Denoising seimic records using AI based methodology

In seismic processing, data recorded in land or marine environments will be contaminated with noise, which is really just the undesirable part of the seismic record which does not conform to our conceptual model of the seismic wavefield.

As noise is a challenge for all seismic datasets the Claritas team successfully invested in the research and development of an AI based method for attenuating noise in both Land and Marine seismic datasets.

Over the last couple of releases of Claritas, our R&D Geophysicist Mark Henderson has been delving into the world of AI, in particular, Tensor Factorisation and low-rank tensors to develop an effective denoising solution. The new DENOISE_TF module attempts to find structure in the input shot and receiver gathers and assumes that this structure is the desired signal, the remainder is considered noise. The application models the structured portion of the data using a low-rank tensor and through a tolerance parameter the rank of the tensor can be indirectly set by the user.

Example Land Shots

example land shots

Land shot gathers: left - no DENOISE_TF, right - with DENOISE_TF, highlighted regions show where noise has been successfully removed by the DENOISE_TF module.

land shot gathers zoomed

Land shot gathers (zoomed): left - no DENOISE_TF, right - with DENOISE_TF, highlighted regions show where noise has been successfully removed by the DENOISE_TF module.

Example Marine Data

example marine data

Stacked sections: left - no DENOISE_TF, right - with DENOISE_TF shows the general reduction in dipping noise and improved continuity of the signal. Highlighted region corresponds zoomed displays below.

zoomed marine data

Zoomed sections: left - no DENOISE_TF, right - with DENOISE_TF shows the general reduction in dipping noise and improved continuity of the signal.

The stack displays from the marine dataset show a general improvement and reduction in random noise on the entire stack and the zoomed area highlights improved resolution on the deeper structure with removal of random and steeply dipping coherent noise.

To put the new DENOISE_TF method into practice, simply download the latest release from our Client Portal and if you need more help or information – please just ask us support@globeclaritas.com.


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