US2875832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous hydrocarbon and carbon dioxide solutions in hydrocarbons
Assignee: Oil Recovery Corp
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Filing: 1952-10-23
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Granted: 1959-03-03
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Expires: 1972-10-23
Abstract
No abstract record available.
Inventors
- 👤 James W Martin
- 👤 Frederick A Hessel
- 👤 Irving P Hammer
- 👤 John B Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A MOTHOD OF RECOVERING LIQUID HYDRCARBONS FROM A SUBTERRANEAN OIL FORMATION, THE STEPS IN INJECTING INTO SUCH FORMATION CARBON DIOXIDE AND A GAS, PREDOMINANTLY HYDROCARBON OF FROM 2 TO 4 CARBON ATOMS, THE PARTIAL PRESSURE OF THE GAS, PREDOMINANTLY HYDROCARBON, BEING WITHIN THE RANGE FROM ABOUT 150 TO ABOUT 500 P.S.I. THE RATIO OF PARTIAL PRESSURE OF CARBON DIOXIDE TO GAS, PREDOMINANTLY HYDROCARBON, BEING IN THE RANGE FROM ABOUT 2:1 TO ABOUT 1:1 CONTACTING AND LIQUID HYDROCARBONS WITH SAID GASES AT A TEMPERATURE OF THE ORDER OF 27 DEGREES C., AND WITHDRAWING FROM SAID FORMATION AN EFFLUENT COMPRISING LIQUID HYDROCARBONS AND SAID GASES.
Claim 2
Dependent Claim
104 words
IN A MOTHOD OF RECOVERING LIQUID HYDRCARBONS FROM A SUBTERRANEAN OIL FORMATION, THE STEPS IN INJECTING INTO SUCH FORMATION CARBON DIOXIDE AND A GAS, PREDOMINANTLY HYDROCARBON OF FROM 2 TO 4 CARBON ATOMS, THE PARTIAL PRESSURE OF THE GAS, PREDOMINANTLY HYDROCARBON, BEING WITHIN THE RANGE FROM ABOUT 150 TO ABOUT 500 P.S.I. THE RATIO OF PARTIAL PRESSURE OF CARBON DIOXIDE TO GAS, PREDOMINANTLY HYDROCARBON, BEING IN THE RANGE FROM ABOUT 2:1 TO ABOUT 1:1 CONTACTING AND LIQUID HYDROCARBONS WITH SAID GASES AT A TEMPERATURE OF THE ORDER OF 27 DEGREES C., AND WITHDRAWING FROM SAID FORMATION AN EFFLUENT COMPRISING LIQUID HYDROCARBONS AND SAID GASES.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |