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US 6,684,958 B2Granted
Flapper lock open apparatus
AssigneeBaker Hughes Incorporated
InventorsRonald D. Williams, Grant R. Thompson, James T. Sloan, Brian S. Shaw, John L. McCoy, Jr., Barry L. Brown
Life of this patent
Estimating the term…
Abstract
Various techniques for holding open an SSSV using expansion technology are disclosed. A sleeve is delivered to the SSSV and expanded mechanically or hydraulically to deposit the deformed sleeve in position over a flapper or against a flow tube holding the flapper in the open position.
Claims14
A method for locking open a subsurface safety valve, comprising:
- delivering expandable member into the subsurface safety valve;
- putting the subsurface safety valve into an open position;
- and
- expanding said expandable member with an applied force to secure its placement while holding the subsurface safety valve open;
- bending said expandable member over at least one shoulder to improve longitudinal fixation to the subsurface safety valve.
2 more elements
A method for locking open a subsurface safety valve, comprising:
- delivering expandable member into the subsurface safety valve;
- putting the subsurface safety valve into an open position;
- and
- expanding at least a portion of said expandable member with an applied force to secure its placement while holding the subsurface safety valve open;
- providing a plurality of collet fingers extending from said expandable member and terminating in a head;
- wedging said heads in the subsurface safety valve to secure the open position.
3 more elements
A method for locking open a subsurface safety valve, comprising:
- delivering expandable member into the subsurface safety valve;
- putting the subsurface safety valve into an open position;
- and
- expanding at least a portion of said expandable member with an applied force to secure its placement while holding the subsurface safety valve open;
- mounting said expandable member on a resilient member in an actuating tool;
- applying a compressive force to said resilient member;
- and
- forcing the expandable member to expand with said resilient member.
5 more elements
Dependencies are inferred from the claim text.