US2953204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering method and apparatus for water flooding process
Assignee: Shell USA Inc
•
Filing: 1957-07-23
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Granted: 1960-09-20
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Todd M Doscher
- 👤 Jack G Yarbrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:56
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/08; E21B23/10; E21B43/00; E21B43/02; E21B43/04; E21B43/08; E21B43/16; E21B43/20; E21B43/34; E21B43/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF RECOVERING OIL FROM AN UNDERGROUND FORMATION HAVING IN COMMUNICATION THEREWITH AT LEAST ONE INJECTION WELL AND ONE PRODUCTION WELL, SAID METHOD COMPRISING THE STEPS OF INJECTING A FLUID UNDER PRESSURE INTO AN INJECTION WELL THROUGH A TUBING STRING DEPENDING WITHIN SAID WELL, FILTERING ANY PARTICLES OF MATTER FROM SAID INJECTION FLUID INCLUDING PARTICLES PICKED UP BY PASSAGE OF THE FLUID THROUGH SAID TUBING STRING, SAID FILTERING TAKING PLACE SUBSTANTIALLY AT BUT PRIOR TO THE POINT OF DISCHARGE FROM SAID TUBING STRING, AND MAINTIANING PRESSURE ON SAID INJECTION FLUID TO FORCE IT THROUGH AN OIL-BEARING FORMATION IN SAID INJECTION WELL TO SAID PRODUCTION WELL.
Claim 2
Independent Claim
106 words
A METHOD OF RECOVERING OIL FROM AN UNDERGROUND FORMATION HAVING IN COMMUNICATION THEREWITH AT LEAST ONE INJECTION WELL AND ONE PRODUCTION WELL, SAID METHOD COMPRISING THE STEPS OF INJECTING A FLUID UNDER PRESSURE INTO AN INJECTION WELL THROUGH A TUBING STRING DEPENDING WITHIN SAID WELL, FILTERING ANY PARTICLES OF MATTER FROM SAID INJECTION FLUID INCLUDING PARTICLES PICKED UP BY PASSAGE OF THE FLUID THROUGH SAID TUBING STRING, SAID FILTERING TAKING PLACE SUBSTANTIALLY AT BUT PRIOR TO THE POINT OF DISCHARGE FROM SAID TUBING STRING, AND MAINTIANING PRESSURE ON SAID INJECTION FLUID TO FORCE IT THROUGH AN OIL-BEARING FORMATION IN SAID INJECTION WELL TO SAID PRODUCTION WELL.
References Cited (Backward Citations)
US389164A
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US2138057A
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US2163933A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |