US3198249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sealing off porous subterranean formations and for improving conformance of in-situ combustion
Assignee: ExxonMobil Upstream Research Co
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Filing: 1961-09-01
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Granted: 1965-08-03
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Expires: 1981-09-01
Abstract
No abstract record available.
Inventors
- 👤 Bertram T Willman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:15
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/514; E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A METHOD FOR EALING OFF AT LEAST A PORTION OF A POROUS EARTH FORMATION WHICH COMPRISES: HEATING SAID PORTION TO A TEMPERATURE SUBSTANTIALLY ABOVE THE CARBONIZATION TEMPERATURE OF SUGAR, AND THEN CONTACTING THE HEATED PORTION WITH A SOLUTION OF SUGAR IN WATER, WHEREBY
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |