US2880801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing recovery of oil
Assignee: Jersey Production Research Co
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Filing: 1956-10-03
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Granted: 1959-04-07
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Expires: 1976-10-03
Abstract
No abstract record available.
Inventors
- 👤 James S Crump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:18
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A METHOD OF RECOVERING PETROLEUM FLUID CONTAINING PETROLEUM LIQUID FROM A SUBSURFACE RESERVOIR CONTAINING SAID PETROLEUM FLUID, SAID RESERVOIR BEING PROVIDED WITH AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCTION WELL COMPRISING THE STEPS OF INJECTING INTO SAID RESERVOIR THROUGH SAID INJECTION WELL A PREDETERMINED HYDROCARBON MIXTURE COMPRISING A MIXTURE OF METHANE AND AT LEAST ONE INTERMEDIATE HYDROCARBON AT A PRESSURE GREATER THAN THE RESERVOIR PRESSURE IN ORDER TO DISPLACE RESERVOIR FLUIDS TOWARD SAID PRODUCTION WELL, THE CONCENTRATION OF THE INTERMEDIATE HYDROCARBONS IN THE INJECTION MIXTURE BEING WITHIN A PREDETERMINED RANGE, THE UPPER LIMIT OF SAID RANGE BEING DETERMNED EXPERIMENTALLY BY ADDING SUCCESSIVE INCREMENTS OF A HYDROCARBON MIXTURE HAVING A SELECTED RATIO OF METHANE TO INTERMEDIATE TO A SAMPLE OF PETROLEUM LIQUID MAINTAINED AT SAID RESERVOIR PRESSURE AND RESERVOIR TEMPERATURE TO DETERMINE IF SAID HYDROCARBON MIXTURE IS COMPLETELY MISCIBLE WITH SAID PETROLEUM LIQUID AND THEREAFTER REPEATING THE SAID EXPERIMENT BY ADDING MIXTURES OF OTHER SELECTED RATIOS OF METHANE TO INTERMEDIATE TO OTHER SAMPLES OF SAID PETROLEUM LIQUID UNTIL THE MINIMUN CONCENTRATION OF INTERMEDIATE IN THE METHANE-INTER-
Claim 2
Independent Claim
178 words
A METHOD OF RECOVERING PETROLEUM FLUID CONTAINING PETROLEUM LIQUID FROM A SUBSURFACE RESERVOIR CONTAINING SAID PETROLEUM FLUID, SAID RESERVOIR BEING PROVIDED WITH AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCTION WELL COMPRISING THE STEPS OF INJECTING INTO SAID RESERVOIR THROUGH SAID INJECTION WELL A PREDETERMINED HYDROCARBON MIXTURE COMPRISING A MIXTURE OF METHANE AND AT LEAST ONE INTERMEDIATE HYDROCARBON AT A PRESSURE GREATER THAN THE RESERVOIR PRESSURE IN ORDER TO DISPLACE RESERVOIR FLUIDS TOWARD SAID PRODUCTION WELL, THE CONCENTRATION OF THE INTERMEDIATE HYDROCARBONS IN THE INJECTION MIXTURE BEING WITHIN A PREDETERMINED RANGE, THE UPPER LIMIT OF SAID RANGE BEING DETERMNED EXPERIMENTALLY BY ADDING SUCCESSIVE INCREMENTS OF A HYDROCARBON MIXTURE HAVING A SELECTED RATIO OF METHANE TO INTERMEDIATE TO A SAMPLE OF PETROLEUM LIQUID MAINTAINED AT SAID RESERVOIR PRESSURE AND RESERVOIR TEMPERATURE TO DETERMINE IF SAID HYDROCARBON MIXTURE IS COMPLETELY MISCIBLE WITH SAID PETROLEUM LIQUID AND THEREAFTER REPEATING THE SAID EXPERIMENT BY ADDING MIXTURES OF OTHER SELECTED RATIOS OF METHANE TO INTERMEDIATE TO OTHER SAMPLES OF SAID PETROLEUM LIQUID UNTIL THE MINIMUN CONCENTRATION OF INTERMEDIATE IN THE METHANE-INTER-
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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |