Study on formation damage mechanism of carbonate reservoir in Shunbei No.2 area of northwest oil field

Abstract A series of experiments were carried out to evaluate and analyze the damage mechanism carbonate reservoir in Shunbei No.2 Area, Xinjiang, China. According analysis lithology physical properties, combined with fluid characteristics environmental characteristics, potential factors formation core analyzed. The is as follows: solid phase particle intrusion blockage, stress sensitivity strong water lock damage. effect pressure time on permeability was eliminated by fracture stability correction. Fracture correction used sensitivity. There no velocity sensitive core, but weak salt damage, moderate alkali