非均布载荷下石油套管抗挤强度问题研究

Research on Collapse Strength of Oil Casing under Non-uniform Loads

对石油套管承受非均匀挤压应力作用时的抗挤强度问题进行了理论分析和有限元数值模拟,理论解与有限元结果一致,弥补了目前工程中仅能依靠有限元方法进行仿真和API标准只能给出均布载荷下套管强度的不足,为实际工程提供理论指导。

When non-uniform loads are applied to the oil casing,the API standards can＇t be employed to study the effect of the non-uniformity of the loads on the collapse strength of the oil casing,and the finite element methods are generally used.Stress equations for the oil casing under non-uniform loads were derived.Both theoretical analysis and finite element calculation of the strength of the oil casing under non-uniform loads are performed.The theoretical results are consistent with those of the simulation analysis and can be applied to engineering.