Patent US2747840A successfully refreshed from Google Patents.
US2747840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for developing underwater reservoirs
Assignee: Phillips Petroleum Co
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Filing: 1953-06-12
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Granted: 1956-05-29
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Expires: 1973-06-12
Abstract
No abstract record available.
Inventors
- 👤 Miles Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/01; E21B43/017; B; B65; B65D; B65D88/00; B65D88/78; E21B7/00; E21B7/12; E21B7/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
AN APPARATUS FOR OFF-SHORE DRILLING COMPRISING, IN COMBINATION, AN UNDERWATER CELLAR, AN ALLEYWAY LEADING FROM SAID CELLAR TO THE SHORE, SAID CELLAR AND SAID ALLEYWAY BEING COUNTERSUNK INTO THE EARTH BENEATH A BODY OF WATER TO SUCH AN EXTENT THAT THE TOPS OF SAID CELLAR AND ALLEYWAY ARE ABOUT FLUSH WITH THE EARTH SURFACE BENEATH SAID BODY OF WATER, A BARGE SUPPORT RESTING ON SAID CELLAR, A FLOATABLE DRILLING BARGE AT LEAST PARTIALLY SUBMERGED RESTING UPON SAID BARGE SUPPORT, A DEEP WELL DRILLING RIG DISPOSED ON SAID BARGE, A FIRST OPENING IN THE BOTTOM OF SAID CELLAR, SAID FIRST OPENING IN WATER-TIGHT CONTACT WITH THE EARTH, A SECOND OPENING IN THE ROOF OF SAID CELLAR DIRECTLY ABOVE SAID FIRST OPENING, A TUBE ATTACHED WATER-TIGHT TO THE CELLAR ROOF SURROUNDING SAID SECOND OPENING AND EXTENDING TO A LEVEL ABOVE THE LEVEL OF SAID BODY OF WATER, THE OEPNINGS AND SAID TUBE BEING ADAPTED TO ACCOMMODATE CASING AND DRILLING EQUIPMENT AND SAID FIRST OPENING BEING FURTHER ADAPTED TO ACCOMMODATE PRODUCTION EQUIPMENT.
Claim 2
Independent Claim
169 words
AN APPARATUS FOR OFF-SHORE DRILLING COMPRISING, IN COMBINATION, AN UNDERWATER CELLAR, AN ALLEYWAY LEADING FROM SAID CELLAR TO THE SHORE, SAID CELLAR AND SAID ALLEYWAY BEING COUNTERSUNK INTO THE EARTH BENEATH A BODY OF WATER TO SUCH AN EXTENT THAT THE TOPS OF SAID CELLAR AND ALLEYWAY ARE ABOUT FLUSH WITH THE EARTH SURFACE BENEATH SAID BODY OF WATER, A BARGE SUPPORT RESTING ON SAID CELLAR, A FLOATABLE DRILLING BARGE AT LEAST PARTIALLY SUBMERGED RESTING UPON SAID BARGE SUPPORT, A DEEP WELL DRILLING RIG DISPOSED ON SAID BARGE, A FIRST OPENING IN THE BOTTOM OF SAID CELLAR, SAID FIRST OPENING IN WATER-TIGHT CONTACT WITH THE EARTH, A SECOND OPENING IN THE ROOF OF SAID CELLAR DIRECTLY ABOVE SAID FIRST OPENING, A TUBE ATTACHED WATER-TIGHT TO THE CELLAR ROOF SURROUNDING SAID SECOND OPENING AND EXTENDING TO A LEVEL ABOVE THE LEVEL OF SAID BODY OF WATER, THE OEPNINGS AND SAID TUBE BEING ADAPTED TO ACCOMMODATE CASING AND DRILLING EQUIPMENT AND SAID FIRST OPENING BEING FURTHER ADAPTED TO ACCOMMODATE PRODUCTION EQUIPMENT.
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |