https://ojs.uni-miskolc.hu/index.php/geosciences <p><big><strong>GEOSCIENCES AND ENGINEERING</strong></big></p> <p><big><strong>HU ISSN 2063-6997</strong><br /><strong>A Publication of the University of Miskolc</strong><br /><strong>UNIVERSITY OF MISKOLC</strong><br /><strong>Faculty of Earth and Environmental Sciences and Engineering<br />Miskolc, University Press<br />Hungary</strong></big></p> Miskolc, University Press en-US Geosciences and Engineering 2063-6997 https://ojs.uni-miskolc.hu/index.php/geosciences/article/view/4549 <div><span lang="EN-US">The study evaluates waste generation from drilling operations, which take place both in land-based zones and in maritime regions. The paper investigates a range of waste management technologies along with methodologies and processes mandatory for every oil field. Specific drilling operation wastes, as well as difficult wastes, are analyzed in this review approach due to production volume or environmental concerns. The study includes real-case analyses, including one conducted by our organization at GPNME (Gazprom Neft Middle East B.V.) oil fields in Kurdistan. The research includes analysis test data of the field impacts located in Kurdistan; the findings highlight the importance of implementing effective waste management practices that not only comply with regulatory standards but also minimize environmental risks. By examining these methodologies, we aim to establish best practices that can be adopted across similar oil fields to enhance sustainability and operational efficiency.</span></div> Khabat M. Ahmed Ali Mohammed Salih Roland Dócs Copyright (c) 2026 Geosciences and Engineering 2026-10-19 2026-10-19 14 2 5 26 https://ojs.uni-miskolc.hu/index.php/geosciences/article/view/4769 <p>This study explores how Computational Fluid Dynamics (CFD) modeling predicts and mitigates safety risks from hydrogen leaks at hydrogen refueling stations (HRS). Three-dimensional simulations were performed using PHAST Standalone 9.1 software to evaluate hydrogen dispersion under wind speeds of 1, 2, and 5 m/s. The results identify critical risk factors and potential gas accumulation zones. Based on the dispersion patterns, this paper proposes strategic locations for safety equipment, including gas, acoustic, and flame detectors. This proactive modeling approach provides valuable design guidelines to enhance facility safety before real-world deployment.</p> Gábor Hasulyó Marianna Vadászi Copyright (c) 2026 Geosciences and Engineering 2026-10-21 2026-10-21 14 2 27 39