US5226491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid operated blanking block valve
Assignee: Camco International Inc
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Filing: 1992-09-29
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Granted: 1993-07-13
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Expires: 2012-09-29
Abstract
Abstract A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.
Inventors
- 👤 Ronald E. Pringle
- 👤 Arthur J. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:51
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B17/00; E21B17/02; E21B17/04; E21B17/06; E21B33/124; E21B33/1243; E21B34/00; E21B34/06; E21B34/066; E21B2200/00; E21B2200/05; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; E21B43/1235
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
131 words
A solenoid operated blanking block valve for use in a well comprising, a housing having a bore therethrough, an upwardly facing valve seat in the bore, a flapper valve closure element positioned above the valve seat moving between an open position to a closed position seated on the valve seat for blocking off downward flow through the bore, a flow tube telescopically movable in the housing, and movable upwardly through the valve seat for opening the valve, and movable downwardly for allowing the flapper to close, biasing means in the housing for biasing the flow tube upwardly for opening the valve, an armature secured to the flow tube, and a solenoid coil in the housing for attracting the armature and moving the flow tube downwardly for allowing the valve to close.
Claim 2
Dependent Claim
131 words
A solenoid operated blanking block valve for use in a well comprising, a housing having a bore therethrough, an upwardly facing valve seat in the bore, a flapper valve closure element positioned above the valve seat moving between an open position to a closed position seated on the valve seat for blocking off downward flow through the bore, a flow tube telescopically movable in the housing, and movable upwardly through the valve seat for opening the valve, and movable downwardly for allowing the flapper to close, biasing means in the housing for biasing the flow tube upwardly for opening the valve, an armature secured to the flow tube, and a solenoid coil in the housing for attracting the armature and moving the flow tube downwardly for allowing the valve to close.
Claim 3
Dependent Claim
28 words
The blanking block valve of claim 1 including, a transducer connected to the valve and electrically connected to the well surface for determining the position of the valve.
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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) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |