- document
-
Eltayieb, M.F.M.I. (author), Werthmüller, D. (author), Drijkoningen, G.G. (author), Slob, E.C. (author)Tracking temperature changes by measuring the resulting resistivity changes inside low-enthalpy reservoirs is crucial to avoid early thermal breakthroughs and maintain sustainable energy production. The controlled-source electromagnetic method (CSEM) allows for the estimation of sub-surface resistivity. However, it has not yet been proven that...journal article 2023
- document
-
Drijkoningen, G.G. (author)The overall conditions under which geophysical data are being acquired have changed over the past five years due to the global economy combined with an increased emphasis on low environmental impact sustainability and safety. For land seismic acquisition, minimizing land disturbance, reducing CO2 emissions and increasing crew safety are key...journal article 2022
- document
-
Eltayieb, M.F.M.I. (author), Werthmüller, D. (author), Drijkoningen, G.G. (author), Slob, E.C. (author)Delft geothermal project (DAPwell) is a planned geothermal well doublet, where relatively cold water is going to be injected through one well into a low enthalpy geothermal reservoir to produce hot water from the other well. The volume of the cold water around the injection well will increase over time and, in the end, result in a thermal...abstract 2022
- document
-
Al Hasani, M.M.K. (author), Drijkoningen, G.G. (author), Wapenaar, C.P.A. (author)In a surface-seismic setting, Distributed Acoustic Sensing (DAS) is still not a widely adopted method for near-surface characterisation, especially for reflection seismic imaging, despite the dense spatial sampling it provides over long distances. This is mainly due to the decreased broadside sensitivity that DAS suffers from when buried...conference paper 2022
- document
-
Vardon, P.J. (author), Laumann, S.J. (author), Schmiedel, T. (author), Vargas Meleza, L. (author), Barnhoorn, A. (author), Abels, H.A. (author), Drijkoningen, G.G. (author), Dieudonné, A.A.M. (author), Beernink, S.T.W. (author), van den Berg, J.J. (author)The multi-purpose research borehole at the Delftse Hout is the third of four seismic monitoring locations of the seismic monitoring network for the geothermal research project on the TU Delft campus (Geothermal Delft GTD, also known as DAPwell, https://geothermiedelft.nl/). For the geothermal research project, two deep wells (“a doublet”...report 2022
- document
-
Vinard, N. (author), Drijkoningen, G.G. (author), Verschuur, D.J. (author), Alexandrov, D. (author), Eisner, Leo (author)Retrieving accurate microseismic source locations induced by hydraulic-fracturing operations is an important step to gain insights into the hydraulically stimulated reservoir volume. Recently, deep neural networks have been proposed that directly recover source locations from the seismic waveforms. The optimal performance of the proposed deep...journal article 2022
- document
-
Brodic, Bojan (author), Ras, Paul (author), Kunder, Richard de (author), Drijkoningen, G.G. (author), Malehmir, Alireza (author)Seismic imaging characteristics of a prototype electrically driven, linear synchronous motor-based, vertical-force seismic vibrator ("e-vib") were evaluated at a site in the Netherlands. The system weighs 1.65 t and excites seismic signals with a peak force of 6.7 kN. Data were recorded along two collocated geophone-based nodal and...review 2021
- document
-
Vinard, N. (author), Drijkoningen, G.G. (author), Verschuur, D.J. (author)Hydraulic fracturing plays an important role when it comes to the extraction of resources in unconventional reservoirs. The microseismic activity arising during hydraulic fracturing operations needs to be monitored to both improve productivity and to make decisions about mitigation measures. Recently, deep learning methods have been investigated...journal article 2021
- document
-
Slob, E.C. (author), Draganov, D.S. (author), Eltayieb, M.F.M.I. (author), Drijkoningen, G.G. (author), Werthmüller, D. (author), Ghose, R. (author)Difficulties in detecting and characterising shallow objects close the surface with seismic shear waves are often problematic because of dominant surface waves. By sequencing a specific combination of two data driven processing steps followed by diffraction tomography can overcome these problems. Small scattering objects become visible in the...conference paper 2021
- document
-
RuszkiczayY-Ruediger, Zs (author), Balázs, A. (author), Csillag, G. (author), Drijkoningen, G.G. (author), Fodor, L. (author)The cumulative incision rates of ~50–70 m/Ma integrating over the last ~3 Ma have been derived from published terrace-chronological data of the Danube river in the Western Pannonian Basin. An apparent acceleration of uplift rates was observed for shorter timescales culminating at ~200 m/Ma over the last ~140 ka. An examination of the change...journal article 2020
- document
- Aguilar Lopez, J.P. (author), Bogaard, T.A. (author), Ruiz, Andres Garcia (author), Herràez, Miguel Gonzàlez (author), Drijkoningen, G.G. (author) abstract 2019
- document
-
Schaller, A.M. (author), Streich, Rita (author), Drijkoningen, G.G. (author), Ritter, Oliver (author), Slob, E.C. (author)Controlled-source electromagnetic (CSEM) data are sensitive to the subsurface resistivity distribution, but 3D inversion results are ambiguous, and in-depth interpretation is challenging. Resolution and sensitivity analysis as well as the influence of noise on resolution have been used to quantify 3D inversion performance. Based on these...journal article 2018
- document
-
Holicki, M.E. (author), Drijkoningen, G.G. (author), Wapenaar, C.P.A. (author)Up–down wavefield decomposition is effectuated by a scaled addition or subtraction of the pressure and vertical particle velocity, generally on horizontal or vertical surfaces, and works well for data given on such surfaces. The method, however, is not applicable to decomposing a wavefield when it is given at one instance in time, i.e. on...journal article 2018
- document
-
Jiménez-Monroy, Kathia L. (author), Renaud, N. (author), Drijkoningen, Jeroen (author), Cortens, David (author), Schouteden, Koen (author), Van Haesendonck, Christian (author), Guedens, Wanda J. (author), Manca, Jean V. (author), Siebbeles, L.D.A. (author), Grozema, F.C. (author), Wagner, Patrick H. (author)Determining the mechanism of charge transport through native DNA remains a challenge as different factors such as measuring conditions, molecule conformations, and choice of technique can significantly affect the final results. In this contribution, we have used a new approach to measure current flowing through isolated double-stranded DNA...journal article 2017
- document
-
Bharadwaj, Pawan (author), Drijkoningen, G.G. (author), Mulder, W.A. (author), Thorbecke, J.W. (author), Neducza, Boriszlav (author), Jenneskens, R (author)In the near surface with unconsolidated soils, shear-wave properties can often be characterised better and with a higher resolution than compressional-wave properties. To enable imaging ahead of a tunnel-boring machine, we developed a seismic prediction system with a few shear-wave vibrators and horizontal receivers. The boring process is...journal article 2017
- document
-
Holicki, M.E. (author), Drijkoningen, G.G. (author), Wapenaar, C.P.A. (author)We propose a novel directional decomposition operator for wavefield snapshots in heterogeneous-velocity media. The proposed operator demonstrates the link between the amplitude of pressure and particlevelocity plane waves in the wavenumber domain. The proposed operator requires two spatial Fourier transforms (one forward and one backward) per...conference paper 2017
- document
-
Bharadwaj, Pawan (author), Mulder, W.A. (author), Drijkoningen, G.G. (author)Least-squares inversion of seismic arrivals can provide remarkably detailed models of the Earth's subsurface. However, cycle skipping associated with these oscillatory arrivals is the main cause for local minima in the least-squares objective function. Therefore, it is often difficult for descent methods to converge to the solution without an...journal article 2016
- document
-
Holicki, M.E. (author), Wapenaar, C.P.A. (author), Drijkoningen, G.G. (author)We propose a novel acoustic decomposition operator for time slices, loosely based on conventional surface decomposition operators. The proposed operators hold for constant velocity models and require two 2D Fourier Transforms (one forward, one backward) per decomposed time slice per decomposition direction. We then demonstrate the capabilities...conference paper 2016
- document
-
Kudarova, A. (author), van Dalen, K.N. (author), Drijkoningen, G.G. (author)Mesoscopic-scale heterogeneities in porous media cause attenuation and dispersion at seismic frequencies. Effective models are often used to account for this. We have developed a new effective poroelastic model for finely layered media, and we evaluated its impact focusing on the angledependent attenuation behavior. To enable this, an exact...journal article 2016
- document
-
Noorlandt, R.P. (author), Drijkoningen, G.G. (author)The geometry of the contact between a vibrator and the earth underneath influences the dynamics of the vibrator. Although a vibrator might appear to be well-coupled with the earth on a macroscale, perfect coupling certainly does not occur on the microscale. With the aid of contact mechanical modeling and concepts, it can be shown that this lack...journal article 2016