US3044550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating earth formations which are penetrated by a well bore
Assignee: Dow Chemical Co
•
Filing: 1957-12-26
•
Granted: 1962-07-17
•
Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Louis H Eilers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/261; E21B33/00; E21B33/10; E21B33/13; E21B33/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF TREATING AN EARTH FORMATION PENETRATED BY A WELL BORE, COMPRISING INJECTING A PUMPABLE TREATING AGENT INTO SAID EARTH FORMATION TO FRACTURE SAID FORMATION AND MAKE FLUID RECEIVING PASSAGES THEREIN, THEN INJECTING INTO SAID FLUID RECEIVING PASSAGES AN AQUEOUS HYDRAULIC CEMENT SLURRY TO FORM A CEMENT FILTER CAKE AGAINST THE WALL SURFACES OF THE PASSAGES TOUCHED BY SAID SLURRY, AND THEN PUMPING A STREAM OF TREATING AGENT IN EXCESS OF THE AMOUNT CAPABLE OF FILTERING THROUGH SAID FILTER CAKE THROUGH SAID FILTER CAKE BEFORE SAID FILTER CAKE HARDENS ACROSS THE ENTIRE CROSS-SECTIONAL CONFIGURATION OF SAID PASSAGES TO DISPLACE UNFILTERED SLURRY FURTHER ALONG SAID PASSAGES.
Claim 2
Independent Claim
106 words
A METHOD OF TREATING AN EARTH FORMATION PENETRATED BY A WELL BORE, COMPRISING INJECTING A PUMPABLE TREATING AGENT INTO SAID EARTH FORMATION TO FRACTURE SAID FORMATION AND MAKE FLUID RECEIVING PASSAGES THEREIN, THEN INJECTING INTO SAID FLUID RECEIVING PASSAGES AN AQUEOUS HYDRAULIC CEMENT SLURRY TO FORM A CEMENT FILTER CAKE AGAINST THE WALL SURFACES OF THE PASSAGES TOUCHED BY SAID SLURRY, AND THEN PUMPING A STREAM OF TREATING AGENT IN EXCESS OF THE AMOUNT CAPABLE OF FILTERING THROUGH SAID FILTER CAKE THROUGH SAID FILTER CAKE BEFORE SAID FILTER CAKE HARDENS ACROSS THE ENTIRE CROSS-SECTIONAL CONFIGURATION OF SAID PASSAGES TO DISPLACE UNFILTERED SLURRY FURTHER ALONG SAID PASSAGES.
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) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |