Recovery of wettability of core samples in preparation to penetration tests

Authors: D.N. Mezentsev, E.V. Tupitsin, T.I. Ledovskaya, S.K. Shumskaya, Yu.A. Schemelinin (TomskNIPIneft JSC, RF, Tomsk)

Key words: wettability, core, oil, water, lab test.

In the present work the results of comprehensive analysis on estimation of wettability using the samples of Jurassic deposition of terrigenous profile of oil deposit are presented. Changes in wettability were estimated by two well-known Tulbovich and Amott methods with extracted samples. The influence of wettability on relative permeability to phase was investigated. As a result of the investigations remarkable change in wettability coefficient has been shown to occur during the first 24 hours. The increase in curing time in stratal conditions does not effect on wettability coefficient and permeability to phase.

References

References

1. Amyx, J.W., Bass, D.M., Whiting, R.L., Petroleum reservoir engineering: Physical properties, New York: McGraw-Hill, 1960.

2. Pirson S. J., Oil reservoir engineering, McGraw-Hill, New York, 1958.

3. Craig F.F., The reservoir engineering aspects of waterflooding, Dallas: SPIofAIME, 1971, 244 p.

4. Anderson W.G., Wettability literature survey, Part 5: The effects of wettability on relative permeability, SPE JPT, 1987, V. 39, pp. 1453-1468.

5. Tiab D.; Donaldson E. C., Petrophysics: theory and practice of measuring reservoir rock and fluid transport properties, 3rd ed., Oxford: Gulf Professional Pub., 1996.

Key words: wettability, core, oil, water, lab test.

In the present work the results of comprehensive analysis on estimation of wettability using the samples of Jurassic deposition of terrigenous profile of oil deposit are presented. Changes in wettability were estimated by two well-known Tulbovich and Amott methods with extracted samples. The influence of wettability on relative permeability to phase was investigated. As a result of the investigations remarkable change in wettability coefficient has been shown to occur during the first 24 hours. The increase in curing time in stratal conditions does not effect on wettability coefficient and permeability to phase.

References

References

1. Amyx, J.W., Bass, D.M., Whiting, R.L., Petroleum reservoir engineering: Physical properties, New York: McGraw-Hill, 1960.

2. Pirson S. J., Oil reservoir engineering, McGraw-Hill, New York, 1958.

3. Craig F.F., The reservoir engineering aspects of waterflooding, Dallas: SPIofAIME, 1971, 244 p.

4. Anderson W.G., Wettability literature survey, Part 5: The effects of wettability on relative permeability, SPE JPT, 1987, V. 39, pp. 1453-1468.

5. Tiab D.; Donaldson E. C., Petrophysics: theory and practice of measuring reservoir rock and fluid transport properties, 3rd ed., Oxford: Gulf Professional Pub., 1996.


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