Locking ring system for use in fracking operations
AssigneeSc Asset Corporation
InventorSean P. Campbell
Life of this patent
Estimating the term…
Abstract
A sliding valve for opening one or more fluid ports in a piping string, having a valve body and a sliding sleeve in a longitudinal bore thereof. The valve body has one or more fluid ports in an uphole portion thereof. The sliding sleeve is movable in the valve body between an uphole closed position closing the one or more fluid ports and a downhole open position opening the ports. The sliding sleeve has a longitudinal bore for receiving a collet, and/or a stop ring and/or a protective sleeve. The stop ring forms a stop shoulder for preventing downhole movement of the collet relative to the sliding sleeve.
Claims20
A sliding valve for opening one or more fluid ports in a piping string, comprising:
- a valve body having a longitudinal bore, the valve body comprising said one or more fluid ports on an uphole portion of a sidewall thereof;
- and
- a sliding sleeve slidably received in the longitudinal bore of the valve body and movable between an uphole closed position closing the one or more fluid ports and a downhole open position opening the one or more fluid ports;
- wherein the sliding sleeve comprises:
- a longitudinal bore;
- a sleeve-profile on an inner surface of the sliding sleeve for mating a unique locking profile of a collet member when the collet member is received in the longitudinal bore of the sliding sleeve;
- and
- a separate stop ring, received in the sliding sleeve, the stop ring having on an uphole side edge thereof a stop shoulder adapted to abut a portion of the unique locking profile of the collet member for preventing downhole motion of the collet member relative to the sliding sleeve, when and only when the collet member is received in the longitudinal bore of the sliding sleeve and said unique locking profile thereon mates said sleeve-profile;
- wherein at least said stop shoulder of said stop ring is hardened to a hardness greater than the hardness of said sleeve profile or comprises a material having a hardness greater than the hardness of the sleeve profile.
A sliding valve for opening one or more fluid ports in a production string, comprising:
- a valve body having a longitudinal bore, the valve body comprising one or more fluid ports on an uphole portion of a sidewall thereof;
- a sliding sleeve having a longitudinal bore and a sleeve-profile on an inner surface thereof, the sliding sleeve slidably received in the longitudinal bore of the valve body and movable between an uphole closed position closing the one or more fluid ports and a downhole open position opening the one or more fluid ports;
- and
- a collet member, receivable in the longitudinal bore of the sliding sleeve, having a unique locking profile, said unique locking profile matingly engageable with said sleeve-profile;
- wherein the sliding sleeve further comprises:
- a separate stop ring, received therein, the stop ring forming a first stop shoulder for preventing downhole motion of the collet member relative to the sliding sleeve, when and only when the collet member is received in the longitudinal bore of the sliding sleeve and said unique locking profile of said collet member mates said sleeve-profile of said sleeve member;
- wherein at least said first stop shoulder of said stop ring is hardened to a hardness greater than the hardness of said sleeve profile or comprises a material having a hardness greater than the hardness of the said sleeve profile.
Dependencies are inferred from the claim text.