US2807324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing oil recovery
Assignee: Cities Service Research and Development Co
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Filing: 1956-01-24
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Granted: 1957-09-24
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Expires: 1976-01-24
Abstract
No abstract record available.
Inventors
- 👤 Jack A King
- 👤 Wayne S Fallgatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:34
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/607; C09K8/50; C09K8/504; C09K8/5045; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF SELECTIVELY ADJUSTING PERMEABILITY OF A FORMATION TO INCREASE OIL RECOVERY THEREFORM WHICH COMPRISING INTRODUCING INTO THE FORMATION TWO AQUEOUS SOLUTIONS, SAID SOLUTIONS BEING OIL INSOLUBLE AND CAPABLE OF PRODUCING ON MIXING IN THE FORMATION A DOUBLE DECOMPOSITION REACTION SO AS TO SIMULTANEOUSLY PRODUCE A DOUBLE PERMEABILITY ADJUSTING PRECIPITATE, SAID SOLUTIONS BEING A METAL SULFATE SOLUTION AND AN ALKALI METAL SILICATE SOLUTION, CONTROLLING THE AREA AND POSITION OF THE DOUBLE PRECIPITATE BY SEPARATING SAID SOLUTIONS DURING THEIR INTRODUCTION AND PASSAGE THROUGH THE FORMATION BY MEANS OF A SPACING MEDIUM, THE AMOUNT OF SAID SPACING MEDIUM BEING DETERMINED ACCORDING TO THE EQUATION OF V=2N RWHPS, WHEREIN R=DISTANCE IN FEET FROM THE WELL BORE AT WHICH THE REACTION IS TO START; W=WIDTH IN FEET OF SPACER LIQUID BAND DESIRED AT DISTANCE R;H=THICKNESS IN FEET OF THE ZONE BEING TREATED; P=POROSITY OF THE FORMATION; AND S=AVERAGE WATER SATURATION UP TO THE POINT WHERE THE REACTION IS TO START.
Claim 2
Independent Claim
157 words
THE METHOD OF SELECTIVELY ADJUSTING PERMEABILITY OF A FORMATION TO INCREASE OIL RECOVERY THEREFORM WHICH COMPRISING INTRODUCING INTO THE FORMATION TWO AQUEOUS SOLUTIONS, SAID SOLUTIONS BEING OIL INSOLUBLE AND CAPABLE OF PRODUCING ON MIXING IN THE FORMATION A DOUBLE DECOMPOSITION REACTION SO AS TO SIMULTANEOUSLY PRODUCE A DOUBLE PERMEABILITY ADJUSTING PRECIPITATE, SAID SOLUTIONS BEING A METAL SULFATE SOLUTION AND AN ALKALI METAL SILICATE SOLUTION, CONTROLLING THE AREA AND POSITION OF THE DOUBLE PRECIPITATE BY SEPARATING SAID SOLUTIONS DURING THEIR INTRODUCTION AND PASSAGE THROUGH THE FORMATION BY MEANS OF A SPACING MEDIUM, THE AMOUNT OF SAID SPACING MEDIUM BEING DETERMINED ACCORDING TO THE EQUATION OF V=2N RWHPS, WHEREIN R=DISTANCE IN FEET FROM THE WELL BORE AT WHICH THE REACTION IS TO START; W=WIDTH IN FEET OF SPACER LIQUID BAND DESIRED AT DISTANCE R;H=THICKNESS IN FEET OF THE ZONE BEING TREATED; P=POROSITY OF THE FORMATION; AND S=AVERAGE WATER SATURATION UP TO THE POINT WHERE THE REACTION IS TO START.
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |