US3065790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery process
Assignee: Pure Oil Co
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Filing: 1957-11-22
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Granted: 1962-11-27
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Expires: 1977-11-22
Abstract
No abstract record available.
Inventors
- 👤 Le Roy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR PRODUCING A PETROLEUM OIL FROM AN OIL-BEARING VUGGY LIMESTONE ROCK RESERVIOR TRAVERSED BY AN INJECTION WELL AND A PRODUCING WELL WHICH COMPRISES INJECTING INTO SAID RESERVOIR THROUGH SAID INJECTION WELL 500 TO 3500 S.C.F. OF CO2 PER BARREL OF SAID OIL IN PLACE, TO PROVIDE AN ELEVATED PRESSURE NOT LESS THAN ABOUT 700 P.S.I. IN SAID RESERVOIR, THROUGH SAID INJECTION WELL; MAIN TAINING THE RESERVOIR AT THE ELEVATED PRESSURE; INJECTING AN AQUEOUS DRIVE FLUID INTO SAID RESERVOIR THROUGH SAID INJECTION WELL AT SAID ELEVATED PRESSURE UNTIL BREAKTHROUGH OF SAID DRIVE FLUID OCCOURS AT SAID PRODUCING WELL; AND THEN SHUTTING IN SAID INJECTION WELL AND PRODUCING PETRO-
Claim 2
Dependent Claim
109 words
A PROCESS FOR PRODUCING A PETROLEUM OIL FROM AN OIL-BEARING VUGGY LIMESTONE ROCK RESERVIOR TRAVERSED BY AN INJECTION WELL AND A PRODUCING WELL WHICH COMPRISES INJECTING INTO SAID RESERVOIR THROUGH SAID INJECTION WELL 500 TO 3500 S.C.F. OF CO2 PER BARREL OF SAID OIL IN PLACE, TO PROVIDE AN ELEVATED PRESSURE NOT LESS THAN ABOUT 700 P.S.I. IN SAID RESERVOIR, THROUGH SAID INJECTION WELL; MAIN TAINING THE RESERVOIR AT THE ELEVATED PRESSURE; INJECTING AN AQUEOUS DRIVE FLUID INTO SAID RESERVOIR THROUGH SAID INJECTION WELL AT SAID ELEVATED PRESSURE UNTIL BREAKTHROUGH OF SAID DRIVE FLUID OCCOURS AT SAID PRODUCING WELL; AND THEN SHUTTING IN SAID INJECTION WELL AND PRODUCING PETRO-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |