Control of well tools utilizing downhole pumps
First Claim
1. A system for selectively actuating from a remote location multiple downhole well tools in a well, the system comprising:
- multiple electrical conductors in the well, each well tool being connected to a different set of two electrical conductors extending to the remote location; and
multiple control devices that control a direction of actuation of each well tool in response to a voltage potential applied across each respective set of conductors, each of the control devices including at least one downhole pump which applies a pressure differential to an actuator of a respective one of the well tools.
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Accused Products
Abstract
A method of selectively actuating from a remote location multiple downhole well tools includes: selecting one of the well tools for actuation by applying a voltage polarity to a set of conductors in the well, thereby operating a downhole pump connected to the well tool and displacing a piston of the well tool in one direction; and selecting the well tool for actuation by applying an opposite voltage polarity to the set of conductors, thereby operating the downhole pump and displacing the piston in an opposite direction. A system includes multiple electrical conductors in the well; and multiple control devices that control which of the well tools is selected for actuation in response to current flow in a set of the conductors, each of the control devices including at least one downhole pump which applies a pressure differential to an actuator of a respective one of the well tools.
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Citations
19 Claims
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1. A system for selectively actuating from a remote location multiple downhole well tools in a well, the system comprising:
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multiple electrical conductors in the well, each well tool being connected to a different set of two electrical conductors extending to the remote location; and multiple control devices that control a direction of actuation of each well tool in response to a voltage potential applied across each respective set of conductors, each of the control devices including at least one downhole pump which applies a pressure differential to an actuator of a respective one of the well tools. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for selectively actuating a downhole well tool from a remote location, the system comprising:
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three electrical conductors extending between the well tool and the remote location; and first and second shuttle valves, the first shuttle valve being connected to the first and second conductors and the second shuttle valve being connected to the second and third conductors, wherein the well tool is actuated in a first direction when voltage potential is applied across the first and second conductors, and wherein the well tool is actuated in a second direction opposite to the first direction when voltage potential is applied across the second and third conductors.
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8. A method of selectively actuating from a remote location multiple downhole well tools in a well, the method comprising the steps of:
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selecting a first one of the well tools for actuation by applying voltage potential across a first set of conductors in the well, thereby operating a first downhole pump connected to the first well tool; and selecting a second one of the well tools for actuation by applying voltage potential across a second set of conductors in the well, thereby operating a second downhole pump connected to the second well tool, wherein the first set of conductors and the second set of conductors share a conductor. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of selectively actuating from a remote location multiple downhole well tools in a well, the method comprising the steps of:
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selecting a first one of the well tools for actuation by applying a first voltage polarity to a first set of conductors in the well, thereby operating a first downhole pump connected to the first well tool and displacing a piston of the first well tool in a first direction; and selecting the first well tool for actuation by applying a second voltage polarity opposite to the first voltage polarity to the first set of conductors, thereby operating the first downhole pump and displacing the piston of the first well tool in a second direction opposite to the first direction. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification