Patent US2745294A successfully refreshed from Google Patents.
Patent US3307629A successfully refreshed from Google Patents.
US3307629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective plugging of permeable earth formations
Assignee: Mobil Oil AS
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Filing: 1963-06-17
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Granted: 1967-03-07
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Lorld G Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:56
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/5045; C09K8/502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN A WELL IN THE EARTH WHEREIN SAID WELL PENETRATES AT LEAST A PORTION OF A FORMATION CONTAINING WATER AND AT LEAST A PORTION OF A FORMATION CONTAINING HYDROCARBONS, THE PROCEDURE FOR SELECTIVELY PLUGGING SAID PORTION OF SAID FORMATION CONTAINING WATER COMPRISING PLACING IN SAID WELL ADJACENT SAID PORTION AT LEAST OF SAID FORMATION CONTAINING WATER AND SAID PORTION AT LEAST OF SAID FORMATION CONTAINING HYDROCARBON A VISCOUS HYDROCARBON HAVING A VISCOSITY GREATER THAN THE VISCOSITY OF SAID HYDROCARBON CONTAINED IN SAID FORMATION AND AT LEAST 30 CENTIPOISES, IMPOSING A PRESSURE UPON SAID HYDROCARBON WHEREIN SAID VISCOUS HYDROCARBON PREFERENTIALLY ENTERS SAID PORTION OF SAID FORMATION CONTAINING HYDROCARBONS, THEREAFTER PLACING IN SAID WELL ADJACENT SAID PORTION AT LEAST OF SAID FORMATION CONTAINING HYDROCARBONS AND ADJACENT TO SAID PORTION AT LEAST OF SAID FORMATION CONTAINING WATER AN AQUEOUS SOLUTION OF A PLUGGING AGENT WHICH UNDER THE CONDITIONS PREVAILING IN AN EARTH FORMATION WILL SET TO SEAL THE FORMATION TO THE FLOW OF A FLUID, IMPOSING A PRESSURE UPON SAID AQUEOUS SOLUTION WHEREBY SAID AQUEOUS SOLUTION PREFERENTIALLY ENTERS SAID PORTION OF SAID FORMATION CONTAINING WATER, AND MAINTAINING SAID PRESSURE UPON SAID AQUEOUS SOLUTION UNTIL SAID PLUGGING AGENT SETS.
Claim 2
Dependent Claim
195 words
IN A WELL IN THE EARTH WHEREIN SAID WELL PENETRATES AT LEAST A PORTION OF A FORMATION CONTAINING WATER AND AT LEAST A PORTION OF A FORMATION CONTAINING HYDROCARBONS, THE PROCEDURE FOR SELECTIVELY PLUGGING SAID PORTION OF SAID FORMATION CONTAINING WATER COMPRISING PLACING IN SAID WELL ADJACENT SAID PORTION AT LEAST OF SAID FORMATION CONTAINING WATER AND SAID PORTION AT LEAST OF SAID FORMATION CONTAINING HYDROCARBON A VISCOUS HYDROCARBON HAVING A VISCOSITY GREATER THAN THE VISCOSITY OF SAID HYDROCARBON CONTAINED IN SAID FORMATION AND AT LEAST 30 CENTIPOISES, IMPOSING A PRESSURE UPON SAID HYDROCARBON WHEREIN SAID VISCOUS HYDROCARBON PREFERENTIALLY ENTERS SAID PORTION OF SAID FORMATION CONTAINING HYDROCARBONS, THEREAFTER PLACING IN SAID WELL ADJACENT SAID PORTION AT LEAST OF SAID FORMATION CONTAINING HYDROCARBONS AND ADJACENT TO SAID PORTION AT LEAST OF SAID FORMATION CONTAINING WATER AN AQUEOUS SOLUTION OF A PLUGGING AGENT WHICH UNDER THE CONDITIONS PREVAILING IN AN EARTH FORMATION WILL SET TO SEAL THE FORMATION TO THE FLOW OF A FLUID, IMPOSING A PRESSURE UPON SAID AQUEOUS SOLUTION WHEREBY SAID AQUEOUS SOLUTION PREFERENTIALLY ENTERS SAID PORTION OF SAID FORMATION CONTAINING WATER, AND MAINTAINING SAID PRESSURE UPON SAID AQUEOUS SOLUTION UNTIL SAID PLUGGING AGENT SETS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |