US3004598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing the permeability of underground formations
Assignee: Gulf Research and Development Co
•
Filing: 1958-05-14
•
Granted: 1961-10-17
•
Expires: 1978-05-14
Abstract
No abstract record available.
Inventors
- 👤 Ramos Joe
- 👤 Wayne F Hower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:57
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/5045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR PLUGGING A PERMEABLE FORMATION PENETRATED BY A BOREHOLE OF A WELL FOR THE PRODUCTION BY HYDROCARBON FLUIDS COMPRISING DISPLACING DOWN THE BOREHOLE AND INJECTING INTO THE FORMATION AN AQUEOUS SOLUTION OF A METAL SALT, AND THEN DISPLACING DOWN THE BOREHOLE AND INJECTING INTO THE FORMATION A MIXTURE OF AN INERT GAS AND A REACTANT GAS THAT WILL REACT WITH THE METAL SALT TO FORM AN INSOLUBLE PRECIPITATE CONTAINING THE METAL ION OF THE SALT, THE PROPORTION OF INERT GAS BEING SUCH THAT THE MIXTURE OF GASES REMAINS IN THE GASEOUS STATE AT THE CONDITIONS EXISTING IN THE PERMEABLE FORMATION.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PLUGGING A PERMEABLE FORMATION PENETRATED BY A BOREHOLE OF A WELL FOR THE PRODUCTION BY HYDROCARBON FLUIDS COMPRISING DISPLACING DOWN THE BOREHOLE AND INJECTING INTO THE FORMATION AN AQUEOUS SOLUTION OF A METAL SALT, AND THEN DISPLACING DOWN THE BOREHOLE AND INJECTING INTO THE FORMATION A MIXTURE OF AN INERT GAS AND A REACTANT GAS THAT WILL REACT WITH THE METAL SALT TO FORM AN INSOLUBLE PRECIPITATE CONTAINING THE METAL ION OF THE SALT, THE PROPORTION OF INERT GAS BEING SUCH THAT THE MIXTURE OF GASES REMAINS IN THE GASEOUS STATE AT THE CONDITIONS EXISTING IN THE PERMEABLE FORMATION.
References Cited (Backward Citations)
US1421706A
Cited
US1815876A
Cited
US2029649A
Cited
US2272672A
Cited
US2361012A
Cited
US2837163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |