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Abstract

In borehole seismics several methods are in use while drilling. In the case of small layer structures, for instance thin layers or faults, the resolution of surface seismic methods is often not sufficient to determine and locate these structures for exploration. Combining a seismic source and receiver in a common device in the drill string would increase the seismic resolution. In the project SPWD such a prototype of a device has been designed, manufactured and tested. The used source signal frequencies are up to 5000 Hz, which allows a resolution of up to one metre. The resolution is therefore significantly higher than for VSP and SWD. With a penetration depth of about 100 metres an exploration of the borehole surrounding is possible. By applying this method while drilling the risks and costs of drilling can be minimized because of the possibility of adjusting the drill path and locating small sought-after structures.

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/content/papers/10.3997/2214-4609.20142583
2013-04-21
2024-03-28
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20142583
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