US3240272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of waterflood residual oil
Assignee: Jersey Production Research Co
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Filing: 1962-03-16
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Granted: 1966-03-15
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Expires: 1982-03-16
Abstract
No abstract record available.
Inventors
- 👤 Orkiszewski Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:26
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR RECOVERING OIL FROM A SUBTERRANEAN OILBEARING RESERVOIR PENETRATED BY TWO LATERALLY SPACED WELLS, WHICH COMPRISES INJECTING A BANK OF SOLVENT THROUGH ONE OF SAID WELLS INTO SAID RESERVOIR, FOLLOWING SAID SOLVENT WITH THE INJECTION OF A SCAVENGING AND PROPELLING FLUID, AND WITHDRAWING OIL FROM THE OTHER OF SAID WELLS, SAID SOLVENT CONSISTING ESSENTIALLY OF A BLEND OF LIQUID PROPANE AND A HIGHLY VISCOUS DISTILLATE OIL, SAID DISTILLATE OIL HAVING
Claim 2
Dependent Claim
72 words
A PROCESS FOR RECOVERING OIL FROM A SUBTERRANEAN OILBEARING RESERVOIR PENETRATED BY TWO LATERALLY SPACED WELLS, WHICH COMPRISES INJECTING A BANK OF SOLVENT THROUGH ONE OF SAID WELLS INTO SAID RESERVOIR, FOLLOWING SAID SOLVENT WITH THE INJECTION OF A SCAVENGING AND PROPELLING FLUID, AND WITHDRAWING OIL FROM THE OTHER OF SAID WELLS, SAID SOLVENT CONSISTING ESSENTIALLY OF A BLEND OF LIQUID PROPANE AND A HIGHLY VISCOUS DISTILLATE OIL, SAID DISTILLATE OIL HAVING
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |