Research on Interlayer water injection pressure limit

With the development of oil field into the late period of high water cut, the influence of casing damage on oil field development attracts more and more attention. So it's time to begin studying how to prevent and control casing damage. In the non oil layer casing damage well, 49.7% in A - B Interlayer of casing damage, and it is widely distributed in the SII block. At the same time, it seriously affect the development effect of upper reservoir in SII formation. In this paper, in view of the interlayer lithology recognition, analyze its mechanism of casing damage and discuss the reasonable limit of water injection pressure for casing damage control.