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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2025

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Developing a gas-dynamic model of an underground gas storage facility

Volovetskyi V. B., Bugai A. O., Levin O. A., Serediuk M. D., Romanyshyn Y. L., Shchyrba O. M.

Journal of Achievements in Materials and Manufacturing Engineering

2025

Vol. 128, nr 1

18--32

Purpose: The aim of the study is to create a gas-dynamic model of the Dashava underground gas storage (UGS) facility. It studies reservoir properties and well operation parameters during underground gas storage facility (UGSF) operation in the seasons of withdrawal and production. Design/methodology/approach: The research methodology comprehensively examines the findings from geophysical, seismic, and gas-dynamic investigations. It also encompasses data on well design, operational indicators, and the primary parameters associated with the underground storage facility’s operational performance during its operational lifespan. Additionally, geological and gas-dynamic models are created. The geological model will be refined by adapting its filtration and capacitance characteristics to align with the actual gas-dynamic parameters of cyclic operation. Additionally, a gas-dynamic model will be developed and adapted to align with the calculated reservoir pressures in the wells and the actual reservoir pressure in the actively drained zone. Findings: The reservoir and operational parameters of the gas storage wells were analysed, and gas-dynamic calculations were performed using the Petrel software package. The Petrel software package was used to build a 3D geological model of the Dashava structure for the gas-bearing horizons ND-8 (XIV) and ND-9 (XV), and the physical properties of gas reservoir rocks were substantiated. A gas-dynamic model was developed and adapted by comparing the main indicators of the gas storage facility between the calculated and actual values of the Dashava UGSF. Based on the results obtained, it was found out that the discrepancy between the average calculated and actual pressure values is minimal. The developed gas-dynamic model provides forecasting of the main indicators of the gas storage facility with a reliability of more than 90%, which indicates the feasibility of using the model for approximate calculations of the predictive mode of operation of the Dashava UGSF. Practical implications: The studies performed by means of gas-dynamic modelling of UGS facilities allow for a more thorough approach to the study of the reservoir system of gas storage facilities and promptly perform forecasting of the main indicators of its operation during gas withdrawal and production. Originality/value: The application of the developed gas-dynamic model of the UGS facility will provide an opportunity to quickly analyse the main indicators of its work to solve problematic issues in a timely manner.