Lacona

Superior noise attenuation enabled by Q-Marine technology

Single-sensor recording overcomes many of the limitations of analogue summation within conventional acquisition arrays. For example, at long offsets, traditional hydrophone arrays can act as a spatial filter and attenuate signal arriving along non-vertical raypaths. However, targeted noise attenuation within a Digital Group Forming (DGF) workflow can more effectively remove environmental effects such as marine swell noise.

Lacona is the WesternGeco approach to pre-group-forming noise attenuation. The filter is designed to be adaptive in those parts of f-k space that are occupied by noise components, while having no effect in areas where signal is present. Variations in the amplitude and phase characteristics of individual detectors are corrected before digital group forming.

Lacona is an integral part of any Q-Marine processing workflow.