Drillable ball seat sleeve + Open Hole Segmented transformation technology
The Structure of the drillable ball seat sliding sleeve open hole segment transformation process tubing string is safe and easy to construct. One trip drilled, the task of running in and sealing the tubing strings can be completed.
The frac sleeve is in closed state when it run into the well. When the ball is acting on the surface of the ball seat, pump pressure made the piston move, the path of the frac sleeve has been open, forming a passage between the ground and the bore of the frac sleeve.넶0 2018-08-13