«Geology, geophysics and development of oil and gas fields»

Oil saturation analysis of productive formations applying the pickett diagram method in carbonate reservoirs

UDC: 550.83.05
DOI: 10.33285/2413-5011-2022-6(366)-41-45

Authors:

¹ Northern (Arctic) Federal University named after M.V. Lomonosov, Arkhangelsk, Russia

Keywords: oil saturation, Pickett diagram, permeability, effective porosity, water cut

Annotation:

The method of interpreting primary geophysical data applying the plotting of Pickett diagrams allows quickly differing whether a reservoir possesses good reservoir properties and high oil saturation or is non-productive. The article shows the principles of plotting Pitckett diagrams for determining the oil saturation of a reservoir based on porosity, permeability and resistivity data of a formation. The use of the above-mentioned characteristics makes it possible to determine the filtration layers and reservoirs of oil.

In the course of the work, the data on the Ardalin and Dyusushevskiy oil fields are presented and interpreted. The heterogeneity of the reservoir by rock types and porosity can lead to some deviations from the general trends in the diagrams, but, in general, the method allows for a consistent qualitative interpretation. The importance of high reliability of the used geophysical data is also noted.

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