Patent US3189100A successfully refreshed from Google Patents.
US3189100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater wellhead with cement return line
Assignee: Shell USA Inc
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Filing: 1962-06-27
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Granted: 1965-06-15
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Expires: 1982-06-27
Abstract
No abstract record available.
Inventors
- 👤 John A Haeber
- 👤 Raymond F Perner
- 👤 Jr Frank Poorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:46
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
AN UNDERWATER DRILLING WELLHEAD ASSEMBLY FIXEDLY POSITIONED TO THE OCEAN FLOOR AND ADAPTED TO HAVE AN OPERATIONAL PLATFORM POSITIONED SUBSTANTIALLY THEREABOVE SAID WELLHEAD ASSEMBLY COMPRISING (A) A TUBULAR WELL MEMBER EXTENDING INTO THE OCEAN FLOOR AND FIXEDLY POSITIONED THEREIN WITH THE UPPER END THEREOF EXTENDING ABOVE THE OCEAN FLOOR, (B) SIDE CONDUIT MEANS EXTENDING SUBSTANTIALLY LATERALLY FROM SAID TUBULAR WELL MEMBER AND BEING IN COMMUNICATION WITH THE INTERIOR THEREOF, SAID SIDE CONDUIT MEANS EXTENDING UPWARDLY FROM SAID DRILLING WELLHEAD ASSEMBLY TO SAID OPERATIONAL PLATFORM AT THE SURFACE OF A BODY OF WATER, (C) CONDUIT DISCONNECT MEANS IN SAID SIDE CONDUIT MEANS AT A LEVEL ADJACENT SAID WELLHEAD ASSEMBLY AND (D) FIRST VALVE MEANS IN SAID SIDE CONDUIT MEANS BETWEEN THE TUBULAR WELL MEMBER AND THE CONDUIT DISCONNECT MEANS,
Claim 2
Dependent Claim
128 words
AN UNDERWATER DRILLING WELLHEAD ASSEMBLY FIXEDLY POSITIONED TO THE OCEAN FLOOR AND ADAPTED TO HAVE AN OPERATIONAL PLATFORM POSITIONED SUBSTANTIALLY THEREABOVE SAID WELLHEAD ASSEMBLY COMPRISING (A) A TUBULAR WELL MEMBER EXTENDING INTO THE OCEAN FLOOR AND FIXEDLY POSITIONED THEREIN WITH THE UPPER END THEREOF EXTENDING ABOVE THE OCEAN FLOOR, (B) SIDE CONDUIT MEANS EXTENDING SUBSTANTIALLY LATERALLY FROM SAID TUBULAR WELL MEMBER AND BEING IN COMMUNICATION WITH THE INTERIOR THEREOF, SAID SIDE CONDUIT MEANS EXTENDING UPWARDLY FROM SAID DRILLING WELLHEAD ASSEMBLY TO SAID OPERATIONAL PLATFORM AT THE SURFACE OF A BODY OF WATER, (C) CONDUIT DISCONNECT MEANS IN SAID SIDE CONDUIT MEANS AT A LEVEL ADJACENT SAID WELLHEAD ASSEMBLY AND (D) FIRST VALVE MEANS IN SAID SIDE CONDUIT MEANS BETWEEN THE TUBULAR WELL MEMBER AND THE CONDUIT DISCONNECT MEANS,
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |