Due to wear failures caused by tubing string vibrations in high-yield gas wells, an orthogonal wear experiment was performed on the 13Cr-L80 tubing string. The influence of contact load, friction frequency, wear time, completion fluid density, and reciprocating stroke length on the wear characteristics of the tubing string were effectively analyzed using range analysis, variance analysis and the control variable methods. The results demonstrate that, the wear patterns of the tubing-casing were primarily abrasive and adhesive wears, with minimal corrosion wear. In-field operations, the service life of the tubing string in high-yield gas wells can be effectively augmented by reducing the contact load and longitudinal vibration displacement of the tubing-casing, maintaining the vibration frequency of the tubing string below 1.5 Hz, and utilizing a completion fluid with a higher density (approximately 1.2 g/cm³). The wear amount and friction coefficient of the tubing string are primarily influenced by the contact load and reciprocating stroke length, respectively. Moreover, the effect significances of the contact load and reciprocating stroke length were particularly significant and significant, respectively. These results provide useful guidance for designing and implementing approaches to improve the service life of tubing strings in high-yield gas wells.

由于高产气井中油管柱振动引起的磨损故障，因此对13Cr-L80油管柱进行了正交磨损试验。使用范围分析，方差分析和控制变量方法有效地分析了接触载荷，摩擦频率，磨损时间，完井流体密度和往复行程长度对油管柱磨损特性的影响。结果表明，油管套管的磨损方式主要是磨料磨损和粘着磨损，腐蚀磨损最小。在野外作业中，可通过减少油管套管的接触载荷和纵向振动位移，并保持油管柱的振动频率低于1.5 Hz，来有效地延长高产气井中油管柱的使用寿命，³）。管柱的磨损量和摩擦系数分别主要受接触载荷和往复行程长度的影响。而且，接触载荷和往复行程长度的影响意义分别是特别重要的和显着的。这些结果为设计和实施改善高产气井中油管柱使用寿命的方法提供了有用的指导。