Ball dropping assembly and technique for use in a well
First Claim
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1. A method usable with a well, comprising:
- running a string comprising a housing, a tool, and a flowable object held in a retained position within the housing of the string downhole in the well;
after the string is run downhole, pressurizing fluid outside the housing to release the flowable object to permit the object to flow in a flow path within the housing of the string until it is seated therein to impede fluid communication; and
actuating the tool in response to the impeded fluid communication.
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Abstract
A technique that is usable with a well includes running string that includes a tool and a flowable object that is held in a retained position within the string downhole in the well. After the string is run downhole in the well, the flowable object is released to permit the object to flow in and subsequently seat in a flow path of the string to impede fluid communication so that the tool may be actuated in response to the impeded fluid communication.
79 Citations
20 Claims
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1. A method usable with a well, comprising:
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running a string comprising a housing, a tool, and a flowable object held in a retained position within the housing of the string downhole in the well; after the string is run downhole, pressurizing fluid outside the housing to release the flowable object to permit the object to flow in a flow path within the housing of the string until it is seated therein to impede fluid communication; and actuating the tool in response to the impeded fluid communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method usable with a well, comprising:
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running a packer downhole in the well on a drill string; using a flow modulator of the drill string to communicate an orientation of the packer to the surface of the well; orienting the packer in response to the communicated orientation; downhole of the flow modulator, introducing a flowable device by pressurizing fluid outside a housing into a central passageway of the string to impede fluid communication through the string such that fluid inside the central passageway becomes pressurized; and setting the packer in response to the pressurization from the impeded fluid communication. - View Dependent Claims (12, 13, 14)
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15. A system usable with a well, comprising:
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a flowable object; a string comprising a housing defining a flow path therein, and a tool adapted to be actuated by the flowable object; and a retaining device located in the housing of the string and comprising a piston, wherein an outer surface of the piston is in contact with fluid outside the housing, the retaining device adapted to retain the flowable object during a run in hole state of the string, wherein the retaining device is actuated by fluid pressure acting on the outer surface of the piston to release the flowable object into the flow path, thereby impeding fluid flow in the flow path and pressurizing the fluid therein, to actuate the tool. - View Dependent Claims (16, 17, 18)
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19. A system usable with a well, comprising:
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a drill string comprising a flow modulator, a packer setting tools and a packer; and a retaining device located in the string downhole of the flow modulator, the retaining device that selectively retains a flowable object outside of a central passageway of the string and release the flowable object into the central passageway based on a pressure in an annular region outside of the retaining device exceeding a pressure threshold, wherein the flowable object, after being released into the central passageway, lodges in a seat in the central passageway to block fluid flow and build fluid pressure therein, and wherein the packer setting tool is actuated by the fluid pressure to set the packer.
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20. A system usable with a well, comprising:
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a drill string comprising a flow modulator, a packer setting tool and a packer; a circulation valve adapted to be open and closed; and a retaining device located in the string downhole of the flow modulator, the retaining device adapted to selectively retain a flowable object and release the flowable object into a central passageway of the string in response to the circulation valve closing, wherein the flowable object, after being released into the central passageway, lodges in a seat in the central passageway to block fluid flow and build fluid pressure therein, wherein the packer setting tool is actuated by the fluid pressure to set the packer.
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Specification