US3357486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well casing hanger
Assignee: Atlantic Richfield Co
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Filing: 1965-06-22
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Granted: 1967-12-12
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Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:28
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN AN UNDERWATER CASING HANGER ASSEMBLY FOR HANING A CASING STRING IN A TUBULAR MEMBER HAVING A SHOULDER THEREIN AND AFFIXED TO A FORMATION UNDERLYING A BODY OF WATER AND WHEREIN A CASING HANGER MANDREL CONNECTIBLE TO THE UPPER END OF SAID CASING STRING IS ADAPTED TO LAND ON SAID SHOULDER AND IS OF SUCH A CONFIGURATION THAT AN ANNULAR PATH IS DEFINED BETWEEN SAID MANDREL AND SAID TUBULAR MEMBER, AND WHEREIN ANNULAR SEALING MEANS ARE PROVIDED BETWEEN SAID MANDREL AND SAID MEMBER WHICH ARE OF A CONFIGURATION THAT PERMITS FLUIDS TO PASS SAID SEAL BEFORE SAID SEAL IS EXTRUDED IN SAID ANNULUS, THE IMPROVEMENT COMPRISING:
Claim 2
Dependent Claim
106 words
IN AN UNDERWATER CASING HANGER ASSEMBLY FOR HANING A CASING STRING IN A TUBULAR MEMBER HAVING A SHOULDER THEREIN AND AFFIXED TO A FORMATION UNDERLYING A BODY OF WATER AND WHEREIN A CASING HANGER MANDREL CONNECTIBLE TO THE UPPER END OF SAID CASING STRING IS ADAPTED TO LAND ON SAID SHOULDER AND IS OF SUCH A CONFIGURATION THAT AN ANNULAR PATH IS DEFINED BETWEEN SAID MANDREL AND SAID TUBULAR MEMBER, AND WHEREIN ANNULAR SEALING MEANS ARE PROVIDED BETWEEN SAID MANDREL AND SAID MEMBER WHICH ARE OF A CONFIGURATION THAT PERMITS FLUIDS TO PASS SAID SEAL BEFORE SAID SEAL IS EXTRUDED IN SAID ANNULUS, THE IMPROVEMENT COMPRISING:
References Cited (Backward Citations)
US3273646A
Cited
US3305015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |