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Estimation of displacement efficiency for Devonian formations based on the results of specialized well tests

I.M. Indrupskiy, K.V. Kovalenko, D.M. Gazizova, A.F. Sibgatullin, D.P. Anikeev, N.V. Shabalin, K.R. Sadeev, A.A. Lutfullin

Original article

DOI https://doi.org/10.18599/grs.2023.2.17

236-244
rus.

open access

Under a Creative Commons license

The displacement efficiency and residual oil saturation are the most important characteristics determining the recoverable volumes of oil and the waterflooding efficiency. The main data about these parameters are provided by laboratory core studies. Specialized field tests make it possible to evaluate the same characteristics in-situ, directly on a well, thus excluding the influence of scale effect and impact of core sampling and preparation.

This paper presents the results of a field study to evaluate the displacement efficiency and residual oil saturation on a well draining terrigenous Devonian formations on one of the areas of the Romashkinskoye field. The results are compared with generalized dependencies based on core data. Significant influence of the scale effect (the effect of sweep multiplicity) on the estimated parameter values was noted, which indicates the need to supplement laboratory experiments with specialized field studies.
 

 

displacement efficiency, residual oil saturation, field study, well logging, well tests, pulsed neutron logging, scale effect

 

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Ilya M. Indrupskiy – Dr. Sci. (Engineering), Head of the Laboratory, Oil and Gas Research Institute of the Russian Academy of Sciences
3, Gubkin st., Moscow, 119333, Russian Federation
e-mail: i-ind@ipng.ru

Kazimir V. Kovalenko – Dr. Sci. (Geology and Mineralogy), Leading Researcher, Oil and Gas Research Institute of the Russian Academy of Sciences
3, Gubkin st., Moscow, 119333, Russian Federation

Dilyara M. Gazizova – Master student, Almetyevsk State Oil Institute
2, Lenin st., Almetyevsk, 423450, Russian Federation

Almaz F. Sibgatullin – Master student, Almetyevsk State Oil Institute
2, Lenin st., Almetyevsk, 423450, Russian Federation

Daniil P. Anikeev – Cand. Sci. (Engineering), Senior Researcher, Head of Laboratory, Oil and Gas Research Institute of the Russian Academy of Sciences
3, Gubkin st., Moscow, 119333, Russian Federation

Nikita V. Shabalin – Master student, Almetyevsk State Oil Institute
2, Lenin st., Almetyevsk, 423450, Russian Federation

Kamil R. Sadeev – Head of the Group of the Field Development Department, Tatneft Dobycha SP Tatneft PJSC
75, Lenin st., Almetyevsk, 423450, Russian Federation

Azat A. Lutfullin – Cand. Sci. (Engineering), Deputy Head of the Department of Field Development, Tatneft Dobycha SP Tatneft PJSC
75, Lenin st., Almetyevsk, 423450, Russian Federation

 

For citation:

Indrupskiy I.M., Kovalenko K.V., Gazizova D.M., Sibgatullin A.F., Anikeev D.P., Shabalin N.V., Sadeev K.R., Lutfullin A.A. (2023). Estimation of displacement efficiency for Devonian formations based on the results of specialized well tests Georesursy = Georesources, 25(2), pp. 236–244. https://doi.org/10.18599/grs.2023.2.17