Searched for: contributor:"Barnhoorn, Auke (mentor)"
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document
Abdullah, Muhammad Razin (author)
Hydrocarbon or geothermal reservoir often consists of several rock layers from different lithology. The various lithologies have their own number of mechanical properties and the layering effect introduced the term of mechanical contrast, which represents the ratio of rock strength between adjacent layers. Mechanical contrast and confining...
master thesis 2018
document
Balmer, Marco (author)
Geothermal energy is a relatively sustainable energy source of which the essence is to extract heat from hot subsurface rocks. Circulating fluids serve as the transport agent of heat. The contact area between the fluids and the rocks is where the relevant heat transfer occurs, i.e., where the water is heated up. In some geothermal reservoirs,...
master thesis 2018
document
Chorus, Tijmen (author)
Rapid injectivity decline is frequently observed during injection in unconsolidated sand reservoirs. Field data suggests that hydraulic fracture processes are directly or indirectly related to this injectivity decline. Conventional fracture theories do not apply to unconsolidated sand since this material has little to no cohesion and tensile...
master thesis 2018
document
Al-Mansour, Abdulmohsen (author)
The induced seismic activities and subsidence in the Groningen region urges for deeper investigation of the mechanical elastic parameters and lithological facies. A recently (2015) drilled well in the area of Zeerijp has provided a rich dataset from the Permian and Carboniferous to be analyzed and eventually help to understand and characterize...
master thesis 2018
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Goense, Twan (author)
To develop high enthalpy geothermal systems in the Netherlands, reservoirs with a depth greater than 4000 m need to be targeted. The Lower Carboniferous limestone is proposed as the main target due to its depth and wide occurrence. To investigate the potential of this formation, the physical rock properties are studied in a variety of laboratory...
master thesis 2018
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Regelink, Jaap (author)
A rock fracture is a mechanical break or discontinuity that separates a rock body into two or more parts. The continuity or cohesion of the rock body is lost across a fracture. Fractures are formed in response to stress on a rock. A rock breaks and forms a fracture when the applied stress reaches the rock strength. Vertical fractures improve...
master thesis 2018
document
Honardar, Siavash (author)
The aim of this project is to focus on the effect of mechanical contrast and surface roughness as factors influencing the shear strength of the interface of different rock samples. The shear strength of an interface is significant in experimental projects that for instance address the containment and propagation analysis of hydraulic fractures....
bachelor thesis 2017
document
Guerrero, Joey (author)
Coastal chalk cliff instability is a major issue in the UK’s southern region. In order to further the understanding into what drives and influences chalk cliff collapse, a series of laboratory tests have been done on samples taken from West Melbury Marly Chalk, Seaford Chalk, Newhaven Chalk and Lewes Nodular Chalk. Tests have been done to find...
bachelor thesis 2017
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Imaro, Tulus (author)
This thesis aims at investigating the effect of a thermal shock of a couple of hundred degrees on the creation of the thermal microfractures and in what way the mechanical properties of volcanic rocks change. In the geothermal field, thermal microfractures can contribute to increase the permeability and produce more steam to the surface. We...
master thesis 2017
document
Hinkofer, Thomas (author)
With an increased demand for renewable energy sources, geothermal developments have moved into the spotlight, including sedimentary structures. In the western part of the Netherlands, cretaceous sandstone bodies are already in use for the geothermal energy production. However, these reservoirs are generally producing water at temperatures less...
master thesis 2017
document
Alsafi, Menaf (author)
Geotechnical projects are successful when there is a lot of knowledge about the soil implemented in safe sustainable solutions. Existing models of hydraulic flow in soils need to be tested and confirmed again and again to make sure it’s trustworthy. With the use of three-layered samples containing 1mm and 3mm glass bead sizes a simplified model...
bachelor thesis 2017
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