Patent US3626701A successfully refreshed from Google Patents.
US3626701A
Expired / Lapsed
US
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Emergent installation for drilling and production at great depth at sea
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1970-03-26
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Granted: 1971-12-14
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Expires: 1990-03-26
Abstract
Abstract AN EMERGENT DRILLING AND PRODUCTION INSTALLATION FOR OPERATING AT GREAT DEPTHS AT SEA, ESPECIALLY FOR THE PRODUCTION OF HYDROCARBONS FROM A FIELD UNDER THE SEA-BED, COMPRISING THE COMBINATION OF AN OSCILLATING COLUMN HAVING A POSITIVE BUOYANCY, SUPPORTING AT ITS UPPER PORTION A DRILLING AND PRODUCTION PLATFORM AND ARTICULATED AT ITS LOWER PORTION, WITH TWO DEGREES OF FREEDOM, ON A BASE HAVING A HIGH POSITIVE BUOYANCY AND FIXED TO THE SEA-BED AT A PRE-DETERMINED DISTANCE THEREFROM BY ANCHORAGE MEMBERS UNDER TENSION DRIVEN AND CEMENTED INTO THE SEA-BED. THE OSCILLATING COLUMN MAY BE PROVIDED WITH INTERNAL STORAGE COMPARTMENTS FOR RECEIVING PART OF THE PRODUCTS OBTAINED.
Inventors
- 👤 Maurice Laffont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:55
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/44; B63B35/4406; E; E21; E21B; E21B15/00; E21B15/02; E21B43/00; E21B43/01; E21B7/00; E21B7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |