US3113618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery technique
Assignee: Monsanto Chemicals Ltd
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Filing: 1962-09-26
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Granted: 1963-12-10
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Expires: 1982-09-26
Abstract
No abstract record available.
Inventors
- 👤 David T Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:40
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A SECONDARY RECOVERY METHOD OF RECOVERING OIL FROM A MULTI-WELL OIL-BEARING RESERVOIR IN WHICH AN INJECTION FLUID IS INJECTED INTO A PLURALITY OF INJECTION WELLS, EACH INJECTION WELL BEING SURROUNDED BY A PLURALITY OF PRODUCING WELLS ADJACENT THERETO FROM WHICH OIL IS WITHDRAWN, THE IMPROVEMENT COMPRISING INITIATING INJECTION OF SAID FLUID INTO ALTERNATE PRODUCING WELLS ADJACENT TO SAID INJECTION NORMALLY NECESSARY TO CAUSE A BREAKTHROUGH OF FLUID INTO THE PRODUCING WELLS HAS BEEN INJECTED INTO THE RESERVOIR, THE RATIO OF FLUID INJECTED INTO THE ALTERNATE PRODUCING WELLS AND THAT INJECTED INTO THE INITIAL INJECTION WELLS BEING MAINTAINED WITHIN THE RANGE OF 3:1 TO
Claim 2
Dependent Claim
104 words
IN A SECONDARY RECOVERY METHOD OF RECOVERING OIL FROM A MULTI-WELL OIL-BEARING RESERVOIR IN WHICH AN INJECTION FLUID IS INJECTED INTO A PLURALITY OF INJECTION WELLS, EACH INJECTION WELL BEING SURROUNDED BY A PLURALITY OF PRODUCING WELLS ADJACENT THERETO FROM WHICH OIL IS WITHDRAWN, THE IMPROVEMENT COMPRISING INITIATING INJECTION OF SAID FLUID INTO ALTERNATE PRODUCING WELLS ADJACENT TO SAID INJECTION NORMALLY NECESSARY TO CAUSE A BREAKTHROUGH OF FLUID INTO THE PRODUCING WELLS HAS BEEN INJECTED INTO THE RESERVOIR, THE RATIO OF FLUID INJECTED INTO THE ALTERNATE PRODUCING WELLS AND THAT INJECTED INTO THE INITIAL INJECTION WELLS BEING MAINTAINED WITHIN THE RANGE OF 3:1 TO
References Cited (Backward Citations)
US2347778A
Cited
US2885002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |