Seismisch detectierapport energieopslagstation

How is seismic data reprocessed?

Reprocessing of existing seismic data involves checking and processing old field data into a new seismic section using modern techniques.

Can physics predict seismicity in the Groningen gas field?

For the Groningen gas field, a hybrid physics-based statistical model was developed, that can estimate the change in seismicity due to production or injection variations (Bourne et al., 2015; Van Elk et al., 2019). This model uses first-order physical constraints and adds stochastic elements to efficiently represent aleatory uncertainties.

How important is a local monitoring array for detecting seismogenesis?

The installation of several dedicated local monitoring arrays enabled the detection of seismicity of small magnitudes (M L < 1.5), providing important information on the seismogenesis within the Dutch subsurface. At the same time, the use of the Dutch subsurface will only increase further over the decades to come.

Who is responsible for monitoring induced seismicity?

Monitoring of seismicity is by law the responsibility of the operator, but mostly conducted by the KNMI in a nationwide network. For induced seismicity, however, this network is developed in quite an irregular and inconsistent way, driven by local requirements for different operators and industries.

How many reprocessed seismic lines are in this work package?

This work package contains 28 reprocessed seismic lines from surveys conducted by BP and Californië in the eastern part of Noord-Brabant and the northern part of Limburg. These lines total approximately 600 kilometers with an average line length of 21 km.

Does induced seismicity affect gas storage operations in Dutch gas reservoirs?

The relation between induced seismicity and gas storage operations in Dutch gas reservoirs has been studied extensively (Nagelhout & Roest, 1997; Muntendam-Bos et al., 2008; Van den Bogert et al., 2016; Fenix Consulting Delft B.V., 2018 a, b; Ferronato et al., 2018).