Downhole tool assembly with debris relief, and method for using same
DCFirst Claim
Patent Images
1. An assembly for treating an interval of a wellbore, composing:
- 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 to permit discharge of the debris upon slidable movement of the pin within 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.
213 Citations
22 Claims
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1. An assembly for treating an interval of a wellbore, composing:
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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 to permit discharge of the debris upon slidable movement of the pin within the J-profile. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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;
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; circulating the treatment fluid from the annulus; delivering abrasive fluid to the tubing string while delivering the treatment fluid down the annulus; and
,unsetting the sealing device from the cased wellbore. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. 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 pin is held to the assembly by a clutch ring, and wherein the clutch ring comprises an aperture to permit discharge of the debris from about the pin while the pin slides within the J-profile.
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16. An assembly for eating 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 an equalization valve for actuating slidable movement of the sliding pin within the resettable sealing device wherein the equalization valve comprises; an equalization valve plug slidably disposed within an equalization valve housing continuous with the resettable sealing device for actuating slidable movement of the pin within the J-profile. - View Dependent Claims (17)
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18. 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;
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; circulating the treatment fluid from the annulus; monitoring pressure of the abrasive fluid within the tubing string; monitoring a rate and pressure of the treatment fluid delivered down the annulus; estimating a fracture extension pressure during treatment of the cased wellbore; and unsetting the sealing device from the cased wellbore.
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19. 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;
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; circulating the treatment fluid from the annulus; reverse circulating the treatment fluid from the annulus to surface through the tubing string; and unsetting the sealing device from the cased wellbore. - View Dependent Claims (20, 21)
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22. 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;
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; circulating the treatment fluid from the annulus; opening an equalization passage extending through the sealing device to permit fluid communication of a first portion of the annulus beneath the sealing device to a second portion of the annulus above the sealing device; and
,unsetting the sealing device from the cased wellbore.
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Specification