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

Study of petrophysical and dynamic properties of non-hydrophilic reservoirs in the Perm region

UDC: 550.822.3:622.276.031.011.43
DOI: -

Authors:

¹ LUKOIL-Engineering LLC, Perm, Russia

Keywords: wettability, surface properties restoration, residual water saturation factor, oil recovery factor, relative permeability

Annotation:

Rock porous surface wettability influences on many oil and gas reservoirs characteristics. Industrial and state standards, being in force in our country, that control carrying out core laboratory investigations, require core samples extraction in the course of their preparation for experiments that results in hydrophylization of initially non-hydrophilic rocks. Neglecting the rock wettability may result in laboratory data distortion.

The authors of the article present results of petrophysical and dynamic characteristics determination of the Famennian productive deposits of two oil fields in the Perm Region taking into account the rocks surface properties. Core samples wettability before and after extraction was studied, capillary measurements in "gas–water" and "oil–water" systems and special core analyses with core aging procedure were performed, oil recovery factors and relative oil and water permeabilities were measured on core samples with restored wettability, petrophysical dependences were obtained.

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