US3246694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water flooding process for the recovery of oil
Assignee: Gulf Research and Development Co
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Filing: 1963-01-17
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Granted: 1966-04-19
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Taber
- 👤 Malcolm R J Wyllie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:44
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF RECOVERING RESERVOIR OIL FROM A SUBSURFACE OIL-BEARING FORMATION COMPRISING INJECTING INTO SAID FORMATION AT AN INPUT WELL A SLUG OF OIL MISCIBLE WITH THE RESERVOIR OIL, SAID SLUG BEING SUBSTANTIALLY DEVOID OF WATER AND CONTAINING AN OIL-SOLUBLE SURFACTANT DISSOLVED THEREIN, SAID INJECTED OIL HAVING A VISCOSITY AT LEAST AS HIGH AS THE VISCOSITY OF THE RESERVOIR OIL, THEREAFTER INJECTING INTO SAID FORMATION AT THE INPUT WELL AN AQUEOUS LIQUID TO DRIVE THE INJECTED OIL AND RESERVOIR OIL THROUGH THE FORMATION TOWARD A PRODUCTION WELL SPACED FROM THE INPUT WELL, AND RECOVERING RESERVOIR OIL FROM SAID FORMATION AT THE PRODUCTION WELL.
Claim 2
Independent Claim
103 words
A METHOD OF RECOVERING RESERVOIR OIL FROM A SUBSURFACE OIL-BEARING FORMATION COMPRISING INJECTING INTO SAID FORMATION AT AN INPUT WELL A SLUG OF OIL MISCIBLE WITH THE RESERVOIR OIL, SAID SLUG BEING SUBSTANTIALLY DEVOID OF WATER AND CONTAINING AN OIL-SOLUBLE SURFACTANT DISSOLVED THEREIN, SAID INJECTED OIL HAVING A VISCOSITY AT LEAST AS HIGH AS THE VISCOSITY OF THE RESERVOIR OIL, THEREAFTER INJECTING INTO SAID FORMATION AT THE INPUT WELL AN AQUEOUS LIQUID TO DRIVE THE INJECTED OIL AND RESERVOIR OIL THROUGH THE FORMATION TOWARD A PRODUCTION WELL SPACED FROM THE INPUT WELL, AND RECOVERING RESERVOIR OIL FROM SAID FORMATION AT THE PRODUCTION 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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |