US3202218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submergible apparatus for underwater operations
Assignee: Vetco Gray LLC
•
Filing: 1962-06-18
•
Granted: 1965-08-24
•
Expires: 1982-06-18
Abstract
No abstract record available.
Inventors
- 👤 John D Watts
- 👤 Slack John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:43
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/037; E21B37/00; E21B37/06; Y; Y10; Y10T; Y10T137/00; Y10T137/402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A METHOD OF CONDUCTING WELL-FORMING OPERATIONS IN WATERWHERE IT IS DESIRED TO EFFECT A WELL HEAD BLOEW THE MIUD LINE OF A SUBMERGED BOTTOM COMPRISING: SETTING A PIPE OF RELATIVELY LARGE DIAMETER SUBSTANTIALLY VERTICALLY INTO THE SUBMERGED BOTTOM WITH THGE UPPER END OF SAID PIPE ABOVE THE SURFACE OF THE WATER, RELEASABLY SECURING A VERTICALLY ELONGAGED HOUSING WHICH DEFINES A CHAMBER FOR WORKMEN AT THE UPPER END OF SAID PIPE; DRIVING SAID PIPE AND SAID HOUSING DOWNWARDLY TO A POSITIONAT WHICH THE TOP OF SAID PIPE LIES BELOW THE MUD LINE A DISTANCE SUBSTANTIALLY EQUAL TO THE HEIGHT OF WELL-COMPLETION EQUIPMENT TO BE MOUNTED ON THE TOP OF SAID PIPE AND AT WHICH THE TOP OF SAID HOUSING REMAINS ABOVE THE WATER SURFACE; CONDUCTING DRILLING OPERATIONS FROM ABOVE THE SURFACE THROUGH SAID HOUSING AND THROUGH SAID PIPE; ESTABLISHING A WELL HEAD AT THE UPPER END OF SAID PIPE WITHIN SAID CHAMBER; INSTALLING A PROTECTIVE COVER OVER SAID WELL HEAD WHILE SAID HOUSING HOLDS OFF MUD; AND SUBSEQUENTIALLY PERMITTING MUD TO SUBSTANTIALLY BURRY THE PROTRECTIVE COVER BY RELEASING AND REMOVING SAID HOUSING.
Claim 2
Independent Claim
181 words
A METHOD OF CONDUCTING WELL-FORMING OPERATIONS IN WATERWHERE IT IS DESIRED TO EFFECT A WELL HEAD BLOEW THE MIUD LINE OF A SUBMERGED BOTTOM COMPRISING: SETTING A PIPE OF RELATIVELY LARGE DIAMETER SUBSTANTIALLY VERTICALLY INTO THE SUBMERGED BOTTOM WITH THGE UPPER END OF SAID PIPE ABOVE THE SURFACE OF THE WATER, RELEASABLY SECURING A VERTICALLY ELONGAGED HOUSING WHICH DEFINES A CHAMBER FOR WORKMEN AT THE UPPER END OF SAID PIPE; DRIVING SAID PIPE AND SAID HOUSING DOWNWARDLY TO A POSITIONAT WHICH THE TOP OF SAID PIPE LIES BELOW THE MUD LINE A DISTANCE SUBSTANTIALLY EQUAL TO THE HEIGHT OF WELL-COMPLETION EQUIPMENT TO BE MOUNTED ON THE TOP OF SAID PIPE AND AT WHICH THE TOP OF SAID HOUSING REMAINS ABOVE THE WATER SURFACE; CONDUCTING DRILLING OPERATIONS FROM ABOVE THE SURFACE THROUGH SAID HOUSING AND THROUGH SAID PIPE; ESTABLISHING A WELL HEAD AT THE UPPER END OF SAID PIPE WITHIN SAID CHAMBER; INSTALLING A PROTECTIVE COVER OVER SAID WELL HEAD WHILE SAID HOUSING HOLDS OFF MUD; AND SUBSEQUENTIALLY PERMITTING MUD TO SUBSTANTIALLY BURRY THE PROTRECTIVE COVER BY RELEASING AND REMOVING SAID HOUSING.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |