Patent US2896931A successfully refreshed from Google Patents.
US2896931A
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Mining of sulfur by liquefaction of the sulfur
Assignee: Exxon Mobil Corp
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Filing: 1958-01-22
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Granted: 1959-07-28
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Expires: 1978-01-22
Abstract
No abstract record available.
Inventors
- 👤 Urban C Marquis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:23
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/027; C01B17/033; E; E21; E21B; E21B43/00; E21B43/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD FOR MINING SULFUR WHICH COMPRISES INJECTING A SUFFICIENT AMOUNT OF GAS INTO THE PORE SPACES OF THE CAP ROCK AND THE UNDERLYING SULFUR-CONTAINING FORMATION OF A POROUS SULFUR DEPOSIT TO DISPLACE SUBSTANTIALLY ALL OF THE WATER CONTAINED IN SAID CAP ROCK AND THE SULFUR-CONTAINING FORMATION, REMOVING THE DISPLACED WATER FROM THE CAP ROCK AND THE SULFUR-CONTAINING FORMATION, INJECTING HOT WATER AT A TEMPERATURE SUFFICIENT TO MELT SULFUR INTO THE GAS-CONTAINING CAP ROCK ABOVE THE SULFUR-CONTAINING FORMATION WHEREBY THE HOT WATER DRAINS DOWN THROUGH THE SULFUR-CONTAINING FORMATION LIQUEFYING SAME, AND REMOVING LIQUEFIED SULFUR FROM THE SULFUR-CONTAINING FORMATION.
Claim 2
Independent Claim
98 words
A METHOD FOR MINING SULFUR WHICH COMPRISES INJECTING A SUFFICIENT AMOUNT OF GAS INTO THE PORE SPACES OF THE CAP ROCK AND THE UNDERLYING SULFUR-CONTAINING FORMATION OF A POROUS SULFUR DEPOSIT TO DISPLACE SUBSTANTIALLY ALL OF THE WATER CONTAINED IN SAID CAP ROCK AND THE SULFUR-CONTAINING FORMATION, REMOVING THE DISPLACED WATER FROM THE CAP ROCK AND THE SULFUR-CONTAINING FORMATION, INJECTING HOT WATER AT A TEMPERATURE SUFFICIENT TO MELT SULFUR INTO THE GAS-CONTAINING CAP ROCK ABOVE THE SULFUR-CONTAINING FORMATION WHEREBY THE HOT WATER DRAINS DOWN THROUGH THE SULFUR-CONTAINING FORMATION LIQUEFYING SAME, AND REMOVING LIQUEFIED SULFUR FROM THE SULFUR-CONTAINING FORMATION.
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) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |