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Statistical Well Log Analysis of the Bazhenov FormationNormal access

Authors: P.S. Kulyapin and T.F. Sokolova
Journal name: Seismic Technology
Issue: Vol 10, No 3, July 2013 pp. 1 - 24
DOI: 10.3997/2405-7495.2015057
Language: English
Info: Article, PDF ( 5.64Mb )
Price: € 30

The statistical log analysis has been applied to study the multimineral composition and porosity of the Bazhenov unconventional play. Effective and secondary porosities, as well as net thicknesses, were evaluated using the well-log interpretation workflow designed at the Well Logging Department of Gubkin Russian State University of Oil and Gas. The advantages, limitations and drawbacks of the suggested approach are discussed and illustrated with case studies for several fields located in the Krasnoleninsky and Surgut arches of the West Siberian basin. Secondary porosity (fractured/vuggy zones) has been analysed from shear wave splitting effects. Additionally, the mechanical and elastic properties of the Bazhenov shale have been analysed using well logs, in order to identify the most brittle rocks in the formation, considered as the most favourable for fracking and completion.

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