US3698477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Running-in tool for wells
Assignee: Cook Testing Co
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Filing: 1971-04-06
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Granted: 1972-10-17
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Expires: 1991-04-06
Abstract
Abstract A running-in tool for placing a flow control device in a section of a pipe installed in a well comprises a carrier connected by shear pins to the flow control device and adapted to be lowered into the well pipe, together with a collet encircling a portion of the carrier and connected thereto by additional shear pins. The collet is provided with a series of axially extending spring fingers each having a portion adapted to engage an internal shoulder provided in the well pipe. The flow control device also has axially extending spring fingers for engagement with an internal recess in the well pipe. The collet has an inverted tapered bowl proportioned to receive the upper end of most of the spring fingers of the flow control device to hold them in a retracted inoperative position, the remaining spring fingers being shorter and held in the inoperative position by posts on the collet extending below the bowl.
Inventors
- 👤 Gary A Radig
- 👤 Oliva A Rowell Jr
- 👤 Harvey R Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
247 words
In a running-in tool for placing a flow control device in a section of a pipe installed in a well, the pipe section having an upward facing internal shoulder and an axially spaced internal recess, the improvement comprising, in combination: a collet having a plurality of axially extending spring fingers, each of the spring fingers having a portion thereof adapted to engage and rest on the shoulder, a carrier extending through the interior of the collet, an abutment on the carrier underlying a portion of the collet, second releasable means connecting the carrier to the collet, second releasable means connecting the carrier to the flow control device, expansible support means on the flow control device for engagement with the recess in the pipe section, means on the collet for maintaining the expansible support means in retracted inoperative position while lowering the carrier, collet and flow control device into position in the well pipe, whereby downward movement of the collet is arrested by engagement of the spring finger portions with the shoulder so that continued downward movement of the carrier releases said first releasable means, and disengages the expansible support means from said collet, subsequent upward movement of the carrier serving to lift the flow control device to permit said expansible support means to engage within the recess in the pipe section, and continued upward movement of the carrier serving to release said second releasable means and permit upward withdrawal of the running-in tool from the well pipe.
Claim 2
Dependent Claim
247 words
In a running-in tool for placing a flow control device in a section of a pipe installed in a well, the pipe section having an upward facing internal shoulder and an axially spaced internal recess, the improvement comprising, in combination: a collet having a plurality of axially extending spring fingers, each of the spring fingers having a portion thereof adapted to engage and rest on the shoulder, a carrier extending through the interior of the collet, an abutment on the carrier underlying a portion of the collet, second releasable means connecting the carrier to the collet, second releasable means connecting the carrier to the flow control device, expansible support means on the flow control device for engagement with the recess in the pipe section, means on the collet for maintaining the expansible support means in retracted inoperative position while lowering the carrier, collet and flow control device into position in the well pipe, whereby downward movement of the collet is arrested by engagement of the spring finger portions with the shoulder so that continued downward movement of the carrier releases said first releasable means, and disengages the expansible support means from said collet, subsequent upward movement of the carrier serving to lift the flow control device to permit said expansible support means to engage within the recess in the pipe section, and continued upward movement of the carrier serving to release said second releasable means and permit upward withdrawal of the running-in tool from the well pipe.
Claim 3
Dependent Claim
34 words
The combination set forth in claim 1 in which the said first releasable means comprises a plurality of radially extending shear pins each fixed on the collet and spring-loaded radially outwardly on said carrier.
Claim 4
Dependent Claim
248 words
In a running-in tool for placing a flow control device in a section of a pipe installed in a well, the pipe section having an upward facing internal shoulder and an axially spaced internal recess, the improvement comprising, in combination: a collet having a plurality of upward extending spring fingers, each of the spring fingers having a lug adapted to engage and rest on the shoulder in the pipe section, a carrier extending through the interior of the collet, an abutment on the carrier underlying a portion of the collet, first frangible means connecting the carrier to the collet, second frangible means connecting the carrier to the flow control device, expansible support means on the flow control device for engagement with the recess in the pipe section, means on the collet for maintaining the expansible support means in retracted inoperative position while lowering the carrier, collet and flow control device into position in the well pipe, whereby downward movement of the collet is arrested by engagement of the lugs with the shoulder so that continued downward movement of the carrier breaks said first frangible means and releases the expansible support means from said collet, subsequent upward movement of the carrier serving to lift the flow control device to permit said expansible support means to engage within the recess in the pipe section, and continued upward movement of the carrier serving to break said second frangible means and permit withdrawal of the running-in tool upward from the well pipe.
Claim 5
Dependent Claim
248 words
In a running-in tool for placing a flow control device in a section of a pipe installed in a well, the pipe section having an upward facing internal shoulder and an axially spaced internal recess, the improvement comprising, in combination: a collet having a plurality of upward extending spring fingers, each of the spring fingers having a lug adapted to engage and rest on the shoulder in the pipe section, a carrier extending through the interior of the collet, an abutment on the carrier underlying a portion of the collet, first frangible means connecting the carrier to the collet, second frangible means connecting the carrier to the flow control device, expansible support means on the flow control device for engagement with the recess in the pipe section, means on the collet for maintaining the expansible support means in retracted inoperative position while lowering the carrier, collet and flow control device into position in the well pipe, whereby downward movement of the collet is arrested by engagement of the lugs with the shoulder so that continued downward movement of the carrier breaks said first frangible means and releases the expansible support means from said collet, subsequent upward movement of the carrier serving to lift the flow control device to permit said expansible support means to engage within the recess in the pipe section, and continued upward movement of the carrier serving to break said second frangible means and permit withdrawal of the running-in tool upward from the well pipe.
Claim 6
Dependent Claim
92 words
The combination set forth in claim 3 in which the expansible support means includes a circular series of spring fingers each having a lug portion engageable within the recess, certain of said spring fingers in said series extending axially beyond their respective lug portions, the collet having an inverted tapered bowl for confining the extending portions of said spring fingers in said retracted inoperative position, and downward projecting elements on said collet extending below said inverted bowl for contacting and maintaining certain others of said spring fingers in said retrActed inoperative position.
Claim 7
Dependent Claim
237 words
In a running-in tool for placing a flow control device in a section of a pipe installed in a well, the pipe section having an upward facing internal shoulder, the improvement comprising, in combination: a collet having a plurality of upward extending spring fingers, each of the spring fingers having a lug adapted to engage and rest on the shoulder in the pipe section, a carrier extending through the interior of the collet, an abutment on the carrier underlying a portion of the collet, first frangible means connecting the carrier to the collet, second frangible means connecting the carrier to the flow control device, expansible support means on the flow control device for engagement within the well pipe, means on the collet for maintaining the expansible support means in retracted inoperative position while lowering the carrier, collet and flow control device into position in the well pipe, downward movement of the collet being arrested by engagement of the lugs with the shoulder, and continued downward movement of the carrier serving to break said first frangible means and to release the expansible support means from said collet, subsequent upward movement of the carrier serving to lift the flow control device to permit its expansible support means to engage within the well pipe, and continued upward movement of the carrier serving to break said second frangible means and permit withdrawal of the running-in tool upward from the well pipe.
Claim 8
Dependent Claim
237 words
In a running-in tool for placing a flow control device in a section of a pipe installed in a well, the pipe section having an upward facing internal shoulder, the improvement comprising, in combination: a collet having a plurality of upward extending spring fingers, each of the spring fingers having a lug adapted to engage and rest on the shoulder in the pipe section, a carrier extending through the interior of the collet, an abutment on the carrier underlying a portion of the collet, first frangible means connecting the carrier to the collet, second frangible means connecting the carrier to the flow control device, expansible support means on the flow control device for engagement within the well pipe, means on the collet for maintaining the expansible support means in retracted inoperative position while lowering the carrier, collet and flow control device into position in the well pipe, downward movement of the collet being arrested by engagement of the lugs with the shoulder, and continued downward movement of the carrier serving to break said first frangible means and to release the expansible support means from said collet, subsequent upward movement of the carrier serving to lift the flow control device to permit its expansible support means to engage within the well pipe, and continued upward movement of the carrier serving to break said second frangible means and permit withdrawal of the running-in tool upward from the well pipe.
Claim 9
Dependent Claim
126 words
In a running-in tool for placing a flow control device in a section of pipe installed in a well, the pipe having an upward facing internal shoulder, the subcombination of: a carrier adapted to be lowered into the well pipe, means whereby the carrier may be releasably secured to a flow control device, a collet encircling a portion of the carrier and having a series of axially extending spring fingers each having a portion adapted to engage the internal shoulder, means for releasably connecting said carrier to said collet, said collet having an inverted tapered bowl below said spring fingers, said bowl being proportioned to receive upper ends of similar spring fingers carried upon the flow control device to hole them in a retracted inoperative position.
Claim 10
Dependent Claim
126 words
In a running-in tool for placing a flow control device in a section of pipe installed in a well, the pipe having an upward facing internal shoulder, the subcombination of: a carrier adapted to be lowered into the well pipe, means whereby the carrier may be releasably secured to a flow control device, a collet encircling a portion of the carrier and having a series of axially extending spring fingers each having a portion adapted to engage the internal shoulder, means for releasably connecting said carrier to said collet, said collet having an inverted tapered bowl below said spring fingers, said bowl being proportioned to receive upper ends of similar spring fingers carried upon the flow control device to hole them in a retracted inoperative position.
Claim 11
Dependent Claim
17 words
The subcombination set forth in claim 6 in which frangible means connect the carrier to the collet.
Claim 12
Dependent Claim
22 words
The subcombination set forth in claim 6 in which frangible means are provided for connecting the carrier to the flow control device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |