Abstract
The paper describes the results in identifying the prevalent directions of elongated quartz grains being the major oil-producing layer component in sand reservoirs. Studying the orientation of quartz to its grain shapes in paleogeographical oriented core samples made it possible to identify the hydrodynamic reservoir regimes and facies type. The spatial confinement of pore spaces and cataclasis fractures in grain material to the prevalent elongated quartz grain directions was defined.
Highlights
Kazan oil-gas-condensate field is located in the central east of Western Siberia lowland within Tomsk Oblast
The general core sample interpretation embraced more than 130 meters
The standard orientation method for viscous components was applied in determining the orientation of the core sample itself
Summary
Kazan oil-gas-condensate field is located in the central east of Western Siberia lowland within Tomsk Oblast. 2. Research methods The research target includes core samples from oil-producing rocks of U1 layer, Kazan field wells. Base rock-forming components in investigated terrigenous reservoirs, were measured in preliminary prepared oriented thin sections. Morphological analysis included the measurement of elongated grains in oriented thin sections relevant to specified direction (paleogeographic north pole). This involved the measurement of strike azimuth of elongated quartz grains.
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