Searched for: contributor%3A%22Fokkema%2C+J.T.+%28promotor%29%22
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Bensdorp, S. (author)
In petroleum production and exploration, having good information about a hydrocarbon reservoir is paramount to successful exploitation. A popular tool is to probe the electric conductivity in a well to obtain direct information of the well surrounding. As wells are nowadays mostly horizontally drilled, this information is becoming more important...
doctoral thesis 2015
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Hjelle, Ø. (author)
doctoral thesis 2014
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Panea, I. (author)
doctoral thesis 2007
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Filippidou, N. (author)
Abstract not available
doctoral thesis 2006
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Toxopeus, G. (author)
An optimal use of shared-earth modeling is hampered by the fact that simulating a migrated image that can be compared directly to the real migrated image is time-consuming. The key to enable iterative testing of different geological scenarios is to filter a shared-earth model by a spatial resolution filter to simulate a migrated image. The...
doctoral thesis 2006
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Chao, G.E. (author)
doctoral thesis 2005
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Henry, F. (author)
The success of the fracturing process in the oil and gas industry depends on our ability to define the hydraulic fracture geometry. To have a method of measurement for characterizing completely the fracture dimensions from a single well in reliable way, will be a primordial importance, in term of economical cost and better oil recovery. This...
doctoral thesis 2005
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Jocker, J. (author)
The influence of small- and large-scale heterogeneities on an incident wavefield was investigated in ultrasonic experiments. The field generated by conventional piezoelectric transducers was investigated separately. It was confirmed that the far-field diffraction was correctly predicted by Fraunhofer theory, but that the near-field diffraction...
doctoral thesis 2005
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Gorriti, A.G. (author)
In the soil sciences it is of great relevance to accurately determine the electromagnetic properties of the soils, specially the complex permittivity. But in the high frequency regime (relevant band for geophysical applications) accurate permittivity measurements are complicated as the relation of the measured quantities with the permittivity...
doctoral thesis 2004
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Tigrek, S. (author)
Stress and strain are two important rheological parameters that have impacts on basin development and dynamics. The dynamic evolution of a basin depends on the spatial and temporal changes in the stresses. How to determine the reference state of stress within a sedimentary basin and the magnitude of the forces at the plate boundaries, which...
doctoral thesis 2004
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Poot, H. (author)
During the last decades many different seismic inversion algorithms have been developed. Since the problem to be solved is non-linear and does not have a unique solution, every method makes use of its own approximations and assumptions. As a step towards a new approach to the inversion of seismic data we have designed and partly implemented a...
doctoral thesis 2004
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Van Zanen, L.F. (author)
Geophysical exploration measurements are used to obtain an image of the geological structures of the subsurface, as detailed as possible. To this end, a wavefield is generated by a seismic source. This wavefield propagates through the subsurface, and will partly reflect on boundaries between layers with contrasting properties, and it will partly...
doctoral thesis 2004
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Mulders, F.M.M. (author)
Many gas fields are currently being produced in the northern Netherlands. Induced seismicity related to gas production has become a growing problem in the Netherlands in the past two decades. To date, a few hundred induced seismic events occurred. Induced seismicity is generally assumed to be the result of induced reactivation of discontinuities...
doctoral thesis 2003
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Cremer, F. (author)
doctoral thesis 2003
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Swinnen, G. (author)
The TBM, not a blind mole! This thesis deals with some aspects of seismic imaging of the soft soil in front of a Tunnel Boring Machine to help tunnel constructors ``see'' the subsurface they are approaching, instead of steering the TBM forward like a ``blind mole''. The Dutch shallow subsurface has a very irregular layering and contains many...
doctoral thesis 2003
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Oldenziel, T. (author)
Time-lapse 3D seismic is a fairly new technology allowing dynamic reservoir characterisation in a true volumetric sense. By investigating the differences between multiple seismic surveys, valuable information about changes in the oil/gas reservoir state can be captured. Its interpretation involves different disciplines, of which the main three...
doctoral thesis 2003
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Van Dongen, K.W.A. (author)
doctoral thesis 2002
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Van Spaendonck, R.L.C. (author)
doctoral thesis 2002
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Cortis, A. (author)
doctoral thesis 2002
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Unger, R. (author)
The main objective of this thesis is to enhance earthquake prediction feasibility. We present the concept and the design layout of a novel seismic transmission system capable of continuously monitoring the Lithosphere for changes in Earth physics parameters governing seismic wave propagation. New-technology seismic vibrator sources (magnetic...
doctoral thesis 2002
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