US2944803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of subterranean formations containing water-soluble minerals
Assignee: Dow Chemical Co
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Filing: 1959-02-24
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Granted: 1960-07-12
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Alden W Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28; E21B43/283; E21B43/25; E21B43/26; E21B43/281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF TREATING A SUBTERRANEAN FORMATION HAVING A TEMPERATURE ABOVE 0*C. CONTAINING A STRATUM OF A WATER-SOLUBILIZABLE MINERAL TRAVERSED BY A PLURALITY OF WELLS, AT LEAST TWO OF SAID WELLS BEING IN COMMUNICATION WITH EACH OTHER THROUGH AT LEAST ONE FISSURE IN THE STRATUM WHICH INTERCEPTS BOTH WELLS CONSISTING OF INJECTING DOWN AT LEAST ONE OF THE WELLS IN COMMUNICATION, ALONG THE INTERCEPTING FISSURE THEREBETWEEN, AND OUT AT LEAST ONE OTHER OF SAID WELLS IN COMMUNICATION, AT A TEMPERATURE BELOW 0*C., A FLOW OF COLD BRINE FOLLOWED BY A FLOW OF AN AQUEOUS SLURRY OF ICE FRAGMENTS TO ENLARGE AND EXTEND PASSAGEWAYS BETWEEN SAID WELLS.
Claim 2
Independent Claim
106 words
THE METHOD OF TREATING A SUBTERRANEAN FORMATION HAVING A TEMPERATURE ABOVE 0*C. CONTAINING A STRATUM OF A WATER-SOLUBILIZABLE MINERAL TRAVERSED BY A PLURALITY OF WELLS, AT LEAST TWO OF SAID WELLS BEING IN COMMUNICATION WITH EACH OTHER THROUGH AT LEAST ONE FISSURE IN THE STRATUM WHICH INTERCEPTS BOTH WELLS CONSISTING OF INJECTING DOWN AT LEAST ONE OF THE WELLS IN COMMUNICATION, ALONG THE INTERCEPTING FISSURE THEREBETWEEN, AND OUT AT LEAST ONE OTHER OF SAID WELLS IN COMMUNICATION, AT A TEMPERATURE BELOW 0*C., A FLOW OF COLD BRINE FOLLOWED BY A FLOW OF AN AQUEOUS SLURRY OF ICE FRAGMENTS TO ENLARGE AND EXTEND PASSAGEWAYS BETWEEN SAID WELLS.
References Cited (Backward Citations)
US2850270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |