US3086760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of creating an underground communication
Assignee: FMC Corp
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Filing: 1960-05-25
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Granted: 1963-04-23
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Expires: 1980-05-25
Abstract
No abstract record available.
Inventors
- 👤 Carl A Bays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:32
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28; E21B43/283
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A METHOD FOR CREATING AN UNDERGROUND PASSAGE FOR SOLUTION MINING OF DENSE COMPACTED SALT DEPOSITS COMPRISING: DRILLING A PAIR OF WALLS INTO THE SALT FORMATION, IMPOSING A FLUID PRESSURE ON THE FORMATION ADJACENT ONE OF THE WALLS SUFFICIENT TO FRACTURE THE FORMATION AND CONNECT THE TWO WELLS BY PUMPING AN AQUEOUS SOLVENT INTO ONE OF SAID WALLS MAINTAINING SUFFICIENT PRESSURE ON SAID AQUEOUS SOLVENT IN THE FRACTURED FORMATION TO SUPPORT THE OVERLYING FORMATION ON THE FRACTURING SOLVENT AND PREVENT RESTTLING OF THE FORMATION UNTIL THE FRACTURE
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |