Finite Element Analysis for Capacity of Anti-cleanup Casing in Water Injecting Well

In the oilfield of injecting of water to develop,the surplus thickness of perforation casing and the asymmetry confining pressure of the stratum directly affected the well cleanup pressure.The functional relation between the surplus thickness and using time were given adopting the probability statistics method.Under the consideration of the material nonlinear with transient effect,the carrying capacity of the various thickness casing and various loads were ensured,using the finite element.The result can offer the theory basis to technology of anti-cleanup well.