US3243000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for drilling wells and similar boreholes
Assignee: ExxonMobil Upstream Research Co
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Filing: 1965-06-23
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Granted: 1966-03-29
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 John T Patton
- 👤 Willis E Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/06; C09K8/08; C08; C08B; C08B37/00; C08B37/0006; C08B37/0024; C08B37/0033; C09K8/14; C09K8/18; C09K8/20; C09K8/206; C12; C12P; C12P19/00; C12P19/04; C12P19/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
IN AN OPERATION WHEREIN AN AQUEOUS MEDIUM IS INJECTED INTO A BOREHOLE IN THE EARTH AND CONTACTED WITH A SUBTERRANEAN FORMATION, THE IMPROVEMENT WHICH COMPRISES INCORPORATING INTO SAID AQUEOUS MEDIUM A HETEROPOLYSACCHARIDE PRODUCED BY THE ACTION OF BACTERIA OF THE GENUS XANTHOMONAS ON A CARBOHYDRATE, CROSS-LINKING THE HETEROPOLYSACCHARIDE IN SAID MEDIUM WITH SUFFICIENT POLYVALENT CATIONS OF A METAL FROM GROUP III THROUGH VIII OF THE PERIODIC TABLE TO INCREASE THE VISCOSITY OF SAID MEDIUM, AND THEREAFTER INJECTING SAID MEDIUM CONTAINING THE CROSS-LINKED HETEROPOLYSACCHARIDE INTO SAID BOREHOLE.
Claim 2
Dependent Claim
86 words
IN AN OPERATION WHEREIN AN AQUEOUS MEDIUM IS INJECTED INTO A BOREHOLE IN THE EARTH AND CONTACTED WITH A SUBTERRANEAN FORMATION, THE IMPROVEMENT WHICH COMPRISES INCORPORATING INTO SAID AQUEOUS MEDIUM A HETEROPOLYSACCHARIDE PRODUCED BY THE ACTION OF BACTERIA OF THE GENUS XANTHOMONAS ON A CARBOHYDRATE, CROSS-LINKING THE HETEROPOLYSACCHARIDE IN SAID MEDIUM WITH SUFFICIENT POLYVALENT CATIONS OF A METAL FROM GROUP III THROUGH VIII OF THE PERIODIC TABLE TO INCREASE THE VISCOSITY OF SAID MEDIUM, AND THEREAFTER INJECTING SAID MEDIUM CONTAINING THE CROSS-LINKED HETEROPOLYSACCHARIDE INTO SAID BOREHOLE.
Claim 3
Dependent Claim
78 words
AN AQUEOUS MEDIUM CONTAINING FROM ABOUT 0.001% TO ABOUT 5% BY WEIGHT OF A HETEROPOLYSACCHARIDE PRODUCED BY THE ACTION OF BACTERIA OF THE GENUS XANTHOMONAS ON A CARBOHYDRATE AND FROM ABOUT 0.001% TO ABOUT 1% BY WEIGHT OF A WATER-SOLUBLE COMPOUND YIELDING POLYVALENT CATIONS OF A METAL FROM GROUPS III THROUGH VIII OF THE PERIODIC TABLE, SAID MEDIUM HAVING A PH IN EXCESS OF ABOUT 6.8 AND THE HETEROPOLYSACCHARIDE MODECULES CONTAINED THEREIN BEING CROSS-LINKED BY SAID POLYVALENT CATIONS.
Claim 4
Dependent Claim
78 words
AN AQUEOUS MEDIUM CONTAINING FROM ABOUT 0.001% TO ABOUT 5% BY WEIGHT OF A HETEROPOLYSACCHARIDE PRODUCED BY THE ACTION OF BACTERIA OF THE GENUS XANTHOMONAS ON A CARBOHYDRATE AND FROM ABOUT 0.001% TO ABOUT 1% BY WEIGHT OF A WATER-SOLUBLE COMPOUND YIELDING POLYVALENT CATIONS OF A METAL FROM GROUPS III THROUGH VIII OF THE PERIODIC TABLE, SAID MEDIUM HAVING A PH IN EXCESS OF ABOUT 6.8 AND THE HETEROPOLYSACCHARIDE MODECULES CONTAINED THEREIN BEING CROSS-LINKED BY SAID POLYVALENT CATIONS.
References Cited (Backward Citations)
US3054689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |