US3561528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for simultaneously guiding at least two insertable mechanisms in a well tubing
Assignee: Individual
•
Filing: 1969-10-31
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Granted: 1971-02-09
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Expires: 1989-10-31
Abstract
Abstract An apparatus for installing and removing insertable elements, such as flow valves and the like, laterally of a well axis. The well has a plurality of laterally offset receiving stations. An elongated guide tool rotatably supports a top shifting tool and a bottom shifting tool. When the guide tool is lowered into the well, the top shifting tool is normally adapted to remove an element from a predetermined receiving station. The removed element upon becoming aligned with the axis of the well, releases the bottom shifting tool for lateral movement. The bottom shifting tool can then either install or remove another insertable element. Accordingly, in one apparatus aspect at least one insertable element can be removed and another element installed during a single run by the elongated tool through the well tubing; in another apparatus aspect at least two such elements can be removed during a single run.
Inventors
- 👤 Huston V Butler
- 👤 Tilghman M Feeler
- 👤 Bernard F Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/03
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
143 words
A multifunction apparatus for installing and removing offset mechanisms in and from a well tubing having a least one offset station, the apparatus including: an elongated guide tool having an upper section and a lower section; a top shifting tool rotatably and releasably connected to said upper section; a bottom shifting tool rotatably and releasably connected to said lower section; means releasing said top shifting tool for lateral movement toward a mechanism seated in a particular receiving station and for pulling said mechanism from its seat into said guide tool when said apparatus is raised in said tubing; means releasing said bottom shifting tool for lateral movement toward said particular receiving station or to any receiving station positioned above said particular receiving station; and said bottom shifting tool releasing means being actuable by said pulled mechanism upon becoming seated in said guide tool.
Claim 2
Dependent Claim
143 words
A multifunction apparatus for installing and removing offset mechanisms in and from a well tubing having a least one offset station, the apparatus including: an elongated guide tool having an upper section and a lower section; a top shifting tool rotatably and releasably connected to said upper section; a bottom shifting tool rotatably and releasably connected to said lower section; means releasing said top shifting tool for lateral movement toward a mechanism seated in a particular receiving station and for pulling said mechanism from its seat into said guide tool when said apparatus is raised in said tubing; means releasing said bottom shifting tool for lateral movement toward said particular receiving station or to any receiving station positioned above said particular receiving station; and said bottom shifting tool releasing means being actuable by said pulled mechanism upon becoming seated in said guide tool.
Claim 3
Dependent Claim
75 words
The apparatus of claim 1 wherein: said offset mechanisms are flow control valves; said top shifting tool releasing means include first releasable connecting means normally maintaining said top shifting tool in alignment with said guide tool as the apparatus is lowered in said tubing; and said bottom shifting tool releasing means include second releasable connecting means maintaining said bottom shifting tool in alignment with said guide tool as the apparatus is lowered in said tubing.
Claim 4
Dependent Claim
46 words
The apparatus of claim 2 wherein: said first shifting tool coacts with a spring-loaded member; and said member exerting a lateral force between the inner wall of said guide tool and said shifting tool to cause said lateral movement when said first connecting means are disconnected.
Claim 5
Dependent Claim
16 words
The apparatus of claim 3 wherein said member is a piston slidably mounted in a cylinder.
Claim 6
Dependent Claim
32 words
The apparatus of claim 4 wherein, said first connecting means include a member which is slidably mounted in an axial direction and which normally engages the head of said top shifting tool.
Claim 7
Dependent Claim
20 words
The apparatus of claim 5 wherein said member is selectively releasably secured in said guide tool by a shear pin.
Claim 8
Dependent Claim
29 words
The apparatus of claim 6 wherein: said head is mounted on a pivot; and said top shifting tool rotates about the pivot axis upon the shearing of said pin.
Claim 9
Dependent Claim
20 words
The apparatus of claim 2 wherein said second connecting means include a spring-loaded latch actuable by said pulled flow valve.
Claim 10
Dependent Claim
38 words
The apparatus of claim 8 wherein said second connecting means further include a force-producing mechanism connected between said latch and said bottom shifting tool to cause the rotation of said bottom shifting tool when said latch is actuated.
Claim 11
Dependent Claim
81 words
The apparatus of claim 9 wherein said force-producing mechanism includes: a rod; a spring-loaded piston; a knuckle joint; a linkage means; one end of said rod being connected to said latch and the other end of said rod being connected to said piston; said linkage means being connected between said piston and said knuckle joint; said knuckle joint being connected to said bottom shifting tool; and said knuckle joint being actuated by said linkage upoN the movement of said spring-loaded piston.
Claim 12
Dependent Claim
102 words
The apparatus of claim 10 wherein: said spring-loaded piston is slidably mounted in a cylinder formed in said lower section; an end wall in said cylinder; the free end of said rod extending through said end wall; a helical spring between said piston and said end wall; an annular clamping member slidably mounted on said rod and positioned between said spring and said end wall to clamp said latch; and said latch being pivotally mounted in a slot formed in the free end of said rod and being slidable through said annular member when said latch is actuated by said pulled valve.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |