Abstract

The article describes the process of selecting a rock physics model for the oil-saturated PK1 reservoir of the pokur formation, based on the data of the core description and thin sections. The input parameters of the model based on the representation of the texture of the studied sediments are specified: the calculation of porosity, provided the contribution of laminated clay volume on the Thomas-Stieber pallet, and the actualization of the volumetric model of sediments. The results of rock physics modeling of P-wave, S-wave velocities and density by various theoretical models are analyzed, based on the likelihood of the standard deviation between the modeled and measured curves. The result of the rock physics modeling is demonstrated, which makes it possible to obtain a confident separation by lithology and saturation in the field of elastic parameters according to well logging data, which provides a basis for carrying out a synchronous inversion according to seismic data.

Key words:

rock physics modeling, elastic parameters, theoretical model

References

Gary Mavko, Tapan Mukerji, Jack Dvorkin The Rock Physics Handbook: Cambridge University Press. Second Edition, 2009

Jun Yan Effects of pore aspect ratios on velocity prediction from well-log data: Geophysical Prospecting,2002,50,289-300

Backus G. E. (1962) Long-wave anisotropy produced by horizontal layering: J. Geophys. Res., 66, 4427-4440.

Xu, S. and White, R. E. (1995) A new velocity model for clay-sand mixtures: Geophysical Prospecting, 43, 91-118

Thomas, E & S.Stieber. 1975 The distribution of shale in sandstones and its effect upon porosity: In SPWLA 16th Annual Logging Symposium

Rob Simm Practical Gassmann fluid substitution in sand/shale sequences: fist break volume25, December 2007

Authors

Yu.V. Shilova, Sector manager of the department GRR-Uvat, LLC «Tyumen Petroleum Research Center»
42, M. Gorky st., Tyumen, 625002, Russian Federation
E-mail: yvshilova@ tnnc.rosneft.ru

E.A. Maklakov, Manager of the department GRR-Uvat, LLC «Tyumen Petroleum Research Center»
42, M. Gorky st., Tyumen, 625002, Russian Federation
E-mail: eamaklakov@ tnnc.rosneft.ru

For citation:

Yu.V. Shilova, E.A. Maklakov Vybor petrouprugoj modeli dlja plastov pokurskoj svity na mestorozhdenii Uvatskogo proekta [Selection of a petroelastic model (a rock physics model) for the pokur formation in the Uvat project]. Neftyanaya Provintsiya, No. 4(24), 2020. pp.90-106. DOI https://doi.org/10.25689/NP.2020.4.90-106 (in Russian)