Reservoirs typification as a means of improving the permeability determining accuracy

Authors: R.A. Rezvanov, O.A. Smirnov (PANGEYA ZAO, RF, Moscow)

Key words: reservoir, permeability, porosity, residual water saturation.

On the example of a collection of samples on two objects of different ages the possibility of improving the accuracy of determining the permeability of soils due to their pre-typification is tested, reasoning from the known values ​​of the factors of porosity and residual water saturation.

The use of individual trends for the sel ected classes in conjunction with the preliminary determining the class, to which the object under consideration (the layer, the sample) is belonged, reasoning from the values of porosity and residual water saturation, can significantly improve the accuracy of the permeability determination compared to the use dependencies of permeability on porosity or residual water saturation, which are built as a whole for the entire laboratory data array.

References

1. Bucles R.T., Correlating and averaging connate water saturation data, Journal of Canadian Petroleum Technology, V. 9, no. 1, pp. 42-52.

2. Holmes M., Holmes D., Holmes A., Relation between porosity and: methodology to distinguish mobile fr om capillary bound water, AAPG Annual Convention, Denver, Colorado, 2009, June 7-10.

3. Morris R.L., Biggs W.P., Using log-derived values of water saturation and porosity, Transactions of the SPWLA 8th Annual Logging Symposium, Paper X, 1967, 26 p.

Key words: reservoir, permeability, porosity, residual water saturation.

On the example of a collection of samples on two objects of different ages the possibility of improving the accuracy of determining the permeability of soils due to their pre-typification is tested, reasoning from the known values ​​of the factors of porosity and residual water saturation.

The use of individual trends for the sel ected classes in conjunction with the preliminary determining the class, to which the object under consideration (the layer, the sample) is belonged, reasoning from the values of porosity and residual water saturation, can significantly improve the accuracy of the permeability determination compared to the use dependencies of permeability on porosity or residual water saturation, which are built as a whole for the entire laboratory data array.

References

1. Bucles R.T., Correlating and averaging connate water saturation data, Journal of Canadian Petroleum Technology, V. 9, no. 1, pp. 42-52.

2. Holmes M., Holmes D., Holmes A., Relation between porosity and: methodology to distinguish mobile fr om capillary bound water, AAPG Annual Convention, Denver, Colorado, 2009, June 7-10.

3. Morris R.L., Biggs W.P., Using log-derived values of water saturation and porosity, Transactions of the SPWLA 8th Annual Logging Symposium, Paper X, 1967, 26 p.


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