US3333632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additional oil recovery by improved miscible displacement
Assignee: ExxonMobil Upstream Research Co
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Filing: 1963-02-27
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Granted: 1967-08-01
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Expires: 1983-02-27
Abstract
No abstract record available.
Inventors
- 👤 John R Kyte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:50
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD FOR INCREASING THE RECOVERY OF OIL FROM A POROUS SUB-SURFACE RESERVOIR PENETRATED BY AN INJECTION WELL AND A PRODUCTION WELL WHICH COMPRISES INTRODUCING INTO SAID RESERVOIR THROUGH SAID INJECTION WELL A CONDENSABLE SOLVENT VAPOR SELECTED FROM THE GROUP CONSISTING OF HYDROGEN SULFIDE, SULFUR DIOXIDE, AMMONIA, AND SULFUR TRIOXIDE, UNDER CONDITIONS OF TEMPERATURE AND PRESSURE WHICH CAUSE A PARTIAL CONDENSAITON OF THE INJECTED VAPOR UPON ITS APPROACH TO THERMAL EQUILIBRIUM WITH THE RESERVOIR, THEREBY FORMING AN OIL MISCIBLE CONDENSATE BANK; DRIVING THE RESULTING CONDENSATE BANK THROUGH THE RESERVOIR BY CONTINUING TO INJECT SAID CONDENSABLE VAPOR STREAM UNDER CONDITIONS OF TEMPERATURE AND PRESSURE WHICH ESTABLISH AND MAINTAIN A VAPOR BANK HAVING A VOLUME AT LEAST AS GREAT AS THE VOLUME OF THE CONDENSATE BANK; AND PRODUCING RESERVOIR OIL FROM SAID PRODUCTION WELL.
Claim 2
Independent Claim
132 words
A METHOD FOR INCREASING THE RECOVERY OF OIL FROM A POROUS SUB-SURFACE RESERVOIR PENETRATED BY AN INJECTION WELL AND A PRODUCTION WELL WHICH COMPRISES INTRODUCING INTO SAID RESERVOIR THROUGH SAID INJECTION WELL A CONDENSABLE SOLVENT VAPOR SELECTED FROM THE GROUP CONSISTING OF HYDROGEN SULFIDE, SULFUR DIOXIDE, AMMONIA, AND SULFUR TRIOXIDE, UNDER CONDITIONS OF TEMPERATURE AND PRESSURE WHICH CAUSE A PARTIAL CONDENSAITON OF THE INJECTED VAPOR UPON ITS APPROACH TO THERMAL EQUILIBRIUM WITH THE RESERVOIR, THEREBY FORMING AN OIL MISCIBLE CONDENSATE BANK; DRIVING THE RESULTING CONDENSATE BANK THROUGH THE RESERVOIR BY CONTINUING TO INJECT SAID CONDENSABLE VAPOR STREAM UNDER CONDITIONS OF TEMPERATURE AND PRESSURE WHICH ESTABLISH AND MAINTAIN A VAPOR BANK HAVING A VOLUME AT LEAST AS GREAT AS THE VOLUME OF THE CONDENSATE BANK; AND PRODUCING RESERVOIR OIL FROM SAID PRODUCTION WELL.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |