Coiled tubing inflatable packer with circulating port
First Claim
1. A packer apparatus for use on coiled tubing in a well bore, said apparatus comprising:
- a housing having a central housing opening and defining a circulating passage therethrough;
a packer element mounted on said housing;
a valve sleeve slidably disposed in said housing, said valve sleeve defining a valve port therethrough in communication with said circulating passage when said valve sleeve is in an open position, thereby allowing circulation, and isolated from said circulating passage when in a closed position, thereby preventing circulation, said valve sleeve defining a differential area thereon such that a predetermined fluid flow through the apparatus results in sufficient pressure acting across said differential area to move said valve sleeve to said closed position without requiring rotation of the tubing, wherein said valve sleeve is adapted for allowing circulation of fluid after said packer element is engaged with said well bore; and
a mandrel disposed in said central opening and defining a circulating port therein, said circulating port and circulating passage being in communication when said mandrel is in a circulating position with respect to said housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A packer apparatus with a circulating port. A housing of the packer has inflation passages, circulating passages, treating fluid passages, and equalizing passages defined therein. In a straddle packer embodiment, upper and lower packers are mounted on the housing on opposite sides of an outlet of the treating fluid passage. A circulation valve with a sliding differential pressure actuated valve sleeve is disposed below the packers. An inner mandrel is slidably received in the central opening of the housing. The mandrel has a mandrel bore and has upper inflation and circulating ports, lower inflation ports, upper and lower equalizing ports, a treating port and lower circulating ports, all of which communicate with the mandrel bore. The valve sleeve has a valve port. A lug and endless J-slot is operably associated with the housing and mandrel for controlling a telescoping position of the mandrel relative to the housing in response to reciprocation without rotation of the mandrel relative to the housing. The mandrel may also be used to lock the valve sleeve in a closed position. The lug and J-slot define a repeatable sequence of inflating (or deflating) position, intermediate position, circulating position, treating position, equalizing position, and ready position wherein the tool is ready to return to the original inflating position on the next telescoping stroke of the mandrel within the housing.
68 Citations
25 Claims
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1. A packer apparatus for use on coiled tubing in a well bore, said apparatus comprising:
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a housing having a central housing opening and defining a circulating passage therethrough; a packer element mounted on said housing; a valve sleeve slidably disposed in said housing, said valve sleeve defining a valve port therethrough in communication with said circulating passage when said valve sleeve is in an open position, thereby allowing circulation, and isolated from said circulating passage when in a closed position, thereby preventing circulation, said valve sleeve defining a differential area thereon such that a predetermined fluid flow through the apparatus results in sufficient pressure acting across said differential area to move said valve sleeve to said closed position without requiring rotation of the tubing, wherein said valve sleeve is adapted for allowing circulation of fluid after said packer element is engaged with said well bore; and a mandrel disposed in said central opening and defining a circulating port therein, said circulating port and circulating passage being in communication when said mandrel is in a circulating position with respect to said housing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A packer apparatus comprising:
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a housing having a central housing opening, and having packer inflation passage means defined in said housing, and having a treating fluid passage defined in said housing with an outlet of said treating fluid passage communicating with an exterior of said housing; a packer mounted on said housing adjacent to said outlet of said treating fluid passage, said packer being in communication with said packer inflation passage means; an inner mandrel slidably received in said central housing opening, said mandrel having a mandrel bore and having an inflation port means and a treating port means, each communicated with said mandrel bore; circulating means for circulating fluid from said central housing opening through said housing into a well annulus, said circulating means being open as the apparatus is run into a well bore; and lug and J-slot means, operably associated with said housing and said inner mandrel, for controlling a telescoping position of said mandrel relative to said housing in response to telescoping reciprocation without rotation of said mandrel relative to said housing, said mandrel being movable between an inflating position wherein said inflation port means of said mandrel is communicated with said inflation passage means of said housing and said treating port means of said mandrel is isolated from said treating passage means of said housing, a circulating position in which said circulating means is open, and a treating position wherein said inflation port means of said mandrel is isolated from said inflation passage means of said housing and said treating port means of said mandrel is communicated with said treating fluid passage of said housing. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A packer apparatus for use on coiled tubing in a well bore, said apparatus comprising:
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a housing having a central housing opening and defining a circulating passage therethrough; a valve sleeve slidably disposed in said housing, said valve sleeve defining a valve port therethrough in communication with said circulating passage when said valve sleeve is in an open position, thereby allowing circulation, and isolated from said valve port when in a closed position, thereby preventing circulation; a mandrel telescopingly disposed in said central housing opening, said mandrel having means for holding said valve sleeve in said closed position; a packer element mounted on said housing; and resettable circulating means for allowing circulation of fluid from said central housing opening through said housing into a well annulus without rotation of the tubing. - View Dependent Claims (15)
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16. A packer apparatus comprising:
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a housing having a central housing opening, and having packer inflation passage means defined in said housing, and having a treating fluid passage defined in said housing with an outlet of said treating fluid passage communicating with an exterior of said housing; a packer mounted on said housing adjacent to said outlet of said treating fluid passage, said packer being in communication with said packer inflation passage means; an inner mandrel slidably received in said central housing opening, said mandrel having a mandrel bore and having an inflation port means and a treating port means, each communicated with said mandrel bore; circulating means for circulating fluid from said central housing opening through said housing into a well annulus; and lug and J-slot means, operably associated with said housing and said inner mandrel, for controlling a telescoping position of said mandrel relative to said housing in response to telescoping reciprocation without rotation of said mandrel relative to said housing, said mandrel being movable between an inflating position wherein said inflation port means of said mandrel is communicated with said inflation passage means of said housing and said treating port means of said mandrel is isolated from said treating passage means of said housing, a circulating position in which said circulating means is open, and a treating position wherein said inflation port means of said mandrel is isolated from said inflation passage means of said housing and said treating port means of said mandrel is communicated with said treating fluid passage of said housing; wherein; said housing has an equalizing passage means defined therein communicated with the exterior of said housing above said packer and communicated with the exterior of said housing below said packer; said packer has an equalizing port means defined therein communicated with said mandrel bore; and said lug and J-slot means further defines an equalizing position of said mandrel wherein said equalizing port means of said mandrel communicates with said equalizing passage means of said housing with said mandrel bore while said treating fluid passage is also communicated with said mandrel bore through said treating port means. - View Dependent Claims (17, 18, 19)
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20. A packer apparatus comprising:
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a housing having a central housing opening, and having packer inflation passage means defined in said housing, and having a treating fluid passage defined in said housing with an outlet of said treating fluid passage communicating with an exterior of said housing; a packer mounted on said housing adjacent to said outlet of said treating fluid passage, said packer being in communication with said packer inflation passage means; an inner mandrel slidably received in said central housing opening, said mandrel having a mandrel bore and having an inflation port means and a treating port means, each communicated with said mandrel bore; circulating means for circulating fluid from said central housing opening through said housing into a well annulus, said circulating means being characterized by a circulation valve comprising; a portion of said inner mandrel defining a circulating port therethrough; a portion of said housing defining a circulating passage therethrough; and a valve sleeve slidably disposed between said housing and said mandrel and having a valve port defined therethrough, said valve port being in communication with said circulating passage when in an open position and isolated from said circulating passage when in a closed position; and lug and J-slot means, operably associated with said housing and said inner mandrel, for controlling a telescoping position of said mandrel relative to said housing in response to telescoping reciprocation without rotation of said mandrel relative to said housing, said mandrel being movable between an inflating position wherein said inflation port means of said mandrel is communicated with said inflation passage means of said housing and said treating port means of said mandrel is isolated from said treating passage means of said housing, a circulating position in which said circulating means is open, and a treating position wherein said inflation port means of said mandrel is isolated from said inflation passage means of said housing and said treating port means of said mandrel is communicated with said treating fluid passage of said housing. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification