US2889882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery by in situ combustion
Assignee: Phillips Petroleum Co
•
Filing: 1956-06-06
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Granted: 1959-06-09
•
Expires: 1976-06-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Schleicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/2401
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR PRODUCING AN OIL-BEARING FORMATION CONTAINING CRUDE OIL OF HIGH A.P.I. GRAVITY OF INSUFFICIENT CARBON RESIDUE TO PERMIT DRIVING A COMBUSTION FROM THRU SAID FORMATION WHICH COMPRISES ELECTRICALLY CARBONIZING OIL IN THE FORMATION AROUND AN INJECTION BOREHOLE THEREIN TO FORM A COKE DEPOSIT CAPABLE OF SUPPORTING COMBUSTION AND EXTENDING A DISTANCE FROM SAID BOREHOLE IN RANGE OF 3 TO 15 FEET; THEREAFTER INITIATING COMBUSTION OF THE COKE DEPOSIT BY CONTACTING SAID COKE WITH OXYGEN-CONTAINING GAS INJECTED THRU SAID INJECTION BOREHOLE UNDER COMBUSTION CONDITIONS TO ESTABLISH A COMBUSTION FRONT THERIN; THEREAFTER CUTTING OFF THE FLOW OF AIR THROUGH SAID INJECTION BOREHOLE; FEEDING AIR TO THE COM-
Claim 2
Dependent Claim
107 words
A PROCESS FOR PRODUCING AN OIL-BEARING FORMATION CONTAINING CRUDE OIL OF HIGH A.P.I. GRAVITY OF INSUFFICIENT CARBON RESIDUE TO PERMIT DRIVING A COMBUSTION FROM THRU SAID FORMATION WHICH COMPRISES ELECTRICALLY CARBONIZING OIL IN THE FORMATION AROUND AN INJECTION BOREHOLE THEREIN TO FORM A COKE DEPOSIT CAPABLE OF SUPPORTING COMBUSTION AND EXTENDING A DISTANCE FROM SAID BOREHOLE IN RANGE OF 3 TO 15 FEET; THEREAFTER INITIATING COMBUSTION OF THE COKE DEPOSIT BY CONTACTING SAID COKE WITH OXYGEN-CONTAINING GAS INJECTED THRU SAID INJECTION BOREHOLE UNDER COMBUSTION CONDITIONS TO ESTABLISH A COMBUSTION FRONT THERIN; THEREAFTER CUTTING OFF THE FLOW OF AIR THROUGH SAID INJECTION BOREHOLE; FEEDING AIR TO THE COM-
References Cited (Backward Citations)
US1372743A
Cited
US2497868A
Cited
US2584606A
Cited
US2685930A
Cited
US2642943A
Cited
US2795279A
Cited
US2793696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |