Patent US3815055A successfully refreshed from Google Patents.
Patent US3358771A successfully refreshed from Google Patents.
US3358771A
Expired / Lapsed
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Multiple-opening bypass valve
Assignee: Schlumberger Well Surveying Corp
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Filing: 1966-01-19
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Granted: 1967-12-19
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 William O Berryman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:18
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A TUBULAR CONTROL VALVE ADAPTED FOR CONNECTION TO A TUBULAR STRING FOR OPERATION IN A WELL BORE COMPRISING: INNER AND OUTER TUBULAR MEMBERS EACH HAVING A LATERAL PORT AND TELESCOPICALLY ARRANGED TOGETHER FOR RELATIVE MOVEMENT BETWEEN SPACED POSITIONS; A SLEEVE MEMBER SLIDABLY DISPOSED BETWEEN SAID TUBULAR MEMBERS; SEALING MEANS ON SAID SLEEVE MEMBER AND FLUIDLY SEALED TO SAID TUBULAR MEMBERS; MEANS RETAINING SAID SLEEVE MEMBER AND SEALING MEANS BETWEEN SAID PORTS WHENEVER SAID TUBULAR MEMBERS ARE IN ONE OF THEIR SAID POSITIONS TO BLOCK FLUID COMMUNICATION BETWEEN SAID PORTS; AND MEANS RESPONSIVE TO THE PRESSURE DIFFERENTIAL BETWEEN THE EXTERIOR AND INTERIOR OF SAID CONTROL VALVE FOR POSITIONING SAID SLEEVE MEMBER WITH RESPECT TO THE DOWNSTREAM ONE OF SAID TUBULAR MEMBERS AS SAID TUBULAR MEMBERS ARE RELATIVELY MOVED TO THE OTHER OF THEIR SAID POSITIONS TO OPEN FLUID COMMUNICATION BETWEEN SAID PORTS, SAID PRESSURERESPONSIVE MEANS RESPONDING TO A GREATER INTERIOR PRESSURE TO MAINTAIN SAID SLEEVE MEMBER STATIONARY RELATIVE TO SAID OUTER MEMBER AND RESPONSING TO A GREATER RELATIVE TO SAID SURE TO MAINTAIN SAID SLEEVE MEMBER STATIONARY RELATIVE TO SAID INNER MEMBER.
Claim 2
Dependent Claim
181 words
A TUBULAR CONTROL VALVE ADAPTED FOR CONNECTION TO A TUBULAR STRING FOR OPERATION IN A WELL BORE COMPRISING: INNER AND OUTER TUBULAR MEMBERS EACH HAVING A LATERAL PORT AND TELESCOPICALLY ARRANGED TOGETHER FOR RELATIVE MOVEMENT BETWEEN SPACED POSITIONS; A SLEEVE MEMBER SLIDABLY DISPOSED BETWEEN SAID TUBULAR MEMBERS; SEALING MEANS ON SAID SLEEVE MEMBER AND FLUIDLY SEALED TO SAID TUBULAR MEMBERS; MEANS RETAINING SAID SLEEVE MEMBER AND SEALING MEANS BETWEEN SAID PORTS WHENEVER SAID TUBULAR MEMBERS ARE IN ONE OF THEIR SAID POSITIONS TO BLOCK FLUID COMMUNICATION BETWEEN SAID PORTS; AND MEANS RESPONSIVE TO THE PRESSURE DIFFERENTIAL BETWEEN THE EXTERIOR AND INTERIOR OF SAID CONTROL VALVE FOR POSITIONING SAID SLEEVE MEMBER WITH RESPECT TO THE DOWNSTREAM ONE OF SAID TUBULAR MEMBERS AS SAID TUBULAR MEMBERS ARE RELATIVELY MOVED TO THE OTHER OF THEIR SAID POSITIONS TO OPEN FLUID COMMUNICATION BETWEEN SAID PORTS, SAID PRESSURERESPONSIVE MEANS RESPONDING TO A GREATER INTERIOR PRESSURE TO MAINTAIN SAID SLEEVE MEMBER STATIONARY RELATIVE TO SAID OUTER MEMBER AND RESPONSING TO A GREATER RELATIVE TO SAID SURE TO MAINTAIN SAID SLEEVE MEMBER STATIONARY RELATIVE TO SAID INNER MEMBER.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |