Geosciences and Engineering

Hybrid model integrating predictive analytics and environmental adaptation

2025-08-29T12:11:57+02:00

The research investigates industrial maintenance strategies in the oil and gas sector and proposes a hybrid model that adapts maintenance schedules based on real-time environmental data. Comparative analysis shows that traditional strategies either cause inefficiencies or incur high failure risks. The hybrid approach integrates predictive analytics with environmental inputs such as corrosion and weather conditions. Simulations demonstrate a 15% reduction in failure rates and annual cost savings of up to $15 million per facility. The model enhances operational resilience, optimizes resource use, and aligns with the industry's transition toward safer and more sustainable practices.

Optimization of petrophysical laboratory measurements

2025-09-05T09:10:31+02:00

Although petrophysical measurements in today’s hydrocarbon industry are highly advanced and well-established, there remains considerable room for optimization, particularly in laboratory measurement techniques. While data acquisition methods in the field generally provide reliable and consistent results, the laboratory-based analysis of core and fluid samples often face challenges related to measurement precision, standardization, and efficiency. Factors such as sample handling, preparation procedures, and the limitations of traditional experimental setups can introduce uncertainties that impact reservoir evaluation. By refining laboratory protocols, adopting advanced instrumentation, and integrating modern analytical methods, the accuracy and reproducibility of petrophysical laboratory measurements can be significantly improved, ultimately leading to better reservoir characterization and more effective resource management.

In this context, the measurement procedures carried out at the Petrophysical Laboratory of the Institute of Applied Earth Sciences, University of Miskolc, were examined with the aim of optimizing both the measurement methodology and the evaluation methods.

Hydrological causes and consequences of the water inrush into the Praid Salt Mine, Transylvania, Romania

2025-09-04T12:31:39+02:00

The Praid salt mine, Romania was flooded by the Corund Creek in May 2025, which changed the hydrodynamic and environmental conditions of the site. To provide an overview of the situation, we discuss the geological processes forming the salt diapir, highlighting its hydrogeological aspects. We also present the previous mining activities, and the most probable process of the water intrusion into the mine areas. Since a new situation arose as a result of the inrush of water, we analyze the hydrodynamic processes of the recent (flooded) state and we give an outline of future possibilities.

Some aspects of the radio-magnetotelluric method and instrumentation development

2025-06-16T13:08:06+02:00

In recent decades, the demand for shallow geophysical methods and instruments has changed significantly. Today, there is only a need for methods and instruments that can provide a large amount of accurate measurement results in a short time, which are suitable for developing effective inversion procedures. Only contactless methods can meet the speed requirement. The measurement technique is significantly simplified if we can use a signal source that is of natural origin or an artificial source created for other purposes (e.g. radio transmitters). The radio-magnetotelluric method (RMT), which can be considered an extended variation of the popular very low frequency (VLF) method in terms of frequency range, is exactly such a method. Another advantage is that the created field can be considered a plane wave, thus simplifying the data processing and interpretation procedures. This study presents a brief history of the development of VLF-RMT methods, the evolution of instruments, the development of processing methods, the characteristics of modern inversion methods, and then summarizes the aspects of designing a modern RMT instrument.

Influence of injection rate on wormhole morphology in matrix acidizing using carbonic acid

2025-11-27T08:09:18+01:00

This study examines the effect of varying injection rates on wormhole formation during matrix acidizing using a carbonic acid solution (30% CO₂ + 70% deionized water). Injection rates of 0.2, 0.5, and 1 cm³/min were tested, and the resulting wormhole structures were visualized using CT scanning. Results show that lower injection rates produce single, more efficient wormholes with minimal branching, while higher rates generate more branched, less efficient structures. Optimizing the injection rate is key to achieving effective wormhole formation, which can enhance flow in carbonate reservoirs.

Assessing flash flood control using Universal Risk Matrix

2025-11-18T14:24:15+01:00

Flash floods have a significant impact on both natural and economic environments, making it essential to analyze their causes and develop mitigation strategies. This study evaluated flood mitigation in a selected area using a risk map created through the application of a risk assessment framework (RAF) and also the Analytical Hierarchy Process (AHP) method, while risk levels were assessed with the Universal Matrix of Risk Analysis (UMRA). No similar mapping approach and risk assessment had been used in the region before. On the result map identified the Cseres Valley as a high-risk area. Analysis showed that implementing the proposed mitigation measures could reduce the negative effects of flash floods by about 65%, demonstrating the potential effectiveness of targeted flood protection strategies.

Comparison of truss bridge structures designed for conveyor belt systems

2025-11-26T13:52:57+01:00

In open-pit mines, the installation of conveyor belt tracks may require conveyor bridges to span the terrain or existing structures. The paper compares the structural design options for truss bridge structures, with a particular focus on existing, recycled structures and prefabricated, modular elements. Three-dimensional finite element simulations were used to verify the first option, which is an existing structure meant for reuse to look at the natural frequencies, stress distributions, and deformed shapes. These results highlight the importance of investigating the vibrations caused by the movement of the conveyor belt and the wear of the rollers. The other option examined is a commercial solution based on a Bailey bridge, which is a portable, prefabricated, modular truss bridge designed for quick assembly without heavy equipment. The advantage of the modular design is that the structure can be reinforced by combining the elements, thereby increasing operational safety and economy.