Land Processing
PGS provides a complete suite of tools to process seismic data acquired by seafloor (OBC) and land crews. PGS is consequently able solve the myriad of issues affecting the quality of any land 3D seismic dataset. The following figures demonstrate some of the tools routinely used and the results that have been achieved.
Geometry Quality Control
QC is more important than ever, even in todays technologically advanced world. One of the initial tools used in processing Land and Ocean Bottom surveys is Geometry QC. This tool is used to not only Quality Control the navigation information, but to provide updated solutions for Source and Receiver positions via integration with the seismic data.
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Statics
PGS has developed a number of static solutions methods over the last few years, including a complete range of tools to analyze and solve for velocity anomalies present in the Earth.
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Noise Attenuation of Land Data
Attenuation of seismic noise is a complex problem.
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FXYPRED provides a means of attacking-non coherent noise within the data.
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3D-FK can be used to attack both coherent and non-coherent noise within the data.
Signal Enhancement
NS3D is utilized to reinforce coherent signal.
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Signal enhancement on gathers before (left) and after the application of NS3D (right).
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Signal enhancement on a stack before (left) and after the application of NS3D (right).
Wavelet Shaping
Reshaping the effective source wavelet by accommodating the changes in the source wavelet and the effective receiver response is achieved with SC DECON.
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Example of wavelet shaping using SC DECON, before (left) and after (right).
Imaging of Land Data
PGS provides a pre-stack time migration algorithm which incorporates the ability to compensate for curved raypaths and VTI anisotropy (TAPSTM).
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Post-stack migration (left) vs. pre-stack time migration (right).
Data Quality Control
Throughout the various stages of data processing, the integration of holoSeisTM is critical to maximize the level of Quality Control by allowing rapid visualization of large volumes of data.
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Data QC using holoSeisTM.
