US3220474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin and/or aromatic miscible slug secondary recovery process
Assignee: Union Oil Company of California
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Filing: 1961-12-28
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Granted: 1965-11-30
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Le Roy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:32
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF RECOVERING PETROLEUM FROM SUBTERRANEAN RESERVOIRS PENETRATED BY AN INPUT WELL AND A PRODUCING WELL COMPRISING INJECTING THROUGH SAID INPUT WELL AND INTO SAID FORMATION 0.02 T/ 0.20 RESERVOIR PORE VOLUME OF LIQUID HYDROCARBON, AT LEAST 60% OF SAID LIUQID HYDROCARBON BEING OF THE GROUP CONSISTING OF C3 TO C10 OLEFINS, C6 TO C10 MONONUCLEAR AROMATICS AND MIXTURES THEREOF, THEN INJECTING 0.02 TO 0920 RESERVOIR PORE VOLUME OF A SOLVENT WHICH IS MISCIBLE WITH WATER, SOLUBLE IN SAID HYDROCARBON TO THE EXTENT OF AT LEAST 1 VOLUME OF SOLVENT PER VOLUME OF HYDROCARBON, AND DISPLAYS A PARTITION COEFFICIENT FAVORING SOLUTION IN SAID HYDROCARBON WHEN IN THE PRESENCE OF SAID HYDROCARBON AND WATER, INJECTING FLOODWATER TO DRIVE SAID HYDROCARBON AND SOLVENT TOWARD A PRODUCING WELL, AND RECOVERING PETROLEUM FROM SAID PRDUCING WELL.
Claim 2
Independent Claim
133 words
A METHOD OF RECOVERING PETROLEUM FROM SUBTERRANEAN RESERVOIRS PENETRATED BY AN INPUT WELL AND A PRODUCING WELL COMPRISING INJECTING THROUGH SAID INPUT WELL AND INTO SAID FORMATION 0.02 T/ 0.20 RESERVOIR PORE VOLUME OF LIQUID HYDROCARBON, AT LEAST 60% OF SAID LIUQID HYDROCARBON BEING OF THE GROUP CONSISTING OF C3 TO C10 OLEFINS, C6 TO C10 MONONUCLEAR AROMATICS AND MIXTURES THEREOF, THEN INJECTING 0.02 TO 0920 RESERVOIR PORE VOLUME OF A SOLVENT WHICH IS MISCIBLE WITH WATER, SOLUBLE IN SAID HYDROCARBON TO THE EXTENT OF AT LEAST 1 VOLUME OF SOLVENT PER VOLUME OF HYDROCARBON, AND DISPLAYS A PARTITION COEFFICIENT FAVORING SOLUTION IN SAID HYDROCARBON WHEN IN THE PRESENCE OF SAID HYDROCARBON AND WATER, INJECTING FLOODWATER TO DRIVE SAID HYDROCARBON AND SOLVENT TOWARD A PRODUCING WELL, AND RECOVERING PETROLEUM FROM SAID PRDUCING WELL.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |