 [2]中国石油塔里木油田分公司,库尔勒841000

出　　处：《理化检验（物理分册）》2022年第8期69-72,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：国家重大科技专项课题(2016ZX05020-002)。

摘　　要：针对某气井套管螺纹粘扣的问题,采用宏观观察、螺纹参数测量、扫描电镜分析等方法对其进行原因分析,并对同类型新套管进行了上、卸扣试验。结果表明:该套管的螺纹参数符合要求;套管螺纹磷化层厚度分布不均匀和套管抗粘扣性能不好是该套管螺纹粘扣的主要原因。In view of the problem of thread gluing of casing thread in a gas well, the macro observation, thread parameter measurement and scanning electron microscope analysis were used to analyze its causes. The screw on and screw off test was carried out on the same type of new casing. The results show that the thread parameters of the casing met the requirements. The uneven thickness distribution of casing thread phosphating layer and poor anti-sticking performance of casing were the main reasons for the thread gluing of casing thread.

关 键 词：套管 粘扣 螺纹参数 上、卸扣 磷化层 

分 类 号：TG115.5[金属学及工艺—物理冶金]