US3352357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible marine conductor with cellar pipe
Assignee: Shell USA Inc
•
Filing: 1965-10-19
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Granted: 1967-11-14
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Expires: 1985-10-19
Abstract
Abstract 1,033,846. Boring earth; wells. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Nov. 20, 1964, No. 47427/64. Heading E1F. An underwater well comprises a conductor pipe 4 and a cellar pipe 1 cemented to the water bed 2. The conductor pipe is centralized by members 8 and is cemented to the bed and the cellar pipe which is sealed by a flexible or movable cap 11. In a modification the lower end of the cellar pipe is tapered to dispense with the members 8. In a further modification the cellar pipe has a frusto-conical bottom welded to the conductor pipe. A platform 5 may be mounted on the conductor pipe which may also carry a wellhead 6 after the well has been drilled.
Inventors
- 👤 Wouter H Van Eek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/20; E21B17/01; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; E21B33/10; E21B33/13; E21B33/14; E21B33/143; E21B43/00; E21B43/01; E21B33/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PIPE SYSTEM FOR AN UNDERWATER WELL COMPRISING A CONDUCTOR PIPE EXTENDING BETWEEN A LEVEL LOCATED ABOVE THE WATER LEVEL AND A DEPTH LOCATED BELOW THE BOTTOM OF A BODY OF WATER, A PIPE STRING WITHIN SAID CONDUCTOR PIPE AND A CELLAR PIPE SURROUNDING THE CONDUCTOR PIPE TO FORM AN ANNULAR SPACE BETWEEN SAID PIPES AND EXTENDING FROM A LEVEL LOCATED ABOVE THE BOTTOM OF THE BODY OF WATER BUT BELOW THE WATER LEVEL TO A DEPTH BELOW THE BOTTOM OF THE BODY OF WATER WHICH IS NO GREATER THAN THE DEPTH OF THE CONDUCTOR PIPE, SAID CELLAR PIPE BEING CEMENTED OVER AT LEAST PART OF ITS LENGTH TO THE FORMATION UNDERLYING THE BOTTOM OF THE BODY OF WATER.
Claim 2
Dependent Claim
119 words
A PIPE SYSTEM FOR AN UNDERWATER WELL COMPRISING A CONDUCTOR PIPE EXTENDING BETWEEN A LEVEL LOCATED ABOVE THE WATER LEVEL AND A DEPTH LOCATED BELOW THE BOTTOM OF A BODY OF WATER, A PIPE STRING WITHIN SAID CONDUCTOR PIPE AND A CELLAR PIPE SURROUNDING THE CONDUCTOR PIPE TO FORM AN ANNULAR SPACE BETWEEN SAID PIPES AND EXTENDING FROM A LEVEL LOCATED ABOVE THE BOTTOM OF THE BODY OF WATER BUT BELOW THE WATER LEVEL TO A DEPTH BELOW THE BOTTOM OF THE BODY OF WATER WHICH IS NO GREATER THAN THE DEPTH OF THE CONDUCTOR PIPE, SAID CELLAR PIPE BEING CEMENTED OVER AT LEAST PART OF ITS LENGTH TO THE FORMATION UNDERLYING THE BOTTOM OF THE BODY OF WATER.
References Cited (Backward Citations)
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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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |