Patent US3016352A successfully refreshed from Google Patents.
US3016352A
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Process for improving injectivity in secondary oil recovery
Assignee: GAF Chemicals Corp
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Filing: 1959-10-30
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Granted: 1962-01-09
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Hessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:26
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE SECONDARY RECOVERY OF PETROLEUM FROM AN UNDERGROUND FORMATION BY THE WATER FLOODING METHOD WHEREIN WATER IS INJECTED THROUGH AN INPUT WELL INTO AN UNDERGROUND OIL BEARING FORMTION TO FORCE THE OIL THROUGH THE FORMATION TOWARD AN OUTPUT WELL FROM WHICH OIL IS WITHDRAWN, THE STEP OF INCREASING THE INJECTIVITY OF FLOOD WATER INTO AN INPUT WELL WHICH COMPRISES INTRODUCING THROUGH THE INPUT WELL INTO THE ADJACENT FORMATION A WATER MISCIBLE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
76 words
IN THE SECONDARY RECOVERY OF PETROLEUM FROM AN UNDERGROUND FORMATION BY THE WATER FLOODING METHOD WHEREIN WATER IS INJECTED THROUGH AN INPUT WELL INTO AN UNDERGROUND OIL BEARING FORMTION TO FORCE THE OIL THROUGH THE FORMATION TOWARD AN OUTPUT WELL FROM WHICH OIL IS WITHDRAWN, THE STEP OF INCREASING THE INJECTIVITY OF FLOOD WATER INTO AN INPUT WELL WHICH COMPRISES INTRODUCING THROUGH THE INPUT WELL INTO THE ADJACENT FORMATION A WATER MISCIBLE COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2262428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |