US2887159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of shutting off water in petroleum wells
Assignee: Dow Chemical Co
•
Filing: 1955-11-16
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Granted: 1959-05-19
•
Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 William B Harley
- 👤 James A Harmon
- 👤 Sutherlin Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:40
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE METHOD OF TREATING AN OIL JWELL PENETRATING A PETROLEUM-BEARING FORMATION WHICH ADMITS WATER OR BRINE TO THE WELL, THE WELL HAVING THE USUAL CASING THEREIN, SO AS TO IMPROVE THE RATIO OF THE RATE OF OIL PRODUCTION TO THAT OF WATER OR BRINE WHICH COMPRISES MAKING AN INJECTION INTO THE PRODUCING FORMATION OF THE WELL OF A PUMPABLE SLURRY OF A HYDRAULIC CEMENT ON A LOW FLUID LOSS VEHICLE COMPRISING PETROLEUM OIL, SAID VEHICLE BEING FREE FROM WATER AND HAVING A FLUID LOSS OF NOT GREATER THAN 600 MILLILITERS IN 2 MINUTES AT 80*F. AND CHASING THE INJECTION OF THE SLURRY WITH AN INJECTION OF PERTOLEUM OIL DEVOID OF CEMENT IN A VOLUME AT LEAST ONE-HALF THAT OF THE SLURRY, AND SHUTTING IN THE WELL SO AS TO ALLOW THE CEMENT TO HYDRATE IN THE PRESENCE OF THE WATER OR BRINE ENCOUNTERED BY THE CEMENT IN THE EARTH FORMATIONS.
Claim 2
Independent Claim
150 words
THE METHOD OF TREATING AN OIL JWELL PENETRATING A PETROLEUM-BEARING FORMATION WHICH ADMITS WATER OR BRINE TO THE WELL, THE WELL HAVING THE USUAL CASING THEREIN, SO AS TO IMPROVE THE RATIO OF THE RATE OF OIL PRODUCTION TO THAT OF WATER OR BRINE WHICH COMPRISES MAKING AN INJECTION INTO THE PRODUCING FORMATION OF THE WELL OF A PUMPABLE SLURRY OF A HYDRAULIC CEMENT ON A LOW FLUID LOSS VEHICLE COMPRISING PETROLEUM OIL, SAID VEHICLE BEING FREE FROM WATER AND HAVING A FLUID LOSS OF NOT GREATER THAN 600 MILLILITERS IN 2 MINUTES AT 80*F. AND CHASING THE INJECTION OF THE SLURRY WITH AN INJECTION OF PERTOLEUM OIL DEVOID OF CEMENT IN A VOLUME AT LEAST ONE-HALF THAT OF THE SLURRY, AND SHUTTING IN THE WELL SO AS TO ALLOW THE CEMENT TO HYDRATE IN THE PRESENCE OF THE WATER OR BRINE ENCOUNTERED BY THE CEMENT IN THE EARTH FORMATIONS.
References Cited (Backward Citations)
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US2065512A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |