Baker Hughes Corporation

Thomas Bohlen

Olaf Hellwig

Holger Mathiszik

Theodorus W Geerits

Tim W Geerits

Denise De Nil

Daniel Köhn

Stefan Jetschny

Tim W Geeritis

The present disclosure is related to apparatuses and methods for downhole acoustic logging. The tool may be used for generating a guided borehole wave that propagates into the formation as a body wave, reflects from an interface, and is converted back into a guided borehole wave. Guided borehole waves resulting from reflection of the body wave are used to image a reflector. Methods may include processing of acoustic logging signals including: wavefield separation, auto-correlation of wavefield components, filtering using a dip filter, and estimating a distance to the reflective interface.

Imaging of formation structure ahead of the drill-bit

A downhole acoustic logging tool is used for generating a guided borehole wave that propagates into the formation as a body wave, reflects from an interface and is converted back into a guided borehole wave. Guided borehole waves resulting from reflection of the body wave are used to image a reflector.

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Karlsruhe, Germany

Thomas Bohlen