A design-oriented numerical investigation seismic soil-structure interaction

Presented here is the numerical investigation on seismic soil-structure interaction applying features of a rather non-conventional earthquake design. The examination focuses on the Groningen site conditions which lately experienced an induced-type of earthquake. A unique situation calls for a suitable seismic design for both existing and new...

Seismic Sensitivity Analysis of Different Carbonate Lithofacies: A Full-elastic Simulation

Using a complete 2D full-elastic seismic simulation from geological modelling, to 2D seismic data forward modelling, to non-linear full-waveform inversion – the interaction of various carbonate lithofacies are observed. Specifically, three different environments of deposition within a carbonate shelf along with their pore-types ranging from...

Seismoelectric wave propagation modeling for typical laboratory configurations: A numerical validation

The seismoelectric effect can be of importance for hydrocarbon exploration as it is complementary to conventional seismics. Besides enabling seismic resolution and electromagnetic sensitivity at the same time, the seismoelectric method can also provide us with additional, high-value information like porosity and permeability. However, very...

Interferometric reservoir monitoring with a single passive source

Changes in the subsurface can be imaged by subtracting seismic reflection data at two different states, one serving as the initial survey or base, and the second as the monitor survey. Conventionally, the reflection data are acquired by placing active seismic sources at the acquisition surface. Alternatively, these data can be acquired from...

Interferometric redatuming of autofocused primaries and internal multiples

Recently, an iterative scheme has been introduced to retrieve the down- and upgoing Green's functions at an arbitrary level ?F inside an acoustic medium as if there were a source at the surface. This scheme requires as input the reflection response acquired at the surface and the direct arrival of the transmission response from the surface to...

Acoustic wavefield separation using horizontal receiver arrays deployed at multiple depths on land

We present a novel inversion scheme for decomposing upgoing and downgoing wavefields from vertical particle velocity recordings in downhole arrays at multiple depth levels. Our method requires no knowledge of the subsurface medium parameters as the required operators are obtained directly from the data by direct-wave interferometry. As we...

Finite difference feasibility modelling of time-lapse seismic noise interferometry for CO2 monitoring

Seismic Interferometry (SI) with ambient noise is a recently developed method for subsurface imaging that involves cross-correlating ambient noise from passive seismic data to reveal the earth’s reflection response. Based on this technique, TNO aims at developing a methodology for efficient monitoring of CO2 geological sequestration in Carbon...