US3000442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fracture treatment of earth formations
Assignee: UNITED CHEMICAL CORP OF NEW ME
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Filing: 1957-06-06
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Granted: 1961-09-19
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Gambill Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:40
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
THE METHOD OF FRACTURE TREATING EARTH FORMATIONS WHICH COMPRISES, INJECTING INTO SUCH FORMATIONS UNDER HIGH PRESSURE SUFFICIENT TO INDUCE FRACTURE OF SAID FORMATIONS A FLUID COMPOSITION CHARACTERIZED BY ITS CONTAINING ABOUT 5 TO ABOUT 50 PARTS BY WEIGHT OF SOLID SODIUM CHLORIDE SUSPENDED PER 50 PARTS OF FLUID, SAID FLUID ALSO CARRYING IN SOLUTION A COMPOSITION CONSISTING ESSENTIALLY OF ALKALI METAL POLYPHOSPHATE, POLYAMINO POLYCARBOXYLIC ACID CHELATING AGENT AND POLYGLYCOSIDE IN THE WEIGHT RATIO OF ABOUT 1:1:1 TO 10:1:1, MAINTAINING SAID PRESSURE FOR A PREDETERMINED INTERVAL OF TIME, AND, THEREAFTER, RELEASING SAID PRESSURE.
References Cited (Backward Citations)
US2667224A
Cited
US2852077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |