以井下关井情况为例,分析进行高压井测试时油管发生螺旋弯曲的可能性、其主要影响因素以及可能引起的施工问题。计算结果表明,进行高压油气井测试时油管容易发生螺旋弯曲,测试液密度、产物密度、套管压力、井底压力等均影响油管弯曲长度。油管弯曲会改变轴向力分布,减小油管轴向长度,是影响井下安全性的重要因素。 Taking the case of downhole shut-in well as an example, the possibility of spiral bending of tubing during high-pressure well testing is analyzed, and the main influencing factors and possible construction problems are analyzed. The calculation results show that the tubing is susceptible to helical bending when tested in high pressure wells. The test fluid density, product density, casing pressure and bottom hole pressure all affect the tubing bend length. Tubing bending will change the axial force distribution, reduce the axial length of the tubing, which is an important factor affecting the safety of underground.