Locking ring system for fracture operation

摘要

A sliding valve that opens one or more fluid ports in a pipe chain, with one valve and one sliding hose at its longitudinal orifice. The body of the valve has one or more liquid ports in a part of the wellhead. The slide hose moves within the valve, between the closed port position that closes one or more fluid ports and the open bottom hole position that opens the ports. The sliding hose has a longitudinal orifice to receive a necklace,And / or a top ring and / or a protective hose. The top ring forms a top shoulder to avoid moving the bottom of the necklace with the sliding hose. Protective hose refers to the input of cement or film in the annular area between the valve orifice and the sliding hose, so as to ensure that the sliding hose can move freely to open these fluid ports.