US3176769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consolidation of incompetent earth formations
Assignee: California Research LLC
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Filing: 1964-08-25
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Granted: 1965-04-06
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Expires: 1984-08-25
Abstract
No abstract record available.
Inventors
- 👤 Barney R Treadway
- 👤 Joseph F Chittum
- 👤 Jr Phillip H Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:24
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
PROCESS FOR THE CEMENTING TOGETHER, IN A PERMEABLE AGGREGATE, OF LOOSE EARTH PARTICLES CONTAINED IN AN INCOMPETENT FORMATION ADJACENT TO A BOREHOLE FOR THE RECOVERY OF FLUID, WHICH COMPRISES PRE-FLUSHING THE FORMATION WITH A WATER-REMOVING LIQUID TO RENDER THE FORMATION PREFERENTIALLY WETTABLE BY THE CEMENTING AGENT, IMPREGNATING THE FLUSHED FORMATION WITH A LIQUID RESINOUS MIXTURE OF AN EPOXY RESIN AND A POLYCARBOXYLIC ACID ANHYDRIDE COPOLYMERIZABLE THEREWITH TO THE INFUSIBLE INSOLUBLE STATE, FLUSHING THE IMPREGNATED FORMATION WITH AN INERT LIQUID TO PROVIDE PERMEABILITY TO THE FORMATION AND LEAVE A FILM OF THE RESINOUS MIXTURE AROUND THE EARTH PARTICLES, THEN CONTACTING SAID FILM WITH AN EPOXY RESIN AMINE CURING AGENT, SAID EPOXY RESIN HAVING MORE THAN TWO EPOXY GROUPS IN PRIMARY POSITION PER MOLECULE, AND SAID RESINOUS MIXTURE HAVING A VISCOSITY IN THE RANGE 50 TO 500 CENTIPOISES AT 150*F.
Claim 2
Dependent Claim
138 words
PROCESS FOR THE CEMENTING TOGETHER, IN A PERMEABLE AGGREGATE, OF LOOSE EARTH PARTICLES CONTAINED IN AN INCOMPETENT FORMATION ADJACENT TO A BOREHOLE FOR THE RECOVERY OF FLUID, WHICH COMPRISES PRE-FLUSHING THE FORMATION WITH A WATER-REMOVING LIQUID TO RENDER THE FORMATION PREFERENTIALLY WETTABLE BY THE CEMENTING AGENT, IMPREGNATING THE FLUSHED FORMATION WITH A LIQUID RESINOUS MIXTURE OF AN EPOXY RESIN AND A POLYCARBOXYLIC ACID ANHYDRIDE COPOLYMERIZABLE THEREWITH TO THE INFUSIBLE INSOLUBLE STATE, FLUSHING THE IMPREGNATED FORMATION WITH AN INERT LIQUID TO PROVIDE PERMEABILITY TO THE FORMATION AND LEAVE A FILM OF THE RESINOUS MIXTURE AROUND THE EARTH PARTICLES, THEN CONTACTING SAID FILM WITH AN EPOXY RESIN AMINE CURING AGENT, SAID EPOXY RESIN HAVING MORE THAN TWO EPOXY GROUPS IN PRIMARY POSITION PER MOLECULE, AND SAID RESINOUS MIXTURE HAVING A VISCOSITY IN THE RANGE 50 TO 500 CENTIPOISES AT 150*F.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |