US3064732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing formation permeability
Assignee: Pure Oil Co
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Filing: 1959-11-16
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Granted: 1962-11-20
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
- 👤 Orrin C Holbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF INCREASING THE WATER PERMEABILITY OF A SUBSTERRANEAN FORMATION SURROUNDING A WATER-INJECTION WELL COMPRISING THE STEPS OF INJECTING THROUGH SAID WELL AND INTO SAID FORMATION A LIQUID CONSISITING OF NOT LESS THAN 80% METHANOL BY VOLUME, THE REMAINDER BEING WATER, THE AMOUNT OF SAID LIQUID INJECTED BEING 0.1 TO 10 TIMES THE PORE VOLUME OF THE FORMATION ZONE EXTENDING FOR A RADIUS OF ABOUT 3 TO 10 FEET AROUND THE WELL, AND THEREAFTER INJECTING WATER THROUGH SAID WELL AND INTO SAID FORMATION.
Claim 2
Independent Claim
84 words
A METHOD OF INCREASING THE WATER PERMEABILITY OF A SUBSTERRANEAN FORMATION SURROUNDING A WATER-INJECTION WELL COMPRISING THE STEPS OF INJECTING THROUGH SAID WELL AND INTO SAID FORMATION A LIQUID CONSISITING OF NOT LESS THAN 80% METHANOL BY VOLUME, THE REMAINDER BEING WATER, THE AMOUNT OF SAID LIQUID INJECTED BEING 0.1 TO 10 TIMES THE PORE VOLUME OF THE FORMATION ZONE EXTENDING FOR A RADIUS OF ABOUT 3 TO 10 FEET AROUND THE WELL, AND THEREAFTER INJECTING WATER THROUGH SAID WELL AND INTO SAID FORMATION.
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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |