Potential of Using DAS within a Traffic Light System at a Geothermal Site

We consider an upcoming Dutch geothermal site where planned production and injection wells will be equipped with distributed acoustic sensing (DAS) instrumentation for acquiring both active and passive monitoring data. Here, we focus on an approach to simulate synthetic DAS data of induced seismicity using wave propagation modeling. By comparing...

The potential of distributed acoustic sensing (DAS) monitoring systems for seismicity monitoring to feed traffic light systems

In this paper, we address the potential of distributed acoustic sensing (DAS) monitoring systems for seismicity monitoring to feed traffic light systems. DAS monitoring systems are recognized as serious alternative for traditional seismic monitoring systems and their capabilities for monitoring of earthquake data have been demonstrated recently....

Review of worldwide geothermal project mechanisms and occurrence of induced seismicity

Geothermal energy aids in achieving ambitions for the reduction of greenhouse gas emissions by contributing to a more sustainable energy mix. In particular, geothermal energy in the Netherlands can play an important role in providing a sustainable supply for domestic and industrial heat demand. However, just like with any large scale industrial...

Detailed seismic modeling of induced seismicity at the Groningen gas field

We present the results of a detailed seismic modeling study of induced seismicity observed at the Groningen gas field, situated in the North-eastern part of the Netherlands. Seismic simulations are valuable to support the interpretation of observed earthquake waveforms recordings and to increase the understanding of the underlying source...

Studying CO2 storage with ambient-noise seismic interferometry: A combined numerical feasibility study and field-data example for Ketzin, Germany

Seismic interferometry applied to ambient-noise measurements allows the retrieval of the seismic response between pairs of receivers. We studied ambient-noise seismic interferometry (ANSI) to retrieve time-lapse reflection responses from a reservoir during CO2 geologic sequestration, using the case of the experimental site of Ketzin, Germany. We...

Passive seismic monitoring at the ketzin CCS site -Magnitude estimation

In order to allow quantification of the strength of local micro-seismic events recorded at the CCS pilot site in Ketzin in terms of local magnitude, earthquake data recorded by standardized seismometers were used. Earthquakes were selected that occurred in Poland and Czech Republic and that were detected both on the Ketzin array and on nearby...

Four years of experience with a permanent seismic monitoring array at the Ketzin CO2 storage pilot site

CO2 was injected into a saline aquifer near the town of Ketzin in Germany from July 2008 to August 2013. To monitor CO2- migration close to the injection well, TNO installed a fixed 2D seismic array of 120 meters length in 2009, with 3- component (3- C) geophones at the surface, 4-component receivers at 50 meters depth and a central vertical...

High resolution 3D seismic survey off-shore the Netherlands

TNO has carried out a high resolution 3D seismic survey off-shore Rotterdam. The new deployment concept that was tested with this survey results in high-quality 3D images of the shallow subsurface at relatively low cost, particularly in comparison with conventional 3D seismic data acquisition. Initially, the pilot survey aims to demonstrate the...

Reconstructing North Sea palaeolandscapes from 3D and high-density 2D seismic data: An overview

The North Sea subsurface shows the marks of long-term tectonic subsidence. Much of it contains a thick record of glacial and interglacial deposits and landscapes, formed during multiple glacial cycles and the associated regressions and transgressions during the past two million years. At times of lower sea level than today, areas that are...

GHGT-11 - Experiences with a permanently installed seismic monitoring array at the CO2 storage site at Ketzin (Germany): A status overview

Since July 2008, CO2 is injected into a saline aquifer near the town of Ketzin in Germany. For monitoring the CO2-migration close to the injection well, TNO installed a fixed 2D seismic array of 120 meters length in 2009, with 3-component geophones at the surface, 4-component receivers at 50 meters depth and a central vertical array of 4...

Unraveling the shallow geology of the western Wadden Sea using high resolution seismics

Modelling of the shallow subsurface of the Dutch Wadden Sea is merely based on lithological information extracted from a limited amount of core samples. In order to improve the subsurface model and to provide a better basis for engineering purposes, seismic data have recently been acquired, processed and interpreted. This study focuses on the...

Characterisation of landfills using a multidisciplinary approach

The Netherlands has about 3800 abandoned landfills with a total surface of about 9000 ha. As they are often located near urban areas and their influence extends into their surrounding environment they put pressure on available space. Most abandoned landfills were in use until the 1960s and 1970s. Their precise geometry and composition are often...

Geological characterization of the Dutch Wadden Sea using shallow reflection seismics

Mapping of the Dutch Wadden Sea is a major challenge as it is an intertidal zone and therefore has limited accessibility by surveying vessels. Hence, the current subsurface model of the Dutch Wadden Sea is based on a sparse density of lithological information derived from core samples and seismic data. To improve the vertical and lateral detail...