Sealing Slide Sleeve

Design:

The sealing slide sleeve is used in conjunction with the bottom ball seat, and is a tool used for oil well matching on the pipe column. It will act as a one-way valve, and liquid can only flow from the lower part of the sealing slide sleeve to the upper part.

When the pressure difference between the upper and lower pipelines (oil pipes) of the sealing slide sleeve is greater than 16MPa, the sealing slide sleeve shear pin is cut off, the ball and ball seat fall off, the upper and lower pipelines (oil pipes) of the sealing slide sleeve are connected, and the oil drain hole is opened. At this time, the sealing slide sleeve plays a pressure relief role.