US3313345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for offshore drilling and well completion
Assignee: Chevron USA Inc
•
Filing: 1964-06-02
•
Granted: 1967-04-11
•
Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Fischer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:23
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B7/00; E21B7/12; E21B7/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
FOR USE OFFSHORE, AN ELONGATED TUBULAR CONDUIT INCLUDING AN ELONGATED LOWER TUBULAR MEMBER AND AN ELONGATED UPPER TUBULAR MEMBER CONNECTED TO SAID LOWER MEMBER IN AXIALLY ALIGNED TELESCOPIC RELATIONSHIP, MEANS FOR FIXING THE LOWER END OF SAID LOWER MEMBER AGAINST AXIAL MOVEMENT RELATIVE TO THE OCEAN BOTTOM, MEANS FOR ATTACHING THE UPPER END OF SAID UPPER MEMBER TO A PLATFORM FOR AXIAL MOVEMENT THEREWITH RELATIVE TO SAID LOWER MEMBER, AND ADJUSTABLY VARIABLE FLUID PRESSURE MEANS ON SAID PLATFORM OPERATIVELY CONNECTED TO EXERT A REGULATED SUBSTANTIALLY CONSTANT UPWARD PRESELECTED AXIAL FORCE ON THE UPPER PORTION OF SAID LOWER MEMBER AS SAID UPPER MEMBER MOVES AXIALLY RELATIVE TO SAID LOWER MEMBER WITHIN SELECTED DESIGN LIMITS.
Claim 2
Dependent Claim
113 words
FOR USE OFFSHORE, AN ELONGATED TUBULAR CONDUIT INCLUDING AN ELONGATED LOWER TUBULAR MEMBER AND AN ELONGATED UPPER TUBULAR MEMBER CONNECTED TO SAID LOWER MEMBER IN AXIALLY ALIGNED TELESCOPIC RELATIONSHIP, MEANS FOR FIXING THE LOWER END OF SAID LOWER MEMBER AGAINST AXIAL MOVEMENT RELATIVE TO THE OCEAN BOTTOM, MEANS FOR ATTACHING THE UPPER END OF SAID UPPER MEMBER TO A PLATFORM FOR AXIAL MOVEMENT THEREWITH RELATIVE TO SAID LOWER MEMBER, AND ADJUSTABLY VARIABLE FLUID PRESSURE MEANS ON SAID PLATFORM OPERATIVELY CONNECTED TO EXERT A REGULATED SUBSTANTIALLY CONSTANT UPWARD PRESELECTED AXIAL FORCE ON THE UPPER PORTION OF SAID LOWER MEMBER AS SAID UPPER MEMBER MOVES AXIALLY RELATIVE TO SAID LOWER MEMBER WITHIN SELECTED DESIGN LIMITS.
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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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |