US3135325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water flooding technique
Assignee: Phillips Petroleum Co
•
Filing: 1959-12-18
•
Granted: 1964-06-02
•
Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:09
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
THE METHOD OF SUBSTANTIALLY REDUCING THE CONCENTRATION OF FILM AND PRECIPITATE FORMING MATERIALS IN CRUDE OIL WHICH IS TO BE USED AS A SLUG BETWEEN CRUDE OIL IN FORMATION AND INJECTED WATER IN A WATER FLOOD SYSTEM, SAID METHOD COMPRISING CONTACTING SAID CRUDE OIL WITH AN AQUEOUS SOLUTION SELECTED FROM THE GROUP CONSISTING OF A DILUTE ALKALI METAL HYDROXIDE, A DILUTE MINERAL ACID, A DILUTE LOWER CARBOXYLIC ACID AND WATER, THEREBY PREFERENTIALLY CONCENTRATING A SUBSTANTIALLY PART OF SAID MATERIALS AT THE OIL-WATER INTERFACE, SEPARATING THE TREATED CRUDE OIL FROM SAID MATERIALS SUSPENDED AT SAID INTERFACE, RECOVERING SAID TREATED CRUDE OIL FROM A SEPARATION ZONE, INJECTING A SLUG OF SAID TREATED OIL INTO SAID FORMATION PRIOR TO THE INJECTION OF WATER, AND THEN INJECTING WATER INTO SAID FORMATION BEHIND SAID TREATED CRUDE OIL, WHEREBY SAID INJECTING WATER DISPLACES SAID OIL IN SAID FORMATION WITH GREATER EFFICIENCY AND RESULTS IN INCREASED RECOVERY OF OIL AND IMPROVED WATER PERMEABILITY OF SAID FORMATION.
Claim 2
Independent Claim
159 words
THE METHOD OF SUBSTANTIALLY REDUCING THE CONCENTRATION OF FILM AND PRECIPITATE FORMING MATERIALS IN CRUDE OIL WHICH IS TO BE USED AS A SLUG BETWEEN CRUDE OIL IN FORMATION AND INJECTED WATER IN A WATER FLOOD SYSTEM, SAID METHOD COMPRISING CONTACTING SAID CRUDE OIL WITH AN AQUEOUS SOLUTION SELECTED FROM THE GROUP CONSISTING OF A DILUTE ALKALI METAL HYDROXIDE, A DILUTE MINERAL ACID, A DILUTE LOWER CARBOXYLIC ACID AND WATER, THEREBY PREFERENTIALLY CONCENTRATING A SUBSTANTIALLY PART OF SAID MATERIALS AT THE OIL-WATER INTERFACE, SEPARATING THE TREATED CRUDE OIL FROM SAID MATERIALS SUSPENDED AT SAID INTERFACE, RECOVERING SAID TREATED CRUDE OIL FROM A SEPARATION ZONE, INJECTING A SLUG OF SAID TREATED OIL INTO SAID FORMATION PRIOR TO THE INJECTION OF WATER, AND THEN INJECTING WATER INTO SAID FORMATION BEHIND SAID TREATED CRUDE OIL, WHEREBY SAID INJECTING WATER DISPLACES SAID OIL IN SAID FORMATION WITH GREATER EFFICIENCY AND RESULTS IN INCREASED RECOVERY OF OIL AND IMPROVED WATER PERMEABILITY OF SAID FORMATION.
References Cited (Backward Citations)
US840381A
Cited
US2131525A
Cited
US2308001A
Cited
US2165703A
Cited
US2249746A
Cited
US2457959A
Cited
US2531547A
Cited
US2669306A
Cited
US2669307A
Cited
US2798556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |