Patent US3556597A successfully refreshed from Google Patents.
US3556597A
Expired / Lapsed
US
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Telescopic washdown liner and method of solution mining
Assignee: Kalium Chemicals Ltd
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Filing: 1969-02-17
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Granted: 1971-01-19
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Expires: 1989-02-17
Abstract
Abstract A LINER ASSEMBLY ATTACHED TO A DRILL STRING IS DESCRIBED WHICH PERMITS SOLUTION MINING OF RUBBLE PILES LOCATED ON SUBTERRANEAN CAVITY FLOORS. THE LINER IS SUNK INTO THE RUBBLE PILE AND DISSOLUTION OF THE PILE TAKES PLACE BY THE INTRODUCTION OF FLUID THROUGH THE LINER TO THE PILE. A STOP MECHANISM SETS THE LINER IN THE PILE AT A FIXED DISTANCE. SOLUTION MINING OF THE MINERAL CONTENT OF RUBBLE PILES IN A SINGLE HOLE CAVITY AS WELL AS FROM A PLURALITY OF INTERCONNECTED SUBTERRANEAN CAVITIES IS DISCLOSED. SPECIFIC APPARATUS IS SHOWN FOR EACH TYPE OF OPERATION.
Inventors
- 👤 Selby W Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:26
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |