• Startseite

• Institut

• Einleitung

• OnSITE - On-line seismic imaging for tunnel seismic exploration

• Finite-Difference Seismic Wave Simulation

• Time-Domain Full Waveform Tomography

• Inversion of Surface Waves

Seismic Prediction Ahead of Boreholes

One of the greatest challenges in the exploration and exploitation of  oil and gas is the delineation of reservoir and host structures. To this purpose down-hole array tools exist/are being developed, where both source and receiver (array) are incorporated in the down-hole tool to image (part of) reservoir structures away from the well bore.  The seismic working group develops new and improves existing processing and migration techniques for borehole seismic prediction ahead of the drill bit. Data acquired in such an environment usually suffers from limited aperture and a high noise level, especially including strong coherent noise and disturbing signals like tube waves. Optimized processing techniques for this environment have to counteract these limitations. The limited aperture may be compensated by utilizing polarization and slowness information for reducing spatial ambiguity. Based on imaging results for synthetic data, the acquisition geometry will be optimized.

Work group

Thomas Bohlen
Denise De Nil
Stefan Jetschny
Daniel Köhn
Olaf Hellwig

Funding

This project is financially supported by Baker Hughes INTEQ (Celle).