US3293867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for marking, relocating, and re-establishing contact with a submarine wellhead
Assignee: Mobil Oil AS
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Filing: 1965-09-30
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Granted: 1966-12-27
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 James T Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:01
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/74; E; E21; E21B; E21B41/00; E21B41/0007; E21B41/0014; G01S1/00; G01S1/72; G01S1/725; G01S5/00; G01S5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A METHOD OF MARKING, RELOCATING, AND RE-ESTABLISHING CONTACT WITH A SUBMARINE WELLHEAD, SAID WELLHEAD BEING ASSOCIATED WITH AT LEAST ONE GUIDE LINE SECURED ADJACENT THERETO AND OF A SUFFICIENT LENGTH TO EXTEND TO THE SURFACE OF THE WATER IN WHICH THE WELLHEAD IS SUBMERGED, SAID METHOD COMPRISING THE STEPS OF: (A) ENGAGING A BUOYANT BUOY WITH SAID GUIDELINE NEAR THE UPPER END THEREOF, (B) SUBMERGING SAID BUOY ALONG SAID GUIDELINE TO A PREDETERMINED DEPTH; (C) SECURING SAID BUOY ON SAID GUIDELINE WITH THE PORTION OF SAID GUIDELINE BETWEEN SAID BUOY AND SAID WELLHEAD BEING MAINTAINED IN A TAUT STATE; (D) THEREAFTER, RELOCATING SAID BUOY IN SAID WATER; (E) RELEASING THE CONNECTION BETWEEN SAID BUOY AND SAID GUIDELINE; AND (F) RAISING SAID BUOY ALONG SAID GUIDELINE TO THE SURFACE OF SAID WATER WHEREBY THE UPPER END OF SAID GUIDELINE IS RAISED TO THE SURFACE.
Claim 2
Dependent Claim
144 words
IN A METHOD OF MARKING, RELOCATING, AND RE-ESTABLISHING CONTACT WITH A SUBMARINE WELLHEAD, SAID WELLHEAD BEING ASSOCIATED WITH AT LEAST ONE GUIDE LINE SECURED ADJACENT THERETO AND OF A SUFFICIENT LENGTH TO EXTEND TO THE SURFACE OF THE WATER IN WHICH THE WELLHEAD IS SUBMERGED, SAID METHOD COMPRISING THE STEPS OF: (A) ENGAGING A BUOYANT BUOY WITH SAID GUIDELINE NEAR THE UPPER END THEREOF, (B) SUBMERGING SAID BUOY ALONG SAID GUIDELINE TO A PREDETERMINED DEPTH; (C) SECURING SAID BUOY ON SAID GUIDELINE WITH THE PORTION OF SAID GUIDELINE BETWEEN SAID BUOY AND SAID WELLHEAD BEING MAINTAINED IN A TAUT STATE; (D) THEREAFTER, RELOCATING SAID BUOY IN SAID WATER; (E) RELEASING THE CONNECTION BETWEEN SAID BUOY AND SAID GUIDELINE; AND (F) RAISING SAID BUOY ALONG SAID GUIDELINE TO THE SURFACE OF SAID WATER WHEREBY THE UPPER END OF SAID GUIDELINE IS RAISED TO THE SURFACE.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |