US2808248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining of sulfur using spaced-apart wells
Assignee: Exxon Mobil Corp
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Filing: 1956-09-26
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Granted: 1957-10-01
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Expires: 1976-09-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Prokop
- 👤 Gilbert G Wrightsman
- 👤 Wilmer A Hoyer
- 👤 Jr Millard S Taggart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:23
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A METHOD FOR MINING SULFUR FROM AN UNDERGROUND FORMATION CONTAINING A SULFUR DEPOSIT PENETRATED BY AT LEAST TWO SPACED-APART WELLS WITH THE FIRST OF SAID WELLS PENETRATING SAID SULFUR DEPOSIT AT A LEVEL ABOVE THE LEVEL WHERE SAID SULFUR DEPOSIT IS PENETRATED BY A SECOND OF SAID WELLS WHICH COMPRISES INTRODUCING HOT GAS INTO THE FIRST OF SAID WELLS AT A TEMPERATURE SUFFICIENT TO MELT SULFUR IN SAID DEPOSIT AND AT A PRESSURE SUFFICIENT TO CAUSE SAID GAS TO TRAVEL TO THE SECOND OF SAID WELLS, PRODUCING WATER AND GAS FROM THE SECOND WELL AND PRODUCING MELTED SULFUR FROM AT LEAST THE FIRST WELL, SAID HOT GAS DISPLACING FORMATION WATER AND PROVIDING AN EXPANDING GAS CAP IN SAID FORMATION WHEREBY SAID DEPOSIT IS PROGRESSIVELY DEPLETED OF SULFUR FROM THE HIGHEST ELEVATION IN SAID FORMATION TO THE LOWEST ELEVATION IN SAID FORMATION.
Claim 2
Independent Claim
141 words
A METHOD FOR MINING SULFUR FROM AN UNDERGROUND FORMATION CONTAINING A SULFUR DEPOSIT PENETRATED BY AT LEAST TWO SPACED-APART WELLS WITH THE FIRST OF SAID WELLS PENETRATING SAID SULFUR DEPOSIT AT A LEVEL ABOVE THE LEVEL WHERE SAID SULFUR DEPOSIT IS PENETRATED BY A SECOND OF SAID WELLS WHICH COMPRISES INTRODUCING HOT GAS INTO THE FIRST OF SAID WELLS AT A TEMPERATURE SUFFICIENT TO MELT SULFUR IN SAID DEPOSIT AND AT A PRESSURE SUFFICIENT TO CAUSE SAID GAS TO TRAVEL TO THE SECOND OF SAID WELLS, PRODUCING WATER AND GAS FROM THE SECOND WELL AND PRODUCING MELTED SULFUR FROM AT LEAST THE FIRST WELL, SAID HOT GAS DISPLACING FORMATION WATER AND PROVIDING AN EXPANDING GAS CAP IN SAID FORMATION WHEREBY SAID DEPOSIT IS PROGRESSIVELY DEPLETED OF SULFUR FROM THE HIGHEST ELEVATION IN SAID FORMATION TO THE LOWEST ELEVATION IN SAID FORMATION.
References Cited (Backward Citations)
US581479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |