Patent US2933135A successfully refreshed from Google Patents.
US2933135A
Expired / Lapsed
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Well strata productivity control
Assignee: Standard Oil Co
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Filing: 1955-11-01
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Granted: 1960-04-19
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Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 Everett A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:50
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD OF PLUGGING OFF WATER PRODUCTION FROM A FORMATION TRAVERSED BY A WELL BORE AND WHICH PRODUCES BOTH WATER AND OIL WHICH COMPRISES FRACTURING SAID FORMATION BY INJECTING INTO SAID WELL BORE A SUSPENSION OF HYDRAULIC CEMENT IN AN ORGANIC HYDROPHOBIC FLUID, SAID HYDRAULIC CEMENT HAVING A PARTICLE SIZE OF BETWEEN ABOUT 10 AND 200 MESH, APPLYING PRESSURE TO SAID SUSPENSION SUFFICIENT TO PRODUCE A FRACTURE IN SAID FORMATION, WHEREBY SUCH SUSPENSION ENTERS SAID FORMATION, REMOVING EXCESS SUSPENSION FROM THE WELL BORE, AND PRODUCING WATER CONTAINING FLUIDS FROM SAID FORMATION TO DISPLACE THE SUSPENDING FLUID FROM THE FORMATION AND TO CAUSE SAID CEMENT WILTHIN SAID FORMATION TO SET.
Claim 2
Independent Claim
109 words
A METHOD OF PLUGGING OFF WATER PRODUCTION FROM A FORMATION TRAVERSED BY A WELL BORE AND WHICH PRODUCES BOTH WATER AND OIL WHICH COMPRISES FRACTURING SAID FORMATION BY INJECTING INTO SAID WELL BORE A SUSPENSION OF HYDRAULIC CEMENT IN AN ORGANIC HYDROPHOBIC FLUID, SAID HYDRAULIC CEMENT HAVING A PARTICLE SIZE OF BETWEEN ABOUT 10 AND 200 MESH, APPLYING PRESSURE TO SAID SUSPENSION SUFFICIENT TO PRODUCE A FRACTURE IN SAID FORMATION, WHEREBY SUCH SUSPENSION ENTERS SAID FORMATION, REMOVING EXCESS SUSPENSION FROM THE WELL BORE, AND PRODUCING WATER CONTAINING FLUIDS FROM SAID FORMATION TO DISPLACE THE SUSPENDING FLUID FROM THE FORMATION AND TO CAUSE SAID CEMENT WILTHIN SAID FORMATION TO SET.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |