US3357488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool control apparatus
Assignee: Schlumberger Technology Corp
•
Filing: 1965-12-10
•
Granted: 1967-12-12
•
Expires: 1985-12-10
Abstract
No abstract record available.
Inventors
- 👤 Howard L Mcgill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:22
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A WELL TOOL SIZED AND ADAPTED FOR RECEPTION IN A WELL BORE COMPRISING: A TUBULAR HOUSING; A MANDREL MOVABLY DISPOSED WITHIN SAID HOUSING; MEANS COUPLING SAID MANDREL TO SAID HOUSING FOR SECURING SAID MANDREL AGAINST SUBSTANTIAL LONGITUDINAL SHIFTING IN ONE ANGULAR POSITION OF SAID MANDREL RELATIVE TO SAID HOUSING AND FOR FREEING SAID MANDREL FOR LONGITUDINAL SHIFTING BETWEEN SPACED POSITIONS IN OTHER ANGULAR POSITIONS OF SAID MANDREL RELATIVE TO SAID HOUSING; PRESSURE-RESPONSIVE MEANS MOVABLY MOUNTED ON SAID HOUSING AND MOVABLE RELATIVE THERETO IN RESPONSE TO A HYDRAULIC PRESSURE; PRESSURE-DEVELOPING MEANS INCLUDING PISTON MEANS FLUIDLY SEALED WITHIN SAID HOUSING AND SLIDABLE IN RESPONSE TO SHIFTING OF SAID MANDREL TOWARD ONE OF SAID SPACED POSITIONS FOR DEVELOPING AN INCREASED HYDRAULIC PRESSURE; CONTROL MEANS INCLUDING FIRST, SECOND AND THIRD PASSAGE MEANS INTERCONNECTING SAID PRESSURE-DEVELOPING MEANS AND PRESSURE-RESPONSIVE MEANS, FIRST VALVE MEANS IN SAID FIRST PASSAGE MEANS
Claim 2
Dependent Claim
143 words
A WELL TOOL SIZED AND ADAPTED FOR RECEPTION IN A WELL BORE COMPRISING: A TUBULAR HOUSING; A MANDREL MOVABLY DISPOSED WITHIN SAID HOUSING; MEANS COUPLING SAID MANDREL TO SAID HOUSING FOR SECURING SAID MANDREL AGAINST SUBSTANTIAL LONGITUDINAL SHIFTING IN ONE ANGULAR POSITION OF SAID MANDREL RELATIVE TO SAID HOUSING AND FOR FREEING SAID MANDREL FOR LONGITUDINAL SHIFTING BETWEEN SPACED POSITIONS IN OTHER ANGULAR POSITIONS OF SAID MANDREL RELATIVE TO SAID HOUSING; PRESSURE-RESPONSIVE MEANS MOVABLY MOUNTED ON SAID HOUSING AND MOVABLE RELATIVE THERETO IN RESPONSE TO A HYDRAULIC PRESSURE; PRESSURE-DEVELOPING MEANS INCLUDING PISTON MEANS FLUIDLY SEALED WITHIN SAID HOUSING AND SLIDABLE IN RESPONSE TO SHIFTING OF SAID MANDREL TOWARD ONE OF SAID SPACED POSITIONS FOR DEVELOPING AN INCREASED HYDRAULIC PRESSURE; CONTROL MEANS INCLUDING FIRST, SECOND AND THIRD PASSAGE MEANS INTERCONNECTING SAID PRESSURE-DEVELOPING MEANS AND PRESSURE-RESPONSIVE MEANS, FIRST VALVE MEANS IN SAID FIRST PASSAGE MEANS
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |