US3353595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater well completions
Assignee: Cooper Industries LLC
•
Filing: 1964-05-22
•
Granted: 1967-11-21
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Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bobby H Nelson
- 👤 David L Gruller
- 👤 Leonard E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/0007; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/04; E21B33/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A METHOD OF COMPLETING AN OFFSHORE WELL INCLUDING A CASING HEAD DISPOSED AT AN UNDERWATER LEVEL, A GUIDE SYSTEM EXTENDING DOWNWARDLY FROM THE WATER LEVEL TO THE UNDERWATER LEVEL, AND PRESSURE CONTROL EQUIPMENT RELEASABLY CONNECTED IN A PREDETERMINED ROTATIONAL POSITION TO THE UPPER END OF THE CASING HEAD; THE STEPS OF LOWERING A TUBING HANGER HAVING PLURAL FLOW PASSAGES THERETHROUGH AND TUBING SUSPENDED FROM THE PASSAGES THROUGH THE CONTROL EQUIPMENT, ENGAGING THE HANGER WITH MEANS ON THE PRESSURE CONTROL EQUIPMENT, AS SAID TUBING HANGER IS SO LOWERED, TO ORIENT SAID TUBING HANGER INTO A DESIRED ROTATIONAL POSITION WITHIN THE CASING HEAD AND LANDING IT IN SUCH POSITION, RELEASING THE CONTROL EQUIPMENT FROM THE
Claim 2
Dependent Claim
114 words
IN A METHOD OF COMPLETING AN OFFSHORE WELL INCLUDING A CASING HEAD DISPOSED AT AN UNDERWATER LEVEL, A GUIDE SYSTEM EXTENDING DOWNWARDLY FROM THE WATER LEVEL TO THE UNDERWATER LEVEL, AND PRESSURE CONTROL EQUIPMENT RELEASABLY CONNECTED IN A PREDETERMINED ROTATIONAL POSITION TO THE UPPER END OF THE CASING HEAD; THE STEPS OF LOWERING A TUBING HANGER HAVING PLURAL FLOW PASSAGES THERETHROUGH AND TUBING SUSPENDED FROM THE PASSAGES THROUGH THE CONTROL EQUIPMENT, ENGAGING THE HANGER WITH MEANS ON THE PRESSURE CONTROL EQUIPMENT, AS SAID TUBING HANGER IS SO LOWERED, TO ORIENT SAID TUBING HANGER INTO A DESIRED ROTATIONAL POSITION WITHIN THE CASING HEAD AND LANDING IT IN SUCH POSITION, RELEASING THE CONTROL EQUIPMENT FROM THE
References Cited (Backward Citations)
US2679898A
Cited
US3042427A
Cited
US3096999A
Cited
US3186486A
Cited
US3020069A
Cited
US3062288A
Cited
US3219117A
Cited
US3236301A
Cited
US3220477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |