US2950247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Increasing permeability of subsurface formations
Assignee: Atlantic Richfield Co
•
Filing: 1957-05-16
•
Granted: 1960-08-23
•
Expires: 1977-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Mcguire
- 👤 Loyd R Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:37
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267; Y; Y10; Y10S; Y10S507/00; Y10S507/906; Y10S507/922; Y10S507/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A METHOD OR INCREASING THE PERMEABILITY TO FLUIDS OF A SUBSURFACE EARTH FORMATION HAVING AT LEAST ONE FRACTURE EXTENDING FROM THE WALL OF A WELL BORE RADIALLY INTO THE FORMATION, THE IMPROVEMENT COMPRISING FORCING INTO SAID FRACTURE A FLUID SUSPENSION OF A MANUFACTURED, FORMABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINA AND ALUMINIUM PARTICLES OF GENERALLY SPHERICAL SHAPE AND MIXTURES THEREOF, SAID PARTICLES BEING CHARACTERIZED BY HAVING A DIAMETER IN EXCESS OF 0.03 INCH AND BEING CAPABLE OF SUPPORTING A LOAD ABOVE 40 POUNDS PER PARTICLE WITHOUT FRAGMENTATION.
Claim 2
Dependent Claim
90 words
IN A METHOD OR INCREASING THE PERMEABILITY TO FLUIDS OF A SUBSURFACE EARTH FORMATION HAVING AT LEAST ONE FRACTURE EXTENDING FROM THE WALL OF A WELL BORE RADIALLY INTO THE FORMATION, THE IMPROVEMENT COMPRISING FORCING INTO SAID FRACTURE A FLUID SUSPENSION OF A MANUFACTURED, FORMABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINA AND ALUMINIUM PARTICLES OF GENERALLY SPHERICAL SHAPE AND MIXTURES THEREOF, SAID PARTICLES BEING CHARACTERIZED BY HAVING A DIAMETER IN EXCESS OF 0.03 INCH AND BEING CAPABLE OF SUPPORTING A LOAD ABOVE 40 POUNDS PER PARTICLE WITHOUT FRAGMENTATION.
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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |