Telescoping Swivel Sub
Definition - What does Telescoping Swivel Sub mean?
Telescoping Swivel Sub is an inline tubing device which is used to provide orientation between two sets of tubing assemblies. The swivel gets locked once the alignment between two tubing assemblies is set. The locking system in such swivel sub has series of teeth that provide a high loading torque thereby providing positive locking mechanism.
Petropedia explains Telescoping Swivel Sub
Telescoping swivel subs are operated by winding a lock nut back approximately to 0.5 inch to allow disengagement of the upper body and collar. The upper and lower bodies are then oriented to the desired position and the collar and upper body set together again. The lock nut is then made up tight and locked with screws. Typical uses are alignment of two down-hole tubing units such as dual string packers or tubing-to-hanger make-up. It is available for standard or sour service conditions and is configured with standard tubing connections.