РОЗРОБКА ТА ОБГРУНТУВАННЯ ТЕХНІЧНИХ РІШЕНЬ З ГІДРОДИНАМІЧНОЇ ОБРОБКИ ГІДРОГЕОЛОГІЧНИХ СВЕРДЛОВИН

• Datum: 2025
• Hauptverfasser: Коровяка, Є.А., Пащенко, O.A., Расцвєтаєв, В.О., Рибак, A.B.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины 2025
• Schlagworte: гідродинамічна обробка; гідрогеологічні свердловини; свердловина; підвищення проникності; імпульси тиску; конструкція насадок; обчислювальна гідродинаміка; продуктивність свердловин; управління водоносними горизонтами; стійкий видобуток води
• Online Zugang: http://altis-ism.org.ua/index.php/ALTIS/article/view/458
• Назва журналу: Tooling materials science

This study presents the development, optimization, and validation of an innovative hydrodynamic treatment device aimed at significantly enhancing the productivity of hydrogeological wells through targeted stimulation of the near-wellbore zone. The core objective is to improve hydraulic conductivity and reduce formation damage caused by mineral incrustations, biofouling, and fine particle accumulation. The device comprises a high-pressure pumping unit, a pulse generator, a delivery conduit system, and an adjustable nozzle head configured to generate controlled pressure pulses within a range of 5–20 MPa and frequencies between 1 and 10 Hz. These pulses effectively induce elastic deformation and micro-fracturing in the geological matrix, facilitating the removal of obstructions and restoration of permeability. A comprehensive methodological framework was employed, incorporating analytical modeling, computational fluid dynamics (CFD) simulations, and empirical validation through laboratory and in-situ experiments. Optimal operational parameters were identified as a pressure of 12 MPa, pulse frequency of 5 Hz, pulse duration of 0.5 seconds, and a specially engineered convergent-divergent nozzle geometry. Laboratory results revealed a 28% increase in flow rate (from 10 m³/h to 12.8 m3/h), while field trials conducted in both karstic and unconsolidated sandy aquifers demonstrated flow rate improvements of 20–35%, along with a significant 40% reduction in near-wellbore resistance (skin factor decreased from 5.2 to 3.1). The system’s modular and scalable design allows for integration in wells with diameters ranging from 100 to 300 mm and varying permeability conditions (0.05–10 Darcy), ensuring broad applicability. Furthermore, compared to conventional mechanical or chemical stimulation techniques, the proposed solution offers enhanced environmental sustainability, reduced ecological footprint, and approximately 20% lower operational expenditures. These findings contribute to the advancement of cost-effective, energy-efficient water extraction technologies and offer a practical framework for future adaptation in complex hydrogeological environments. Prospective research directions include long-term performance monitoring, application in fractured bedrock systems, and hybridization with other well rehabilitation techniques.