Patent US3342462A successfully refreshed from Google Patents.
US3159976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing of porous and fissured formations with cationic asphalt emulsions
Assignee: Phillips Petroleum Co
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Filing: 1960-12-27
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Granted: 1964-12-08
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Carl T Brandt
- 👤 William R Bowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/506; E; E02; E02D; E02D3/00; E02D3/12; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A METHOD FOR DECREASING THE PERMEABILITY OF A POROUS FORMATION PENETRATED BY A BORE HOLE COMPRISING: INJECTING A CATIONIC ASPHALT EMULSION WHICH COMPRISES ABOUT 60-70 PARTS BY WEIGHT OF PARTICULATE ASPHALT, ABOUT 29-39 PARTS BY WEIGHT OF WATER, ABOUT 0.3-1.5 PARTS BY WEIGHT OF ACID ADDITION PRODUCT OF A CATION SURFACE-ACTIVE AGENT EMPLOYED AS AN EMULSIFIEER, AND ABOUT 0.1 TO 0.25 PART BY WEIGHT OF CALCIUM CHLORIDE INTO ONE AREA OF SAID FORMATION THROUGH A FIRST CONDIT DEPENDING WITHIN SAID BORE HOLE; CONCURRENTLY INJECTING AN AQUEOUS SOLUTION OF A METAL HYDROXIDE INTO SAID FORMATION THROUGH A SECOND CONDUIT DEPENDING WITHIN SAID BORE HOLE IN AN AMOUNT SUFFICIENT TO BREAK SAID EMULSION UPON CONTACT; AND CONTINUING SAID CONCURRENT INJECTION INTO SAID FORMATION UNTIL THE BACK PRESSURE ON SAID FIRST CONDUIT ACHIEVERS A PRESELECTED LEVEL, SAID LEVEL IS SUCH AS TO PRODUCE A FORMATION PRESSURE AT THE LEVEL OF GROUTING WHICH RANGES FROM 0.5 TO 1.5 POUNDS
Claim 2
Independent Claim
155 words
A METHOD FOR DECREASING THE PERMEABILITY OF A POROUS FORMATION PENETRATED BY A BORE HOLE COMPRISING: INJECTING A CATIONIC ASPHALT EMULSION WHICH COMPRISES ABOUT 60-70 PARTS BY WEIGHT OF PARTICULATE ASPHALT, ABOUT 29-39 PARTS BY WEIGHT OF WATER, ABOUT 0.3-1.5 PARTS BY WEIGHT OF ACID ADDITION PRODUCT OF A CATION SURFACE-ACTIVE AGENT EMPLOYED AS AN EMULSIFIEER, AND ABOUT 0.1 TO 0.25 PART BY WEIGHT OF CALCIUM CHLORIDE INTO ONE AREA OF SAID FORMATION THROUGH A FIRST CONDIT DEPENDING WITHIN SAID BORE HOLE; CONCURRENTLY INJECTING AN AQUEOUS SOLUTION OF A METAL HYDROXIDE INTO SAID FORMATION THROUGH A SECOND CONDUIT DEPENDING WITHIN SAID BORE HOLE IN AN AMOUNT SUFFICIENT TO BREAK SAID EMULSION UPON CONTACT; AND CONTINUING SAID CONCURRENT INJECTION INTO SAID FORMATION UNTIL THE BACK PRESSURE ON SAID FIRST CONDUIT ACHIEVERS A PRESELECTED LEVEL, SAID LEVEL IS SUCH AS TO PRODUCE A FORMATION PRESSURE AT THE LEVEL OF GROUTING WHICH RANGES FROM 0.5 TO 1.5 POUNDS
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |