№85-8

Modeling of oil production in the deposits of geosoliton type

M. Lubkov¹, https://orcid.org/0009-0009-2440-9824

¹Poltava Gravimetric Observatory of the Subbotin Institute of Geophysics of NAS of Ukraine , Poltava, Ukraine

Coll.res.pap.nat.min.univ. 2026, 85:102–113

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ABSTRACT

Purpose. Investigation of the optimal placement of oil-producing wells in the branches of the geosoliton-type deposit.

The method of investigation. The numerical modeling of the pressure distribution around production wells in heterogeneous isotropic oil-bearing branches (layers) of the geosoliton is carried out using the combined finite-element-difference method.

Results. We have obtained the regularities of pressure distribution in the branches of the geosoliton at different filtration parameters and different locations of the wells.We haveshown that oil infiltration coefficients less than 0.001 m quickly lead to depletion of the layers.The location of the production wells relatively the length of the geosoliton layers under other satisfactory production conditions practically does not affect to the intensity of oil recovery.Wehave established the dominant influence of the permeability of the oil phase in the geosoliton layers on the filtration intensity and, accordingly, oil recovery in the layers, while a permeability coefficient of less than 0.02 D leads to rapid depletion of the geosoliton layers.

The originality. For the first time, on the base of numerical modeling using a combined finite element-difference method, pressure distributions in the branches of the geosoliton were established at different filtration parameters and different well locations.We haveshown that oil infiltration coefficients less than 0.001 m quickly lead to depletion of the layers.The location of the production wells relatively the length of the geosoliton layers at the other satisfactory production conditions has practically no effect on the intensity of oil recovery.

Practical implementation. The obtained results have showed that the permeability of the oil phase in geosoliton layers has a dominant effect on the filtration intensity and, accordingly, on oil recovery of the layers, while a permeability coefficient less than 0.02 D leads to rapid depletion of the geosoliton layers.

Keywords: computer modeling, combined finite-element-difference method, deposit of geosoliton type, oil recovery increasing.

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date of first submission of the article to the publication – 04/10/2026
date of acceptance of the article for publication after review – 05/21/2026
date of publication – 06/30/2026