玻璃钢抽油杆断裂原因分析  

Cause Analysis on Fracture of Fiberglass Sucker Rod

作　　者：宋成立 宋文文[2] 李岩[2] 李娜[1] 梁明华 张华佳 SONG Chengli;SONG Wenwen;LI Yan;LI Na;LIANG Minghua;ZHANG Huajia(State key Laboratory for Performance and Structure Safety of 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公司,库尔勒841000

出　　处：《理化检验（物理分册）》2020年第8期70-73,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某油田在采油作业过程中发生玻璃钢抽油杆断裂事故,采用尺寸测量、玻璃化转变温度检测、树脂含量检测、力学性能试验及硬度测试等方法,对玻璃钢抽油杆的断裂原因进行了分析。结果表明:该玻璃钢抽油杆的抗拉强度低于要求值,在作业过程中承受反复拉压作用,玻璃纤维逐步断裂成劈散形貌;接箍与井壁的偏磨加速了杆体的断裂。The fracture accident of fiberglass sucker rod occurred in the process of oil production.The fracture causes of the fiberglass sucker rod were analyzed by means of size measurement,glass transition temperature detection,resin content detection,mechanical property test and hardness test.The results show that the tensile strength of the fiberglass sucker rod was lower than the required value,and it bore repeatedly tension and compression during operation.The fiberglass gradually fractured into a split and scatter shape.The eccentric wear between coupling and shaft wall accelerated the fracture of rod.

关 键 词：玻璃钢抽油杆 断裂 抗拉强度 劈散 偏磨 

分 类 号：TE933[石油与天然气工程—石油机械设备]