US3360045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of heavy crude oil by steam drive
Assignee: Phillips Petroleum Co
•
Filing: 1965-12-15
•
Granted: 1967-12-26
•
Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Santourian Melcon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:52
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A PROCESS FOR PODUCING OIL FROM A PERMEABLE STRATUM CONTAINING A HEAVY CRUDE OIL, SAID STRATUM BEING PENETRATED BY AN INJECTION WELL AND AN OFFSET PRODUCTION WELL, WHICH COMPRISES THE STEPS OF: (1) DRIVING A HOT NON-AQUEOUS GAS THRU A RESTRICTED SUBSTANTIALLY HORIZONTAL ZONE OF SAID STRATUM AT AN INTERMEDIATE LEVEL THEREOF SO AS TO DISPLACE OIL THEREFROM INTO SAID PRODUCTION WELL AND OPEN UP SAME TO INCREASE FLUID FLOW; (2) THEREAFTER, INJECTING STEAM THRU SAID INJECTING WELL ALONG SUBSTANTIALLY THE ENTIRE FACE OF SAID STRATUM AND DRIVING SAME TOWARD SAID PRODUCTION WELL SO AS TO DISPLACE ADDITIONAL OIL INTO SAID PRODUCTION WELL; AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |