US4373583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test-system
Assignee: Halliburton Co
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Filing: 1982-01-05
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Granted: 1983-02-15
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Expires: 2002-01-05
Abstract
Abstract A test system for wells which may be utilized in any well having a landing nipple therein. A pressure recording instrument is run in on a locking mandrel and a closing tool is provided which cooperates with a valve and moves it from open to closed position. With the closing prong engaged with the valve member and the valve in open position a small diameter extension on the prong is positioned opposite the ports in the valve to provide a large flow area.
Inventors
- 👤 Fleming A. Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/14; E21B47/00; E21B47/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A test system for wells comprising, a landing nipple having locking grooves therein, a lock mandrel releasably locked in said landing nipple, a pressure relief valve carried by the lock mandrel, a valve suspended from the lock mandrel, said valve including a valve body having lateral ports at its upper end and a valve member movable between open and closed positions, a closing tool for engaging said valve member and moving it from open to closed position, means for releasing said closing tool from said valve member with said valve member in closed position, said closing tool having a small diameter extension at its upper end, said closing tool and the valve member dimensioned such that said closing tool extension is opposite said ports when said tool and valve member are engaged and said valve member is in its open position, and a pressure recording instrument suspended from the valve.
Claim 2
Dependent Claim
150 words
A test system for wells comprising, a landing nipple having locking grooves therein, a lock mandrel releasably locked in said landing nipple, a pressure relief valve carried by the lock mandrel, a valve suspended from the lock mandrel, said valve including a valve body having lateral ports at its upper end and a valve member movable between open and closed positions, a closing tool for engaging said valve member and moving it from open to closed position, means for releasing said closing tool from said valve member with said valve member in closed position, said closing tool having a small diameter extension at its upper end, said closing tool and the valve member dimensioned such that said closing tool extension is opposite said ports when said tool and valve member are engaged and said valve member is in its open position, and a pressure recording instrument suspended from the valve.
Claim 3
Dependent Claim
157 words
A test system for wells comprising, a landing nipple having grooves therein, a lock mandrel releasably locked in said landing nipple, a pressure relief valve carried by the lock mandrel, a slide valve suspended from the lock mandrel, said slide valve including a valve body having lateral ports at its upper end and a slide valve member movable downwardly a substantial distance below said ports, a closing tool for engaging said slide valve member and moving it upwardly from open to closed position, means for releasing said closing tool from said valve member with said slide valve member in closed position, said closing tool having a small diameter extension at its upper end, said closing tool and slide valve dimensioned such that said closing tool extension is opposite said ports when said tool and valve member are engaged and said valve member is in its lower position, and a pressure recording instrument suspended from the slide valve.
Claim 4
Dependent Claim
157 words
A test system for wells comprising, a landing nipple having grooves therein, a lock mandrel releasably locked in said landing nipple, a pressure relief valve carried by the lock mandrel, a slide valve suspended from the lock mandrel, said slide valve including a valve body having lateral ports at its upper end and a slide valve member movable downwardly a substantial distance below said ports, a closing tool for engaging said slide valve member and moving it upwardly from open to closed position, means for releasing said closing tool from said valve member with said slide valve member in closed position, said closing tool having a small diameter extension at its upper end, said closing tool and slide valve dimensioned such that said closing tool extension is opposite said ports when said tool and valve member are engaged and said valve member is in its lower position, and a pressure recording instrument suspended from the slide valve.
Claim 5
Dependent Claim
52 words
The test system of claim 2 wherein the slide valve member carries upper and lower seals straddling said ports with the upper seal having a larger pressure responsive surface than the lower seal which after the valve has been closed urges the valve member toward closed position in response to well pressure.
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) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |