US3606466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subterranean brine purification
Assignee: Marathon Oil Co
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Filing: 1969-12-04
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Granted: 1971-09-20
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Expires: 1989-12-04
Abstract
Abstract TO REMOVE IMPURITIES (LARGELY CALCIUM CHLORIDE AND MAGNESIUM CHLORIDE) FROM BRINE RECOVERED FROM THE SOLUTION MINING OF SODIUM CHLORIDE DEPOSITS, ALKALI METAL CARBONATE AND ALKALI METAL HYDROXIDE ARE ADDED TO THE WATER INJECTED INTO THE FORMATION TO DISSOLVE THE SALT. THE CALCIUM CARBONATE AND MAGNESIUM HYDROXIDE THUS FORMED WILL PRECIPITATE AND SETTLE WITHIN THE SALT CAVITY. THICKENING AGENTS OR OTHER COAGULANTS CAN OPTIONALLY BE USED TO SPEED COAGULATION AND SETTLING.
Inventors
- 👤 Dudley P Fernandes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:18
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28; C; C01; C01D; C01D3/00; C01D3/14; C01D3/16
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |