US2995027A
Expired / Lapsed
US
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Process for determining the wettability of reservoir rocks
Assignee: Pure Oil Co
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Filing: 1957-08-05
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Granted: 1961-08-08
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Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
- 👤 Orrin C Holbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:34
CPC Classifications
G; G01; G01N; G01N13/00; G01N15/00; G01N15/08; G01N15/088; G01N15/0893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF DETERMINING RELATIVE OIL-WETTABILITY AND WATER-WETTABILITY OF SUBTERRANEAN PETROLEUM ROCK RESERVOIRS COMPRISING INTIMATELY CONTACTING A SPECIMEN OF SAID ROCK WITH A KNOWN QUANTITY OF AQUEOUS SOLUTION OF WATER-SOLUBLE ADSORBATE CAPABLE OF BEING ADSORBED BY SAID ROCK, DETERMINING THE AMOUNT OF ADSORBATE ADSORBED, CONTACTING SAID SPECIMEN WITH A KNOWN QUANTITY OF A MINERAL OIL SOLUTION OF AN OIL-SOLUBLE ADSORBATE HAVING SUBSTANTIALLY THE SAME ADSORPTIVE CHARACTERISTICS AS SAID FIRST MENTIONED ADSORBATE AND DETERMINING THE AMOUNT OF ADSORBATE ADSORBED, AND COMPARING THE AMOUNT OF ADSORBATE ADSORBED FROM THE AQUEOUS AND OIL SOLUTIONS.
Claim 2
Independent Claim
91 words
THE METHOD OF DETERMINING RELATIVE OIL-WETTABILITY AND WATER-WETTABILITY OF SUBTERRANEAN PETROLEUM ROCK RESERVOIRS COMPRISING INTIMATELY CONTACTING A SPECIMEN OF SAID ROCK WITH A KNOWN QUANTITY OF AQUEOUS SOLUTION OF WATER-SOLUBLE ADSORBATE CAPABLE OF BEING ADSORBED BY SAID ROCK, DETERMINING THE AMOUNT OF ADSORBATE ADSORBED, CONTACTING SAID SPECIMEN WITH A KNOWN QUANTITY OF A MINERAL OIL SOLUTION OF AN OIL-SOLUBLE ADSORBATE HAVING SUBSTANTIALLY THE SAME ADSORPTIVE CHARACTERISTICS AS SAID FIRST MENTIONED ADSORBATE AND DETERMINING THE AMOUNT OF ADSORBATE ADSORBED, AND COMPARING THE AMOUNT OF ADSORBATE ADSORBED FROM THE AQUEOUS AND OIL SOLUTIONS.
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |