摘要
某高压高产气井试气用油管在试提中发生管体断裂掉落,并有管体挤毁和严重刺穿现象。通过对油管进行宏观分析、理化性能分析、微观金相分析试验,以确定油管发生断裂掉落以及挤毁和刺穿的原因。结果表明:在放喷求产过程中油管内存在气、液、固等多相流,可能会形成瞬时负压,增加了油管被挤毁变形的可能性;随后造成流道堵塞,油管内冲蚀严重,壁厚变薄发生刺穿,最后因拉伸强度不足而发生断裂。
One of the tubing used in the gas well under the high pressure and high production has occurred in the split,fall,collapse and severe diapirism of tube body in the trial extraction process.This paper have a test of tube so that certain the reason that split,fall,collapsed and se-vere diapirism of tube body by the analysis of the macroscopic,physical and chemical properties, microscopic metallographic.The result shows that gas,liquid pipe ram and solid multiphase flow in tube may be formatted the instantaneous negative pressure and increase the likelihood of the tubing were collapsed in the process of the gas testing and production.Then it has resulted in clogging,severe erosion,thinning wall and piercing in tube.Finally the tube has occurred in frac-ture because of the tensile strength.
出处
《石油矿场机械》
2014年第9期52-55,共4页
Oil Field Equipment
关键词
高压高产气井
油管
冲蚀
抗拉强度
the high pressure and high production gas well
tubing
erosion
tensile strength
