Pressure activated down hole systems and methods
First Claim
1. A system for activating a down hole tool in a wellbore, the system comprising:
- a piston moveable from a first position to a second position for activating the down hole tool, the piston including a first piston side exposed to a first chamber, and a second piston side exposed to a second chamber, wherein the first and second chambers are defined at least in part by a retainer element arranged about a base pipe; and
a rupture member having a first member side exposed to the first chamber and a second member side exposed to a third chamber defined by a housing arranged about the base pipe, the rupture member being configured to prevent fluid communication between the first chamber and the third chamber only until a pressure differential between the first chamber and the third chamber reaches a predetermined threshold value, at which point the rupture member ruptures and allows fluid communication between the first chamber and the third chamber,wherein when the pressure differential is below the threshold value and the rupture member is intact, the piston is in the first position, and wherein when the pressure differential reaches the threshold value and the rupture member ruptures, the piston moves within the first chamber to the second position and activates the down hole tool.
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Accused Products
Abstract
Systems and methods for activating a down hole tool in a wellbore. A piston is moveable from a first position to a second position for activating the down hole tool. The piston includes a first side exposed to a first chamber, and a second side exposed to a second chamber. A rupture member has a first side exposed to the first chamber and a second side exposed to a third chamber. The rupture member is configured to rupture when a pressure differential between the first chamber and the third chamber reaches a predetermined threshold value, at which point the rupture member allows fluid communication between the first chamber and the third chamber. When the rupture member is intact, the piston is in the first position, and when the rupture member ruptures, the piston moves to the second position and activates the down hole tool.
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Citations
18 Claims
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1. A system for activating a down hole tool in a wellbore, the system comprising:
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a piston moveable from a first position to a second position for activating the down hole tool, the piston including a first piston side exposed to a first chamber, and a second piston side exposed to a second chamber, wherein the first and second chambers are defined at least in part by a retainer element arranged about a base pipe; and a rupture member having a first member side exposed to the first chamber and a second member side exposed to a third chamber defined by a housing arranged about the base pipe, the rupture member being configured to prevent fluid communication between the first chamber and the third chamber only until a pressure differential between the first chamber and the third chamber reaches a predetermined threshold value, at which point the rupture member ruptures and allows fluid communication between the first chamber and the third chamber, wherein when the pressure differential is below the threshold value and the rupture member is intact, the piston is in the first position, and wherein when the pressure differential reaches the threshold value and the rupture member ruptures, the piston moves within the first chamber to the second position and activates the down hole tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for activating a down hole tool in a wellbore, comprising:
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advancing the down hole tool into the wellbore to a location in an annulus, the down hole tool being coupled to a base pipe positioned within the wellbore and the base pipe cooperating with an inner surface of the wellbore to define the annulus therebetween; increasing pressure in the annulus to a pressure above a threshold value, thereby rupturing a rupture member and creating a pressure differential between a first chamber on a first side of a movable piston and a second chamber on a second side of the movable piston, wherein the first and second chambers are defined at least in part by a retainer element arranged about the base pipe; allowing a fluid to flow from the first chamber into a third chamber upon rupturing the rupture member, the third chamber being defined by a housing arranged about the base pipe, and the rupture member isolating the first and third chambers until the threshold value is reached; and moving the piston in response to the pressure differential to activate the down hole tool. - View Dependent Claims (10, 11, 12, 13)
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14. A wellbore system, comprising:
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a base pipe moveable along the wellbore, the base pipe including a sleeve assembly defining a first chamber, a second chamber, and a third chamber; a moveable piston fluidly separating the first chamber and the second chamber; a down hole tool disposed about the base pipe, the down hole tool operatively coupled to the piston and operable in response to movement of the piston; and a rupture member fluidly separating the first chamber from the third chamber only until a pressure differential between the first chamber and the third chamber reaches a predetermined threshold value, at which point the rupture member ruptures and allows fluid communication between the first chamber and the third chamber, thereby reducing pressure in the first chamber and causing the piston to move toward the first chamber to operate the down hole tool. - View Dependent Claims (15, 16, 17, 18)
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Specification