US2860854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for drilling and completing wells
Assignee: Individual
•
Filing: 1955-09-01
•
Granted: 1958-11-18
•
Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Roy F Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:22
CPC Classifications
E; E21; E21B; E21B27/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A METHOD OF COMPLETING A WATER WELL IN A LOOSE SANDED FORMATION, COMPRISING THE STEPS OF DRILLING AN OPEN HOLE INTO A LOOSE SANDED FORMATION BELOW THE ADJACENT GROUND WATER LEVEL OF SAID FORMATION, MAINTAINING DURING SAID STEP OF DRILLING A FLUID LEVEL IN THE HOLE ABOVE SAID GROUND WATER LEVEL BY INTRODUCING FLUID INTO SAID HOLE AS REQUIRED, THEREAFTER PROGRESSIVELY LOWERING THE FLUID LEVEL IN THE HOLE UNTIL IT FALLS BELOW THE GROUND WATER LEVEL AND A CAVE-IN OCCURS, THEN PREVENTING ENLARGING OF THE CAVE-IN BY AGAIN INTRODUCING FLUID INTO THE HOLE AND RAISING THE FLUID LEVEL ABOVE SAID GROUND WATER LEVEL AND THEREAFTER DRILLING THE HOLE TO COMPLETION.
References Cited (Backward Citations)
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US1117424A
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US1455010A
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US1572274A
Cited
US2602516A
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US2721059A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |