US5373898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston well tool
Assignee: Camco International Inc
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Filing: 1993-10-25
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Granted: 1994-12-20
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Expires: 2013-10-25
Abstract
Abstract A well tool having an elongate circular body with an enclosed fluid bore extending longitudinally therethrough. A fixed plate extends radially between the bore and the body and a rotatable piston extends between the enclosed bore and the body and is rotatable about the enclosed bore. A hydraulic control line extends longitudinally to a position between the plate and the piston for rotating the piston. The tool may be an orientation tool and include a rotatable mandrel actuated by the piston. A recocking spring is provided recocking the piston and valve means are provided in the hydraulic line for admitting and venting fluid from the piston.
Inventors
- 👤 Ronald E. Pringle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:51
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/18; E21B17/00; E21B17/003; E21B17/10; E21B17/1014; E21B17/20; E21B17/206; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4427
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
A rotary powered well tool comprising, an elongate circular body, said body having an inner enclosure extending longitudinally through the body, a fixed plate extending radially between the enclosure and the body, a rotatable piston horizontally aligned with the plate and extending between the enclosure and the body and rotatable about the enclosure, and a hydraulic control line longitudinally extending in the body and extending to a position between the plate and the piston for rotating the piston about the longitudinally extending enclosure.
Claim 2
Dependent Claim
83 words
A rotary powered well tool comprising, an elongate circular body, said body having an inner enclosure extending longitudinally through the body, a fixed plate extending radially between the enclosure and the body, a rotatable piston horizontally aligned with the plate and extending between the enclosure and the body and rotatable about the enclosure, and a hydraulic control line longitudinally extending in the body and extending to a position between the plate and the piston for rotating the piston about the longitudinally extending enclosure.
Claim 3
Dependent Claim
12 words
The well tool of claim 1 including, means for recocking the piston.
Claim 4
Dependent Claim
13 words
The well tool of claim 2 wherein the recocking means includes spring means.
Claim 5
Dependent Claim
22 words
The well tool of claim 1 including, valve means in the hydraulic control line for admitting and venting fluid from the piston.
Claim 6
Dependent Claim
16 words
The well tool of claim 1 including, means for monitoring the rotational position of the piston.
Claim 7
Dependent Claim
112 words
A well orientation tool for rotational orientating a well tool in a well bore comprising, an elongate circular body, said body having an inner enclosure extending longitudinally through the body, a mandrel rotatable in the body and extending out of the body for providing rotation to a well tool, a fixed plate extending radially between the enclosure and the body, a rotatable piston extending between the enclosure and the body and rotatable about the enclosed bore, said piston connected to the mandrel whereby rotational movement of the piston rotates the mandrel, and a hydraulic control line longitudinally extending in the body and extending to a position between the plate and the piston.
Claim 8
Dependent Claim
112 words
A well orientation tool for rotational orientating a well tool in a well bore comprising, an elongate circular body, said body having an inner enclosure extending longitudinally through the body, a mandrel rotatable in the body and extending out of the body for providing rotation to a well tool, a fixed plate extending radially between the enclosure and the body, a rotatable piston extending between the enclosure and the body and rotatable about the enclosed bore, said piston connected to the mandrel whereby rotational movement of the piston rotates the mandrel, and a hydraulic control line longitudinally extending in the body and extending to a position between the plate and the piston.
Claim 9
Dependent Claim
12 words
The orientation tool of claim 6 including, means for recocking the piston.
Claim 10
Dependent Claim
14 words
The orientation tool of claim 7 wherein the recocking means includes a torsional spring.
Claim 11
Dependent Claim
22 words
The orientation tool of claim 6 including, valve means in the hydraulic control line for admitting and venting fluid from the piston.
Claim 12
Dependent Claim
15 words
The orientation tool of claim 6 including, means for monitoring the position of the piston.
Claim 13
Dependent Claim
38 words
The orientation tool of claim 7 including, first ratchet means for allowing recocking of the piston, and second ratchet means connected to the first ratchet means and to the mandrel for holding the rotational position of the mandrel.
References Cited (Backward Citations)
US3405771A
Cited
US4286676A
Cited
US4448254A
Cited
US4862958A
Cited
US5156223A
Cited
US5133404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-19 | 1998-06-20 | 1998-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-19 | 2002-06-20 | 2002-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-19 | 2006-06-20 | 2006-12-20 | $7700.00 | Window Closed / Lapsed |