Casing valve
First Claim
Patent Images
1. A downhole completion tool comprising:
- a. a main tool housing defining an internal channel from an external flow area;
b. a valve allowing selective communication between the internal channel and the external flow areas;
c. a valve actuation mechanism allowing opening of the valve without intervention of a tethered activation tool, the actuation mechanism including a hydraulic accumulator on the tool housing, the accumulator (i) including a reservoir of hydraulic fluid, and (ii) being in communication with a pressurized gas source transmitting pressure to the hydraulic fluid; and
d. a propellant-containing cartridge formed on the outside of the tool housing.
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Accused Products
Abstract
A casing valve including a tool housing defining an internal channel from a wellbore annulus. A valve allows selective communication between the internal channel and the wellbore annulus, where the valve has a sliding sleeve positioned externally to the tool housing. A first piston surface for opening the valve and a second piston surface for closing the valve are attached to the sleeve and a fluid supply valve directs fluid to the first and second piston surface. An electronic controller operates the fluid control valve to direct the fluid to the first and second control valve.
32 Citations
22 Claims
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1. A downhole completion tool comprising:
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a. a main tool housing defining an internal channel from an external flow area; b. a valve allowing selective communication between the internal channel and the external flow areas; c. a valve actuation mechanism allowing opening of the valve without intervention of a tethered activation tool, the actuation mechanism including a hydraulic accumulator on the tool housing, the accumulator (i) including a reservoir of hydraulic fluid, and (ii) being in communication with a pressurized gas source transmitting pressure to the hydraulic fluid; and d. a propellant-containing cartridge formed on the outside of the tool housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A downhole completion tool comprising:
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a. a tool housing defining an internal channel from a wellbore annulus; b. a valve allowing selective communication between the internal channel and the wellbore annulus, the valve comprising a sliding sleeve positioned externally to the tool housing; c. a hydraulic accumulator external to the tool housing, the accumulator (i) including a reservoir of hydraulic fluid, and (ii) being in communication with a pressurized gas source transmitting pressure to the hydraulic fluid, thereby providing a stored force for moving the sliding sleeve; d. a valve actuation mechanism selectively releasing the stored force of the accumulator without intervention of a tethered activation tool; and e. a propellant-containing cartridge formed on the outside of the tool housing. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A casing valve comprising:
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a. a tool housing defining an internal channel from a wellbore annulus; b. a sleeve valve allowing selective communication between the internal channel and the wellbore annulus, the sleeve valve comprising a sliding sleeve positioned externally to the tool housing; c. a first piston surface for opening the sleeve valve and a second piston surface for closing the sleeve valve attached to the sleeve; d. a fluid supply valve directing fluid to the first and second piston surface; e. an accumulator providing pressurized fluid to the fluid supply valve; f. an electronic controller operating the fluid supply valve to selectively direct the fluid to the first or second piston surface; and g. a propellant re-charge cartridge containing propellant ignited by the controller and directing gas from the ignited propellant to the accumulator.
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Specification