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US 2017/0321519 A1Published application
Downhole completion tool
AssigneePetroQuip Energy Services, LLC
InventorsKevin Scott Kippola, Tracy Dean Blanton, Todd Ulrich Chretien, William John Darnell
Life of this patent
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Abstract
A downhole tool and method of operation thereof is provided. The downhole tool may be configured to permit fluid communication between a combined flowbore of the casing string and the downhole tool and the subterranean formation or wellbore, or both, after a pressure test has been completed, a second threshold pressure is reached or applied, and a third threshold pressure has been applied to the downhole tool.
Claims20
A downhole tool, comprising:
- a housing having a longitudinal axis and defining a plurality of fluid apertures circumferentially disposed about the longitudinal axis;
- an inner annular casing disposed in the housing and defining a flowbore extending axially therethrough, the housing and the inner annular casing defining an annular space therebetween, and the inner annular casing further defining a casing flowpath and a port configured to fluidly couple the flowbore and the casing flowpath;
- a first piston disposed in the casing flowpath;
- an annular sleeve disposed in the annular space and coupled to or integral with the first piston, the annular sleeve configured to be displaced in a first direction by the first piston at a first pressure applied to the flowbore;
- a biasing member disposed in the annular space and configured to displace the annular sleeve in a second direction at a second pressure applied to the flowbore;
- and
- a second piston at least partially disposed in the annular space and configured to be displaced in the first direction by a third pressure applied to the annular space via the flowbore, such that the plurality of fluid apertures and the flowbore are fluidly coupled.
4 more elements
A method of servicing a subterranean formation, comprising:
- applying a first pressure to a first piston via a flowbore defined at least in part by an inner annular casing of a downhole tool, the downhole tool comprising a housing encircling the inner annular casing such that an annular space is defined therebetween;
- displacing an annular sleeve coupled to or integral with the first piston in a first direction via a force provided by the first pressure applied to the first piston;
- decreasing the first pressure in the flowbore to a second pressure such that the annular sleeve is displaced in a second direction;
- applying a third pressure to the annular space via the flowbore;
- and
- displacing a second piston in the first direction via a force provided by the third pressure applied to the second piston, thereby fluidly coupling the subterranean formation and the flowbore via a plurality of housing apertures defined in the housing and circumferentially disposed about the inner annular casing.
3 more elements
A method for conducting multiple pressure tests of a casing string disposed in a wellbore, comprising:
- applying a first pressure to a first piston via a flowbore defined at least in part by an inner annular casing of a downhole tool, the downhole tool coupled to the casing string such that the downhole tool forms a portion of the casing string, and the downhole tool comprising a housing encircling the inner annular casing such that an annular space is defined therebetween;
- displacing an annular sleeve coupled to or integral with the first piston in a first direction via a force provided by the first pressure applied to the first piston;
- decreasing the first pressure in the flowbore to a second pressure such that the annular sleeve is displaced in a second direction;
- applying additional pressures to the annular space via the flowbore;
- and
- displacing, in the first direction, a second piston disposed in the casing string via a force provided by one pressure of the additional pressures applied to the second piston, thereby fluidly coupling the wellbore and the flowbore via a plurality of apertures defined in the casing string and circumferentially disposed about a longitudinal axis thereof.
3 more elements
Dependencies are inferred from the claim text.