Locking backpressure valve
AssigneeBaker Hughes Oilfield Operations LLC
InventorsLarry Thomas Palmer, Erik Van Steveninck, Steve Wilson, III
Life of this patent
Estimating the term…
Abstract
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve cartridge arranged in the flowbore. The backpressure valve cartridge includes a valve seat and a flapper valve pivotally mounted relative to the valve seat. The backpressure valve cartridge is shiftable along the longitudinal axis to shift the flapper valve between a first position, wherein the flapper valve rests on the valve seat, and a second position, wherein the flapper valve is pivoted away from the valve seat.
Claims19
A downhole tool comprising:
- a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis;
- a backpressure valve cartridge arranged in the flowbore, the backpressure valve cartridge including a valve seat and a flapper valve pivotally mounted relative to the valve seat, wherein the backpressure valve cartridge is shiftable along the longitudinal axis to shift the flapper valve between a first position, wherein the flapper valve is free to pivot relative to the valve seat, and a second position, wherein the flapper valve is pivoted away from the valve seat and maintained in an open configuration;
- and
- a stationary sleeve arranged in the flowbore and fixed relative to the inner surface.
A resource exploration and recovery system comprising:
- a first system;
- a second system including at least one tubular extending into a formation, the at least one tubular supporting a downhole tool comprising:
- a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis;
- a backpressure valve cartridge arranged in the flowbore, the backpressure valve cartridge including a valve seat and a flapper valve pivotally mounted relative to the valve seat, wherein the backpressure valve cartridge is shiftable along the longitudinal axis to shift the flapper valve between a first position, wherein the flapper valve is free to pivot relative to the valve seat, and a second position, wherein the flapper valve is pivoted away from the valve seat and maintained in an open configuration;
- and
- a stationary sleeve arranged in the flowbore and fixed relative to the inner surface.
A method of operating a backpressure valve arranged in a tubular having an inner surface defining a flowbore, the method comprising:
- shifting a backpressure valve cartridge including a valve seat and a flapper valve along a longitudinal axis of the flowbore along a stationary sleeve fixedly connected to the inner surface causing the flapper valve to transition from a first position, wherein the flapper valve rests on the valve seat to a second position, wherein the flapper valve is pivoted away from the valve seat;
- and
- locking the flapper valve in the second position with one or more collet fingers that snap into a recess formed in the inner surface downhole of the flapper valve and the stationary sleeve.
Dependencies are inferred from the claim text.