Method to evaluate the R.sub.wb parameter of the dual water log

Details Method to evaluate the R.sub.wb parameter of the dual water log Method to evaluate the R.sub.wb parameter of the dual water log

1991-01-29

1995-03-07

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Geochemical, geological, or geothermal exploration

436 29, 436 31, 436 40, G01N 3300

Patent

active

053957687

ABSTRACT:
A method is described to evaluate the R.sub.wb parameter, which can be applied to the Dual Water log interpretation model by measuring the resistivity of initial brines and of filtrates from muds prepared with shales. The method allows a more precise evaluation of the R.sub.wb parameter and eventually the reservoir porosity as well as the hydrocarbon storage capacity of a given reservoir.

REFERENCES:
patent: 4495292 (1985-01-01), Siebert et al.
patent: 4904603 (1990-02-01), Jones et al.
C. Clavier et al.: "The Theoretical and Experimental Bases for the Dual Water Model for the Interpretation of Shaly Sands", issued in the SPE Paper 6859 (1977).
Paul E. Worthington: "The Evolution of Shaly-Sand Concepts in Reservoir Evaluation", issued in the Log Analyst, pp. 23-40, Jan.-Feb. 1985.
George V. Chilingar et al.: "Chemistry of Interstitial Solutions in Shales Versus that in Associated Sandstones", SPE Paper 2527 (1969).

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