Patent US3344857A successfully refreshed from Google Patents.
US3344857A
Expired / Lapsed
US
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Fluid drive production of oil
Assignee: Phillips Petroleum Co
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Filing: 1965-03-08
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Granted: 1967-10-03
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Gilchrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:00
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/594; E; E21; E21B; E21B43/00; E21B43/16; E21B43/164; Y; Y02; Y02P; Y02P90/00; Y02P90/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR PRODUCING OIL FROM AN OIL-BEARING STRATUM PENETRATED BY AN INJECTION WELL AND A PRODUCTION WELL COMPRISING THE STEPS OF: (A) INJECTING INTO SAID STRATUM THRU SAID INJECTION WELL IN THE FOLLOWING SEQUENCE: (1) A BANK OF AQUEOUS SOLUTION OF SURFACTANT WHICH DECREASES THE SOLUBILITY OF CO2 THEREIN AS COMPARED TO PURE WATER, THE CONCENTRATION OF SURFACTANT BEING IN THE RANGE OF 0.0001 TO 10 WEIGHT PERCENT; (2) A BANK OF GASEOUS CO2; AND (3) A SECOND BANK OF THE AQUEOUS SOLUTION OF (1); (B) DRIVING THE INJECTED BANKS THRU SAID STRATUM TOWARD SAID PRODUCTION WELL BY FLUID DRIVE SO AS TO DISPLACE OIL THEREINTO; AND (C) PRODUCING THE OIL DISPLACED IN STEP (B) FROM SAID PRODUCTION WELL.
Claim 2
Dependent Claim
120 words
A PROCESS FOR PRODUCING OIL FROM AN OIL-BEARING STRATUM PENETRATED BY AN INJECTION WELL AND A PRODUCTION WELL COMPRISING THE STEPS OF: (A) INJECTING INTO SAID STRATUM THRU SAID INJECTION WELL IN THE FOLLOWING SEQUENCE: (1) A BANK OF AQUEOUS SOLUTION OF SURFACTANT WHICH DECREASES THE SOLUBILITY OF CO2 THEREIN AS COMPARED TO PURE WATER, THE CONCENTRATION OF SURFACTANT BEING IN THE RANGE OF 0.0001 TO 10 WEIGHT PERCENT; (2) A BANK OF GASEOUS CO2; AND (3) A SECOND BANK OF THE AQUEOUS SOLUTION OF (1); (B) DRIVING THE INJECTED BANKS THRU SAID STRATUM TOWARD SAID PRODUCTION WELL BY FLUID DRIVE SO AS TO DISPLACE OIL THEREINTO; AND (C) PRODUCING THE OIL DISPLACED IN STEP (B) FROM SAID PRODUCTION WELL.
References Cited (Backward Citations)
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Cited
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US3185634A
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US3249157A
Cited
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US3227210A
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |