Based upon the elasticity theory, a mechanical model for the casing pipe was built and the relationship between residual stress and compression strength was developed by FEM.
The higher the elasticity is, the lower the saturation of residual oil will be.
实验条件相似的流体，其弹性越大，驱替后残余油饱和度越低。
3
The modified removal method for measuring residual stress in thick pre-stretched aluminum plates is proposed and the stress-strain relation matrix is deduced by elasticity theory.