US2859820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing water production in oil wells
Assignee: California Research LLC
•
Filing: 1957-05-07
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Granted: 1958-11-11
•
Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Donald E Trott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:42
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/516; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
THE METHOD OF REDUCING THE FLOW OF WATER INTO A WELL PENETRATING AN EARTH FORMATION HAVING ZONES PRODUCIGN BOTH OIL AND WATER WHICH COMPRISES THE STEPS OF INTRODUCING INTO SAID WELL A PUMPABLE MIXTURE OF A WATERINSOLUBLE, OIL-SOLUBLE PARTICULATE MATERIAL AND A NONHYDROCARBON SOLUBLE FLUID CARRIER, PUMPING SAID MIXTURE INTO CONTACT WITH SAID FORMATION UNDER SUFFICIENT PRESSURE TO STOP FLUID FLOW FROM BOTH SAID OIL AND WATER ZONES OF SAID FORMATION INTO SAID WELL, CONTINUING SAID PUMPING OF SAID MIXTURE UNDER PRESSURE INTO SAID FORMATION UNTIL SAID PARTICULATE MATERIAL IS DISPLACED INTO SAID FORMATION TO SEAL OFF BOTH SAID OIL AND WATER PRODUCING ZONES, THEN PERMITTING OIL IN SAID OIL PRODUCING ZONE TO DISSOLVE SAID PARTICULATE MATERIAL FROM SAID OIL PRODUCING ZONE, THEN INJECTING A HYDRAULIC FRACTURING LIQUID INTO SAID WELL AND INCREASING THE PRESSURE ON SAID FRACTURING LIQUID TO PREFERENTIALLY FRACTURE SAID OIL PRODUCING ZONE RELATIVE TO SAID WATER PRODUCING ZONE.
Claim 2
Independent Claim
152 words
THE METHOD OF REDUCING THE FLOW OF WATER INTO A WELL PENETRATING AN EARTH FORMATION HAVING ZONES PRODUCIGN BOTH OIL AND WATER WHICH COMPRISES THE STEPS OF INTRODUCING INTO SAID WELL A PUMPABLE MIXTURE OF A WATERINSOLUBLE, OIL-SOLUBLE PARTICULATE MATERIAL AND A NONHYDROCARBON SOLUBLE FLUID CARRIER, PUMPING SAID MIXTURE INTO CONTACT WITH SAID FORMATION UNDER SUFFICIENT PRESSURE TO STOP FLUID FLOW FROM BOTH SAID OIL AND WATER ZONES OF SAID FORMATION INTO SAID WELL, CONTINUING SAID PUMPING OF SAID MIXTURE UNDER PRESSURE INTO SAID FORMATION UNTIL SAID PARTICULATE MATERIAL IS DISPLACED INTO SAID FORMATION TO SEAL OFF BOTH SAID OIL AND WATER PRODUCING ZONES, THEN PERMITTING OIL IN SAID OIL PRODUCING ZONE TO DISSOLVE SAID PARTICULATE MATERIAL FROM SAID OIL PRODUCING ZONE, THEN INJECTING A HYDRAULIC FRACTURING LIQUID INTO SAID WELL AND INCREASING THE PRESSURE ON SAID FRACTURING LIQUID TO PREFERENTIALLY FRACTURE SAID OIL PRODUCING ZONE RELATIVE TO SAID WATER PRODUCING ZONE.
References Cited (Backward Citations)
US2201459A
Cited
US2773670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |