Patent US3687368A successfully refreshed from Google Patents.
Patent US2889884A successfully refreshed from Google Patents.
US2889884A
Expired / Lapsed
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Process for increasing permeability of oil bearing formation
Assignee: Gulf Research and Development Co
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Filing: 1956-10-12
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Granted: 1959-06-09
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Expires: 1976-10-12
Abstract
No abstract record available.
Inventors
- 👤 James H Henderson
- 👤 Joseph J Taber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:00
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/32; C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/845; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR INCREASING THE PERMEABILITY OF OIL PRODUCING FORMATIONS CONTAINING WATER COMPRISING PUMPING A SOLUTION OF A METAL HYDRIDE INTO THE FORMATION WHEREBY THE METAL HYDRIDE REACTS WITH WATER IN THE FORMATION TO LIBERATE HYDROGEN IN THE FORMATION AND GENERATE A HIGH PRESSURE THEREIN, MAINTAINING PRESSURE ON THE FORMATION WHILE THE METAL HYDRIDE REACTS WITH THE WATER, AND
Claim 2
Dependent Claim
59 words
A PROCESS FOR INCREASING THE PERMEABILITY OF OIL PRODUCING FORMATIONS CONTAINING WATER COMPRISING PUMPING A SOLUTION OF A METAL HYDRIDE INTO THE FORMATION WHEREBY THE METAL HYDRIDE REACTS WITH WATER IN THE FORMATION TO LIBERATE HYDROGEN IN THE FORMATION AND GENERATE A HIGH PRESSURE THEREIN, MAINTAINING PRESSURE ON THE FORMATION WHILE THE METAL HYDRIDE REACTS WITH THE WATER, AND
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) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |