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US 7,063,156 B2Granted
Tubing fill and testing valve
AssigneeSchlumberger Technology Corporation
InventorsDinesh R. Patel, David E. Sask
Life of this patent
Estimating the term…
Abstract
The present invention provides for a valve in a tubing string that allows the tubing string to fill with well fluids as the string is assembled and lowered into a well bore, but can be used to check pressure integrity of the tubing string during various stages of the assembly.
Claims15
A completion system for use in a well, the system comprising:
- a housing having a passageway therethrough;
- a valve module located in the housing and having a valve to allow or block fluid flow through the passageway;
- a power module moveably mounted to the housing, the power module comprising a power sleeve and a liner sleeve attached to the power sleeve;
- and
- a tubing mounted to the valve and comprising at least one port to selectively allow bypass of the valve, wherein
- the valve does not significantly impede entry of well bore fluids into the passageway from below the valve, and
- the power module is adapted to first engage the valve with the power sleeve to open the valve and after the opening of the valve, insert the liner sleeve through a seat of the valve to secure the valve in the open position.
4 more elements
A flapper valve usable with a subterranean well, the flapper valve comprising:
- a flapper and a flapper actuator in which the flapper actuator causes the flapper to rotate toward the actuator as the actuator opens the flapper valve, the flapper adapted to selectively control well fluid communication between a passageway located uphole of the flapper and a location downhole of the flapper and the flapper adapted to not significantly impede entry of well fluid from the downhole location into the passageway, wherein
- the actuator comprises a sleeve to exert a force on the flapper to open the flapper and cause the flapper to rotate toward the sleeve as the actuator opens the flapper valve, and the actuator comprises another sleeve to move into a valve seat associated wit the flapper in response to the actuator opening the flapper valve.
A method usable in a subterranean well, the method comprising:
- placing a valve actuator on the same side of a flapper of a flapper valve as the opening direction of the flapper to selectively move the flapper to control well fluid communication between a location downhole of the flapper and a passageway located uphole of the flapper;
- constructing the flapper valve so that the flapper does not significantly impede entry of a well fluid from the downhole location into the passageway;
- moving a sleeve to exert a force on the flapper to open the flapper and cause the flapper to rotate toward the sleeve as the actuator opens the flapper valve;
- and
- moving another sleeve into a valve seat associated with the flapper in response to the opening of the flapper valve.
2 more elements
Dependencies are inferred from the claim text.