US3127934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent injection petroleum recovery method
Assignee: Pure Oil Co
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Filing: 1961-05-18
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Granted: 1964-04-07
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Albert K Csaszar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:56
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE METHOD OF RECOVERING PETROLEUM FROM SUBTERRANEAN RESERVOIRS, CONTAINING PETROLEUM AND WATER, PENETRATED BY AN INJECTION WELL AND A PRODUCING WELL, COMPRISING INJECTING THROUGH SAID INJECTION WELL AND INTO SAID FORMATION A QUANTITY OF LIGHT ANHYDROUS LIQUID SOLVENT HAVING A HIGH SOLUBILITY IN CRUDE OIL, SAID QUANTITY BEING IN THE RANGE OF ONE-THIRD TO ONE-HALF THE VOLUME OF SOLVENT WHICH, IF INJECTED, WOULD CAUSE SOLVENT BREAKTHROUGH AT THE PRODUCING WELL, NEXT FOLLOWING THE INJECTION OF SAID
Claim 2
Independent Claim
76 words
THE METHOD OF RECOVERING PETROLEUM FROM SUBTERRANEAN RESERVOIRS, CONTAINING PETROLEUM AND WATER, PENETRATED BY AN INJECTION WELL AND A PRODUCING WELL, COMPRISING INJECTING THROUGH SAID INJECTION WELL AND INTO SAID FORMATION A QUANTITY OF LIGHT ANHYDROUS LIQUID SOLVENT HAVING A HIGH SOLUBILITY IN CRUDE OIL, SAID QUANTITY BEING IN THE RANGE OF ONE-THIRD TO ONE-HALF THE VOLUME OF SOLVENT WHICH, IF INJECTED, WOULD CAUSE SOLVENT BREAKTHROUGH AT THE PRODUCING WELL, NEXT FOLLOWING THE INJECTION OF SAID
References Cited (Backward Citations)
US2669306A
Cited
US2808886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |