本文介绍了高压气井完井管柱的结构,优选了二维井眼完井管柱的轴向力、外挤力和内压力模型,对高压气井完井管柱的受力进行了理论分析;根据鲁宾斯基管柱力学模型,分析了完井管柱的活塞效应,螺旋效应,鼓胀效应,得出了三种效应下对应的效应力计算方法。 This paper introduces the structure of high pressure gas well completion string, and optimizes the axial force, external squeezing force and internal pressure model of the two-dimensional wellbore completion string, and makes a theoretical analysis of the force of completion string of high pressure gas well; According to the Rubensky column mechanical model, the piston effect, spiral effect and bulging effect of the completion string are analyzed, and the corresponding calculation methods of effective stress under the three effects are obtained.