US3295600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater production method
Assignee: Richfield Oil Corp
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Filing: 1965-10-22
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Granted: 1967-01-03
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
- 👤 Jr Charles E Wakefield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:14
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD FOR COMPLETING A WELL IN A FORMATION UNDERLYING A BODY OF WATER FROM A STRUCTURE OVER SAID WELL, THE STEPS COMPRISING: INSTALLING A TUBING HEAD IN SAID WELL ADJACENT SAID FORMATION, INSTALLING PRODUCTION TUBING ON A TUBING HANGER MANDREL AT SAID STRUCTURE, LOWERING SAID TUBING AND TUBING HANGER MANDREL FROM LANDING SAID TUBING HANGER MANDREL ON A SHOULDER IN LANDING SAID TUBING HANGER MANDREL ON A SHOULDER IN SAID TUBING HEAD, MECHANICALLY LOCKING SAID TUBING HANGER MANDREL IN A RECESS IN SAID TUBING HEAD, AND EXTRUDING PACKING IN THE ANNULUS BETWEEN SAID TUBING HANGER MANDREL AND SAID TUBING HEAD BY HYDRAULICALLY MOVING PISTON MEANS ASSOCIATED WITH SAID TUBING HANGER MANDREL BETWEEN SAID RECESS AND SAID SHOULDER.
Claim 2
Independent Claim
118 words
A METHOD FOR COMPLETING A WELL IN A FORMATION UNDERLYING A BODY OF WATER FROM A STRUCTURE OVER SAID WELL, THE STEPS COMPRISING: INSTALLING A TUBING HEAD IN SAID WELL ADJACENT SAID FORMATION, INSTALLING PRODUCTION TUBING ON A TUBING HANGER MANDREL AT SAID STRUCTURE, LOWERING SAID TUBING AND TUBING HANGER MANDREL FROM LANDING SAID TUBING HANGER MANDREL ON A SHOULDER IN LANDING SAID TUBING HANGER MANDREL ON A SHOULDER IN SAID TUBING HEAD, MECHANICALLY LOCKING SAID TUBING HANGER MANDREL IN A RECESS IN SAID TUBING HEAD, AND EXTRUDING PACKING IN THE ANNULUS BETWEEN SAID TUBING HANGER MANDREL AND SAID TUBING HEAD BY HYDRAULICALLY MOVING PISTON MEANS ASSOCIATED WITH SAID TUBING HANGER MANDREL BETWEEN SAID RECESS AND SAID SHOULDER.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |