US2857002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of viscous crude oil
Assignee: Texaco Inc
•
Filing: 1956-03-19
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Granted: 1958-10-21
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Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Pevere
- 👤 Herbert E Vermillion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:37
CPC Classifications
C; C10; C10G; C10G47/00; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR PRODUCING A VISCOUS CRUDE OIL FROM AN UNDERGROUND FORMATION PENETRATED BY A WELL BORE, SAID CRUDE OIL HAVING A VISCOSITY AT 80*F. IN THE RANGE 6,000400,000 SAYBOLT UNIVERSAL SECONDS WHICH INTRODUCING GASEOUS HYDROGEN CONTAINING A VAPORIZED VALATILE HYDROGENATION CATALYST ADMIXED THEREWITH VIA SAID WELL BORE INTO THE UPPER PORTION OF SAID FORMATION, CONTACTING SAID CRUDE OIL IN SITU IN THE UPPER PORTION OF SAID FORMATION
Claim 2
Dependent Claim
68 words
A PROCESS FOR PRODUCING A VISCOUS CRUDE OIL FROM AN UNDERGROUND FORMATION PENETRATED BY A WELL BORE, SAID CRUDE OIL HAVING A VISCOSITY AT 80*F. IN THE RANGE 6,000400,000 SAYBOLT UNIVERSAL SECONDS WHICH INTRODUCING GASEOUS HYDROGEN CONTAINING A VAPORIZED VALATILE HYDROGENATION CATALYST ADMIXED THEREWITH VIA SAID WELL BORE INTO THE UPPER PORTION OF SAID FORMATION, CONTACTING SAID CRUDE OIL IN SITU IN THE UPPER PORTION OF SAID FORMATION
References Cited (Backward Citations)
US2595979A
Cited
US2742406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |