Improving the development process of two hydrodynamically isolated layers with different permeabilities under joint development conditions using a single well grid

Authors

DOI:

https://doi.org/10.15587/2706-5448.2026.363907

Keywords:

field, modeling, permeability, gas recovery coefficient, layer pressure, gas flow rate, impermeable membrane

Abstract

The object of research is the filtration processes observed in the process of joint development of two hydrodynamically isolated different permeability layers by a single well grid. The subject of research is the interaction of different permeability, hydrodynamically isolated layers (upper low permeability k1 and lower high permeability k2) in the process of development of a two-layer deposit in the presence of an impermeable membrane between the layers.

The research solved the problem of the influence of the permeability ratio on the final values of gas flow rates, layer pressure, gas recovery coefficients and the duration of the deposit development.

The work is aimed at studying the features of gas recovery from two different permeability layers with an impermeable membrane, which are developed by a single well grid.

During the research, the influence of the permeability ratio of the layers (n = k2/k1) of the two-layer deposit on the final gas recovery coefficient was determined. It was established that with an increase in the value of n, the high permeability layer is depleted more intensively and is disconnected from development faster. Thus, at the final stage of development for n = 10 in a high-permeability layer, the layer pressure is 3.00 MPa, and in a low-permeability layer – 4.77 MPa. The gas recovery coefficient for a low-permeability layer for n = 10 is only 83.94%, and for a high-permeability layer – 90.11%. Increasing gas recovery can be achieved by transferring wells to simultaneous-separate operation at a certain stage of development, by carrying out treatments of bottomhole zones of low-permeability layers.

The results obtained can be effectively used in the joint development of two hydrodynamically isolated different-permeability layers with joint development by a single well grid. This allows to increase the gas recovery coefficient and the efficiency of further development of two different-permeability layers with an impermeable membrane.

Author Biographies

Roman Kondrat, Ivano-Frankivsk National Technical University of Oil and Gas

Doctor of Technical Sciences, Professor

Department of Petroleum Production

Liliia Matiishyn, Ivano-Frankivsk National Technical University of Oil and Gas

Candidate of Technical Sciences, Associate Professor, Head of Department

Department of Petroleum Production

References

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Improving the development process of two hydrodynamically isolated layers with different permeabilities under joint development conditions using a single well grid

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Published

2026-06-16

How to Cite

Kondrat, R., & Matiishyn, L. (2026). Improving the development process of two hydrodynamically isolated layers with different permeabilities under joint development conditions using a single well grid. Technology Audit and Production Reserves, 3(1(89), 34–42. https://doi.org/10.15587/2706-5448.2026.363907

Issue

Vol. 3 No. 1(89) (2026): Industrial and technology systems

Section

Technology and System of Power Supply

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Copyright (c) 2026 Roman Kondrat, Liliia Matiishyn

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