US3277969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater drilling
Assignee: Pan American Petroleum Corp
•
Filing: 1964-02-07
•
Granted: 1966-10-11
•
Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Renic P Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:22
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B17/00; E21B17/01; E21B7/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
APPARATUS FOR CONDUCTING OPERATIONS IN A WELL IN A FORMATION UNDERLYING A BODY OF WATER, WHICH APPARATUS COMPRISES: A FLOATING VESSEL POSITIONED ABOVE SAID FORMATION, A CONDUIT EXTENDING DOWNWARDLY FROM SAID VESSEL TO SAID WELL, SAID CONDUIT BEING CONNECTED TO SAID VESSEL ADJACENT ITS UPPER END AND HAVING ITS LOWER END ANCHORED ADJACENT SAID FORMATION, SAID CONDUIT BEING FLEXIBLE AT A LOCATION NEAR ITS LOWER END TO PERMIT LATERAL MOVEMENT OF THE UPPER PORTION OF SAID CONDUIT, AN ELONGATED ELEMENT INSIDE SAID CONDUIT AND ADJACENT THE LOWER END THEREOF AND EXTENDING ACROSS SAID FLEXIBLE LOCATION TO BEAR AGAINST SAID CONDUIT WHEN THE UPPER PORTION OF SAID CONDUIT MOVES LATERALLY, AND SENSING MEANS CONNECTED TO SAID CONDUIT TO SENSE THE BEARING FORCE OF SAID CONDUIT AGAINST SAID ELONGATED ELEMENT AND TO PROVIDE AN INDICATION OF THE LATERAL MOVEMENT OF SAID CONDUIT.
Claim 2
Dependent Claim
140 words
APPARATUS FOR CONDUCTING OPERATIONS IN A WELL IN A FORMATION UNDERLYING A BODY OF WATER, WHICH APPARATUS COMPRISES: A FLOATING VESSEL POSITIONED ABOVE SAID FORMATION, A CONDUIT EXTENDING DOWNWARDLY FROM SAID VESSEL TO SAID WELL, SAID CONDUIT BEING CONNECTED TO SAID VESSEL ADJACENT ITS UPPER END AND HAVING ITS LOWER END ANCHORED ADJACENT SAID FORMATION, SAID CONDUIT BEING FLEXIBLE AT A LOCATION NEAR ITS LOWER END TO PERMIT LATERAL MOVEMENT OF THE UPPER PORTION OF SAID CONDUIT, AN ELONGATED ELEMENT INSIDE SAID CONDUIT AND ADJACENT THE LOWER END THEREOF AND EXTENDING ACROSS SAID FLEXIBLE LOCATION TO BEAR AGAINST SAID CONDUIT WHEN THE UPPER PORTION OF SAID CONDUIT MOVES LATERALLY, AND SENSING MEANS CONNECTED TO SAID CONDUIT TO SENSE THE BEARING FORCE OF SAID CONDUIT AGAINST SAID ELONGATED ELEMENT AND TO PROVIDE AN INDICATION OF THE LATERAL MOVEMENT OF SAID CONDUIT.
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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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |