US3368619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for working on underwater wells
Assignee: Chevron USA Inc
•
Filing: 1966-06-13
•
Granted: 1968-02-13
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 William R Postlewaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:28
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/10; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B41/0007; E21B41/0014
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
THE METHOD OF CONNECTING A GUIDELINE TO A SUBMERGED GUIDEPOST COMPRISING DETACHABLY MOUNTING A GUIDELINE COUPLING ELEMENT ADJACENT THE LOWER END OF A STRING OF PIPE, SAID COUPLING ELEMENT HAVING A GUIDELINE CONNECTED THERETO, LOWERING SAID STRING OF PIPE VERTICALLY FROM SAID PLATFORM TO PLACE SAID LOWER END IN THE VICINITY OF SAID GUIDEPOST WHILE RETAINING THE UPPER END PORTION OF SAID STRING OF PIPE AT SAID PLATFORM, DETERMINING THE POSITION OF SAID LOWER END OF SAID STRING OF PIPE IN RELATION OF SAID GUIDEPOST, MOVING THE LOWER END OF SAID STRING OF PIPE TOWARD AND INTO CONTACT WITH A SIDE WALL OF SAID GUIDEPOST IN A POSITION ORIENTED TO DISPOSE SAID COUPLING ELEMENT APPROXIMATELY AXIALLY ABOVE SAID GUIDEPOST, LOWERING SAID STRING OF PIPE FROM SAID PLATFORM WHILE MAINTAINING SAID CONTACT BETWEEN THE SAID LOWER END OF SAID STRING OF PIPE AND SAID WALL OF SAID GUIDEPOST,
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |