Downhole assembly with debris relief, and method for using same
First Claim
Patent Images
1. An assembly for treating an interval of a wellbore, comprising:
- a fluid jet perforation device, deployed on a tubing string;
a resettable sealing device deployed on the tubing string in fluid communication with the fluid jet perforation device;
the sealing device including a J-profile with a pin slidably-disposed in said J-profile for use in actuation of the sealing devicewherein the J-profile comprises one or more debris discharge ports through the J-profile.
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Abstract
A tool assembly and method for completing a well are provided. The tool includes debris relief features that enable use in solids-laden environments, for example in the presence of sand. Forward and reverse circulation pathways to the isolated interval are present to allow clearing of debris from the wellbore annulus while the sealing device remains set against the wellbore.
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Citations
20 Claims
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1. An assembly for treating an interval of a wellbore, comprising:
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a fluid jet perforation device, deployed on a tubing string; a resettable sealing device deployed on the tubing string in fluid communication with the fluid jet perforation device; the sealing device including a J-profile with a pin slidably-disposed in said J-profile for use in actuation of the sealing device wherein the J-profile comprises one or more debris discharge ports through the J-profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. The assembly of 1 wherein the fluid jet perforation device is assembled above the resettable sealing device.
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11. A method for abrasive perforation and treatment of a formation intersected by a cased wellbore, the method comprising the steps of:
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providing a tool assembly comprising a fluid jet perforation device, and a sealing device comprising a J-profile with a pin for use in actuation of the sealing device; deploying the tool assembly on a tubing string within the cased wellbore; setting the sealing device against the cased wellbore; while the sealing device is set against the cased wellbore delivering abrasive fluid to the tubing string; jetting abrasive fluid from the fluid jet perforation device to perforate the cased wellbore for forming one or more perforations; while the sealing device remains set against the cased wellbore, circulating treatment fluid down an annulus formed by the cased wellbore to treat the one or more perforations; then delivering the treatment fluid down the annulus; circulating the treatment fluid from the annulus; and unsetting the sealing device from the cased wellbore. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An assembly deployed on a tubing string, for treating an interval of a wellbore, comprising:
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a fluid jet perforation device; a resettable sealing device; the sealing device including a J-profile with a pin slidably-disposed in said J-profile for use in actuation of the sealing device wherein the pin is held to the assembly by a clutch ring, and wherein the clutch ring comprises a debris relief passageway to permit discharge of the debris from about the pin while the pin slides within the J-profile.
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Specification