US2863509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of wells
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-10-22
•
Granted: 1958-12-09
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Expires: 1973-10-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph U Messenger
- 👤 William R Foster
- 👤 Jr Sherrod A Williams
- 👤 Jr Laurence M Hermes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/5045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A COMPOSITION FOR USE IN THE TREATMENT OF A WELL BORE HOLE IN THE EARTH COMPRISING ALKALI METAL MONTMORILLONITE WHICH HAS BEEN HEATED AT A TEMPERATURE BETWEEN 400*F. AND 1000*F. FOR A TIME BETWEEN SEVERAL MINUTES AND 24 HOURS SUCH THAT AT LEAST A PORTION OF THE INTERLAMINAR WATER HAS BEEN REMOVED THEREFROM AND THE VALUE OF THE QUANTITY (B(T, T)-B(0)) IS AT LEAST 40 IN WHICH QUANTITY B IS A NUMBER CHARACTERISTIC OF SAID ALKALI METAL MONTMORILLONITE IN A WATER SLURRY AND HAS A VALUE GIVEN BY THE EXPRESSION UP=UMEBCV, WHEREIN UP IS THE PLASTIC VISCOSITY OF SAID SLURRY, UM IS THE VISCOSITY OF THE WATER IN SAID SLURRY, CV IS THE VOLUME FRACTION OF SAID ALKALI METAL MONTMORILLONITE IN SAID SLURRY, AND E IS THE BASE OF THE NATURAL LOGARITHMS, AND B(0) IS THE VALUE OF SAID NUMBER INITIALLY UPON FORMATION OF SAID SLURRY AND B(T, T) IS THE VALUE OF SAID NUMBER AFTER SAID SLURRY HAS AGED FOR 16 HOURS AT 170*F.
Claim 2
Dependent Claim
165 words
A COMPOSITION FOR USE IN THE TREATMENT OF A WELL BORE HOLE IN THE EARTH COMPRISING ALKALI METAL MONTMORILLONITE WHICH HAS BEEN HEATED AT A TEMPERATURE BETWEEN 400*F. AND 1000*F. FOR A TIME BETWEEN SEVERAL MINUTES AND 24 HOURS SUCH THAT AT LEAST A PORTION OF THE INTERLAMINAR WATER HAS BEEN REMOVED THEREFROM AND THE VALUE OF THE QUANTITY (B(T, T)-B(0)) IS AT LEAST 40 IN WHICH QUANTITY B IS A NUMBER CHARACTERISTIC OF SAID ALKALI METAL MONTMORILLONITE IN A WATER SLURRY AND HAS A VALUE GIVEN BY THE EXPRESSION UP=UMEBCV, WHEREIN UP IS THE PLASTIC VISCOSITY OF SAID SLURRY, UM IS THE VISCOSITY OF THE WATER IN SAID SLURRY, CV IS THE VOLUME FRACTION OF SAID ALKALI METAL MONTMORILLONITE IN SAID SLURRY, AND E IS THE BASE OF THE NATURAL LOGARITHMS, AND B(0) IS THE VALUE OF SAID NUMBER INITIALLY UPON FORMATION OF SAID SLURRY AND B(T, T) IS THE VALUE OF SAID NUMBER AFTER SAID SLURRY HAS AGED FOR 16 HOURS AT 170*F.
References Cited (Backward Citations)
US2233973A
Cited
US2648522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |