US2693104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring relative permeability of a porous medium to a wetting phase
Assignee: Standard Oil Development Co
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Filing: 1949-10-27
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Granted: 1954-11-02
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Expires: 1969-10-27
Abstract
No abstract record available.
Inventors
- 👤 Henry J Welge
- 👤 Leo A Rapoport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
A METHOD FOR DETERMINING THE RELATIVE PERMEABILITY OF A ROCK SAMPLE WITH RESPECT TO A WETTING PHASE IN THE PRESENCE OF A NON-WETTING PHASE WHICH COMPRISES PLACING SAID SAMPLE IN CONTACT, AT A SELECTED ABSOLUTE PRESSURE, WITH A BODY OF LIQUID THAT HAS LESS WETTING POWER THAN AIR FOR SAID SAMPLE, MAINTAINING CONTACT BETWEEN SAID LIQUID AND SAID SAMPLE FOR A SUFFICIENT PERIOD OF TIME TO ENABLE SAID LIQUID TO ENTER AT LEAST SOME OF THE PORE SPACE IN SAID SAMPLE, REMOVING SAID SAMPLE FROM CONTACT WITH SAID BODY OF LIQUID, ASCERTAINING THE RESULTANT GAIN IN WEIGHT OF SAID SAMPLE WHEREBY THE EXTENT OF SATURATION BY SAID LIQUID IS DETERMINED, MEASURING THE PERMEABILITY OF SAID SAMPLE TO AIR, INTRODUCING AN ADDITIONAL QUANTITY OF SAID LIQUID INTO SAID SAMPLE AT A SELECTED ABSOLUBLE PRESSURE HIGHER THAN SAID FIRST ABSOLUTE PRESSURE, ASCERTAINING THE EXTENT OF SATURATION OF SAID SAMPLE BY SAID LIQUID BY AGAIN WEIGHING SAID SAMPLE, AGAIN MEASURING THE PERMEABILITY OF OF SAID SAMPLE TO AIR, AND REPEATING SAID LIQUID PENETRATING, WEIGHING, AND AIR PERMEABILITY MEASURING STEPS A NUMBER OF TIMES, SUCCESSIVE LIQUID PENETRATING STEPS BEING MADE AT SUCCESSIVELY INCREASED ABSOLUTE PRESSURES, WHEREBY TO DETERMINE THE RELATIVE PERMEABILITY OF SAID SAMPLE TO AIR AS A FUNCTION OF THE SATURATION OF SAID SAMPLE BY SAID LIQUID
Claim 2
Independent Claim
214 words
A METHOD FOR DETERMINING THE RELATIVE PERMEABILITY OF A ROCK SAMPLE WITH RESPECT TO A WETTING PHASE IN THE PRESENCE OF A NON-WETTING PHASE WHICH COMPRISES PLACING SAID SAMPLE IN CONTACT, AT A SELECTED ABSOLUTE PRESSURE, WITH A BODY OF LIQUID THAT HAS LESS WETTING POWER THAN AIR FOR SAID SAMPLE, MAINTAINING CONTACT BETWEEN SAID LIQUID AND SAID SAMPLE FOR A SUFFICIENT PERIOD OF TIME TO ENABLE SAID LIQUID TO ENTER AT LEAST SOME OF THE PORE SPACE IN SAID SAMPLE, REMOVING SAID SAMPLE FROM CONTACT WITH SAID BODY OF LIQUID, ASCERTAINING THE RESULTANT GAIN IN WEIGHT OF SAID SAMPLE WHEREBY THE EXTENT OF SATURATION BY SAID LIQUID IS DETERMINED, MEASURING THE PERMEABILITY OF SAID SAMPLE TO AIR, INTRODUCING AN ADDITIONAL QUANTITY OF SAID LIQUID INTO SAID SAMPLE AT A SELECTED ABSOLUBLE PRESSURE HIGHER THAN SAID FIRST ABSOLUTE PRESSURE, ASCERTAINING THE EXTENT OF SATURATION OF SAID SAMPLE BY SAID LIQUID BY AGAIN WEIGHING SAID SAMPLE, AGAIN MEASURING THE PERMEABILITY OF OF SAID SAMPLE TO AIR, AND REPEATING SAID LIQUID PENETRATING, WEIGHING, AND AIR PERMEABILITY MEASURING STEPS A NUMBER OF TIMES, SUCCESSIVE LIQUID PENETRATING STEPS BEING MADE AT SUCCESSIVELY INCREASED ABSOLUTE PRESSURES, WHEREBY TO DETERMINE THE RELATIVE PERMEABILITY OF SAID SAMPLE TO AIR AS A FUNCTION OF THE SATURATION OF SAID SAMPLE BY SAID LIQUID
References Cited (Backward Citations)
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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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |