Patent US3103972A successfully refreshed from Google Patents.
US3103972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miscible-fluid flooding technique
Assignee: Phillips Petroleum Co
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Filing: 1959-12-28
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Granted: 1963-09-17
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Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A METHOD OF RECOVERING HYDROCARBONS FROM A HYDROCARBON-BEARING FORMATION HAVING AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCING WELL, THE STEPS OF INJECTING INTO THE FORMATION THROUGH THE INJECTION WELL A CRUDE OIL SLUG WHICH IS SUBSTANTIALLY FREE OF MATERIALS THAT FORM ASPHALTIC PRECIPITATES UPON CONTACTING LIGHTER HYDROCARBONS SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF HYDROCARBONS WITH A CARBON CHAIN LENGTH OF THREE AND FOUR CARBON ATOMS AND NATURAL GASOLINE, INJECTING SAID LIGHTER HYDROCARBONS INTO SAID FORMATION BEHIND SAID OIL SING, SAID CRUDE OIL BEING INJECTED IN AN AMOUNT SUFFICIENT TO FORM A COMPLETE BARRIER BETWEEN SAID HYDROCARBONS IN FROMATION AND SAID LIGHTER HYDROCARBONS, AND PRODUCING THE HYDROCARBONS IN SAID FORMATION FROM SAID AT LEAST ONE PRODUCING WELL.
Claim 2
Dependent Claim
121 words
IN A METHOD OF RECOVERING HYDROCARBONS FROM A HYDROCARBON-BEARING FORMATION HAVING AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCING WELL, THE STEPS OF INJECTING INTO THE FORMATION THROUGH THE INJECTION WELL A CRUDE OIL SLUG WHICH IS SUBSTANTIALLY FREE OF MATERIALS THAT FORM ASPHALTIC PRECIPITATES UPON CONTACTING LIGHTER HYDROCARBONS SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF HYDROCARBONS WITH A CARBON CHAIN LENGTH OF THREE AND FOUR CARBON ATOMS AND NATURAL GASOLINE, INJECTING SAID LIGHTER HYDROCARBONS INTO SAID FORMATION BEHIND SAID OIL SING, SAID CRUDE OIL BEING INJECTED IN AN AMOUNT SUFFICIENT TO FORM A COMPLETE BARRIER BETWEEN SAID HYDROCARBONS IN FROMATION AND SAID LIGHTER HYDROCARBONS, AND PRODUCING THE HYDROCARBONS IN SAID FORMATION FROM SAID AT LEAST ONE PRODUCING WELL.
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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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |