US2718262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary oil recovery by selfpropelled solvent extraction
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-01-29
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Granted: 1955-09-20
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Expires: 1972-01-29
Abstract
No abstract record available.
Inventors
- 👤 Jr George G Binder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:04
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
PROCESS FOR THE SECONDARY RECOVERY OF PETROLEUM OIL FROM AN OIL-BEARING FORMATION PENETRATED BY A FIRST WELL HEREINAFTER REFERRED TO AS A PRODUCTION WELL AND A SECOND WELL HEREINAFTER REFERRED TO AS THE INJECTION WELL WHICH COMPRISES THE STEPS OF INJECTING ABOUT 10 TO 30 PORE VOLUME PERCENT OF A LIQUIFIED NORMALLY GASEOUS C2 TO C5 HYDROCARBON INTO THE RESERVOIR THROUGH THE SAID INJECTION WELL WHEREBY A BANK OF LIQUID PHASE HYDROCARBON MATERIAL WILL EXIST IN THE SAID FORMATION ADJACENT THE INJECTION WELL, THEREAFTER DISCONTINUING THE INJECTION OF SAID LIQUEFIED HYDROCARBON, SEALING SAID INJECTION TO PREVENT RELEASE OF HYDROCARBON MATERIAL THEREFROM, AND MAINTAINING A PRESSURE AT THE SAID PRODUCTION WELL AND THE ADJACENT FORMATION AT A LEVEL TO PERMIT VAPORIZATION OF THE SAID LIQUEFIED HYDROCARBON AT THE TEMPERATURE OF THE FORMATION, AND WITHDRAWING FLUID FROM SAID PRODUCTION WELL.
Claim 2
Dependent Claim
138 words
PROCESS FOR THE SECONDARY RECOVERY OF PETROLEUM OIL FROM AN OIL-BEARING FORMATION PENETRATED BY A FIRST WELL HEREINAFTER REFERRED TO AS A PRODUCTION WELL AND A SECOND WELL HEREINAFTER REFERRED TO AS THE INJECTION WELL WHICH COMPRISES THE STEPS OF INJECTING ABOUT 10 TO 30 PORE VOLUME PERCENT OF A LIQUIFIED NORMALLY GASEOUS C2 TO C5 HYDROCARBON INTO THE RESERVOIR THROUGH THE SAID INJECTION WELL WHEREBY A BANK OF LIQUID PHASE HYDROCARBON MATERIAL WILL EXIST IN THE SAID FORMATION ADJACENT THE INJECTION WELL, THEREAFTER DISCONTINUING THE INJECTION OF SAID LIQUEFIED HYDROCARBON, SEALING SAID INJECTION TO PREVENT RELEASE OF HYDROCARBON MATERIAL THEREFROM, AND MAINTAINING A PRESSURE AT THE SAID PRODUCTION WELL AND THE ADJACENT FORMATION AT A LEVEL TO PERMIT VAPORIZATION OF THE SAID LIQUEFIED HYDROCARBON AT THE TEMPERATURE OF THE FORMATION, AND WITHDRAWING FLUID 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) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |