US3075918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery of petroleum
Assignee: Pure Oil Co
•
Filing: 1958-12-08
•
Granted: 1963-01-29
•
Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 Le Roy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; E; E21; E21B; E21B43/00; E21B43/16; E21B43/164; Y; Y10; Y10S; Y10S507/00; Y10S507/904; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A PROCESS FOR THE PRODUCTION OF A SOLUTION FOR IN JECTION INTO A SUBSTERRANEAN RESERVOIR, SAID SOLUTION CONSISTING ESSENTIALLY OF CARBON DIOXIDE AND OIL, COMPRISES BURING A HYDROCARBON IN AIR, COOLING AND COMPRESSING THE COMBUSTION PRODUCTS AND SELECTIVELY ABSORBING CARBON DIOXIDE FROM SAID PRODUCTS IN A HYDROCARBON OIL PREFERENTIALLY ABSORBENT FOR CARBON DIOXIDE, FLASHING OFF CARBON DIOXIDE FROM SAID HYDROCARBON OIL UNDER CONDITIONS TO INCLUDING A SUBSTANTIAL AMOUNT OF SAID HYDROCARBON OIL IN THE CARBON DIOXIDE, AND RECYCLING THE REMAINING HYDROCARBON OIL TO AGAIN ABSORB CARRBON DIOXIDE FROM FRESH COBUSTION PRODUCTS, SAID CARBON DIOXIDE AND INCLUDING HYDROCARBON OIL BEING FLASHED AT A PRESSURE IN EXCESS OF THE PRESSURE IN THE SAID RESERVOIR.
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |