The application discloses a bridge plug slip of 65mm outer
diameter expansion to 114.3mm for
shale gas casing deformation well segmented fracturing, which comprises a
tailstock, double-inclined-plane push block groups, a slip base, a slip push block, a slip tooth, a center rod, a fixed pin, a starting pin, a
thrust block and a
limiter. In the anchoring process, the two groups of double-inclined-plane push block groups are symmetrically arranged on the left and right sides of the slip base, the slip push block moves downward along the center rod, drives the two groups of double-inclined-plane push block groups to produce
radial displacement, when the wedge-shaped block in the double-inclined-plane push block reaches the
maximum displacement in the wedge-shaped groove of the slip base, the slip base and the right double-inclined-plane push
block group simultaneously displace downward, drives the slip base to produce
radial displacement, until the slip tooth is anchored stably with the casing, the limiting elastic block is bounced into the center rod, preventing the slip base from rebounding. The bridge plug slip is expanded from the initial outer
diameter of 65mm to a
large range of 114.3mm, the anchoring of the slip is stable and reliable, and the bridge plug can smoothly pass through when the casing is severely deformed in the fracturing operation.