US3024612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing calcium sulfate from underground storage cavities in salt formations
Assignee: Texaco Development Corp
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Filing: 1957-12-03
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Granted: 1962-03-13
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Expires: 1977-12-03
Abstract
No abstract record available.
Inventors
- 👤 Clifford G Ludeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:54
CPC Classifications
B; B65; B65G; B65G5/00; E; E21; E21B; E21B43/00; E21B43/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD FOR CREATING AN UNDERGROUND STORAGE CAVERN IN A SODIUM CHLORIDE SALT FORMATION ALSO CONTAINING CALCIUM SULFATE DEEP BELOW THE SURFACE OF THE EARTH COMPRISING CIRCULATING SUBSTANTIALLY FRESH WATER DOWN INTO SAID SALT FORMATION AND DISSOLVING SALT THEREFROM TO FORM CONCENTRATED BRINE AND LEAVE A CAVITY CONTAINING CALCIUM SULFATE DETRITUS, DISCHARGING SAID BRINE FROM SAID CAVERN, WHEN SAID CAVERN REACHES A DESIRED SIZE CIRCULATING DOWN INTO SAID CAVERN SATURATED SODIUM CHLORIDE BRINE WHICH IS SUBSTANTIALLY FREE FROM DISSOLVED CALCIUM ION AND DISSOLVING THEREIN CALCIUM SULFATE FROM THE DETRITUS IN SAID CAVERN WITHOUT DISSOLVING MORE SODIUM CHLORIDE, AND THEN DISCHARGING FROM SAID CAVERN SAID SODUIM CHLORIDE BRINE CONTAINING DISSOLVED CALCIUM SULFATE, PRECIPITATING THE CALCIUM ION FROM THE DISCHARGED BRINE, AND RECIRCULATING THE BRINE SO TREATED INTO SAID CAVERN TO DISSOLVE MOR CALCIUM SULFATE.
Claim 2
Independent Claim
133 words
A METHOD FOR CREATING AN UNDERGROUND STORAGE CAVERN IN A SODIUM CHLORIDE SALT FORMATION ALSO CONTAINING CALCIUM SULFATE DEEP BELOW THE SURFACE OF THE EARTH COMPRISING CIRCULATING SUBSTANTIALLY FRESH WATER DOWN INTO SAID SALT FORMATION AND DISSOLVING SALT THEREFROM TO FORM CONCENTRATED BRINE AND LEAVE A CAVITY CONTAINING CALCIUM SULFATE DETRITUS, DISCHARGING SAID BRINE FROM SAID CAVERN, WHEN SAID CAVERN REACHES A DESIRED SIZE CIRCULATING DOWN INTO SAID CAVERN SATURATED SODIUM CHLORIDE BRINE WHICH IS SUBSTANTIALLY FREE FROM DISSOLVED CALCIUM ION AND DISSOLVING THEREIN CALCIUM SULFATE FROM THE DETRITUS IN SAID CAVERN WITHOUT DISSOLVING MORE SODIUM CHLORIDE, AND THEN DISCHARGING FROM SAID CAVERN SAID SODUIM CHLORIDE BRINE CONTAINING DISSOLVED CALCIUM SULFATE, PRECIPITATING THE CALCIUM ION FROM THE DISCHARGED BRINE, AND RECIRCULATING THE BRINE SO TREATED INTO SAID CAVERN TO DISSOLVE MOR CALCIUM SULFATE.
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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |