110钢级抗挤抗硫套管性能试验研究

Analysis on Properties of 110 Grade Collapse and SSC Resistance Casing

对110钢级(屈服强度达到758MPa)抗挤抗硫套管、常规套管和高抗硫套管进行了材料性能试验和挤毁试验,并进行了性能对比分析。结果表明:通过降低S元素的含量、调整合金元素的配比以及增加几何尺寸精度,可以生产出具有高抗挤毁性能的抗硫套管。在高抗硫套管的加工过程中,提高几何尺寸精度并降低残余应力可以改善高抗硫套管的抗挤毁性能,进而保证高抗硫套管在使用中的安全性。

Comparative analysis was made on 110 grade （yield stress reached 758 MPa） collapse and SSC （sulfide stress-cracking） resistance casing,Pll0 casing and high SSC resistance casing a- bout the properties of material and collapse resistance. The results show that collapse and SSC re- sistance casing can be manufactured through controlling the content of S element, adjusting the ratio of alloy elements, controlling the geometry accuracy and reducing residual stress. Increasing the geometry accuracy and reducing residual stress of high SSC resistance casing can improve their collapse resistance property and strengthen their safety in use.