Abstracts Archive

In recent decades, it has become increasingly evident that various human activities, including water waste injection, hydraulic fracturing, and geothermal energy production, can contribute to seismic events. To effectively mitigate the risks associated with induced seismicity, it is crucial to compr...

Rising demand for energy and green energy has led to increasing subsurface activities, such as geothermal energy sites. These increasing human activities in the subsurface have caused substantial induced earthquakes in more densely populated areas, increasing the risks of operating safely. Well-know...

A range of different geoenergy technologies require the injection or extraction of fluids into or out of the near subsurface (0 – 5000m). In some of these contexts, such as deep geothermal, the propagation of fractures is intentional to enhance permeability and well productivity, but the process m...

Early detection of rockburst risk areas is a prerequisite for ensuring safe production in coal mines. A reliable and efficient detection method is essential for identifying stress distribution and disturbances in coal and rock masses during mining. In this study, we employed seis...

Parametric analysis of laboratory Acoustic Emission (AE) during rock deformation laboratory experiments has revealed periodic trends and precursory behaviour of the rupture source, as crack damage nucleates, it grows and coalesces into a fault zone. Due to the heterogeneity of rocks and the differen...

The Dinantian carbonate reservoir (DCR) is a proven geothermal play in Northwest Europe. In the UK, evidence points towards it being an important thermal spring source and a major aquifer in many basins. In the Midlands region, the carbonates have been buried to below 4000 m while they are below 200...

Rock salt formations are important candidates for radioactive waste disposal. The disposal concept of rock salt is based on the creation of galleries and boreholes to store the radioactive waste. These will subsequently be backfilled with crushed rock salt, which will converge and compact over time....

The rocks forming a volcanic edifice or dome are typically saturated or partially- saturated with water. However, most experiments aimed at better understanding the mechanical behaviour of volcanic rocks have been performed on dry samples, and therefore most large-scale models designed to explore vo...

Discontinuities, including fractures and joint sets, modify the fluid transport properties and strength of rock masses. While open fractures and joints increase rock mass permeability and decrease rock mass strength, fluid flow within these structures can result in secondary mineral precipitation th...

Porous reservoir rocks like sandstones have gained utmost important in the last decade as a potential sink for CO2. Most of the targeted reservoirs are depleted oil and gas fields, which has caprocks to ensure the containment of the injected CO2. Injecting CO2 into porous reservoirs increase the por...

In this study, we present experimental investigations on a low-porosity bioclastic calcarenite from the Cotiella Basin in the Spanish Pyrenees. Our objective is to elucidate the dominant failure mechanisms during the laboratory reactivation of natural deformation bands oriented at various angles to ...

Damage zones commonly exist alongside crustal faults, where a combination of micro- and macrocracks form intricate pathways for fluid flow. The permeability of these zones can exhibit rapid changes as the crack network evolves over time and space. Accurate measurements of permeability under high pre...

Characterizing the physical and mechanical properties of fractured porous rocks and their interactions with the injected fluid at representative geo-reservoir conditions is crucial to assess the feasibility of any geothermal system and to minimize the risks (particularly the induced seismicity) asso...

Fluid extraction from geological formations for purposes of subsurface utilization leads to a pore pressure drop in reservoirs and potentially to compaction and seismicity. The geomechanical behaviour, and thus production-related compaction, of siliciclastic reservoirs is governed by the composition...

Geometrical heterogeneity and variation of mechanical properties along and across active fault zones may affect the seismicity of such faults. Additionally, the nature of host-rocks juxtaposed by the fault representing lithological units of distinct mechanical property plays a key role in controllin...