浅谈弯曲条件下评价套管抗挤毁强度的试验方法

A Test Method For Evaluating the Anti-extrusion Strength of Casing under Bending Condition

随着油田的开发,地层愈来愈复杂,特别是盐膏层,由于地层蠕动对套管抗挤毁强度要求越来越高,而对在特定的条件下对套管抗挤毁强度的研究多采用有限元分析。本文通过全尺寸试验评价方法,探索一种在弯曲条件下评价套管抗挤毁的试验方法,对大曲率井的开发有着重要的指导意义。

In the course of oilfield development,more and more complex strata,such as salt-paste layer,have emerged.Because of formation creep,the strength requirement of casing is higher and higher.In this study,the casing strength of complex stratum is checked by finite element analysis.In this paper,a test method to evaluate casing anti-extrusion damage under bending condition is explored by means of full-size test evaluation method,which is of great guiding significance to the development of large curvature well.