TGS combines GeoStreamer and flexible hybrid capabilities to deliver high-fidelity, broadband imaging in complex subsurface areas. Data is rich in both low- and high-frequency signal, ideal for high-fidelity reservoir monitoring, high-resolution imaging at all target depths and recovery of accurate geological properties during reservoir characterization.

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Before Image After Image
Conventional (hydrophone)
GeoStreamer (P-UP)

Wavefield Separation

Wavefield separation is a critical step in broadband seismic imaging workflows applied to GeoStreamer and node seismic data. The pressure and velocity sensors record each upgoing seismic event with equal polarity, while the time-delayed downgoing seismic event has opposite polarity. A simple summation and subtraction of the two measured seismic events yields the total up-going (P-UP) and downgoing (P-DWN) pressure wavefields.

Multi-Survey Matching

TGS matching procedure is an adaptive time window algorithm which allows different Papoulis window lengths per frequency. This leads to an accurate amplitude and phase match between surveys especially in the low frequency part of the signal. All matching operators take into account the signal-to-noise ratio (S/N) of the data ensuring optimal matching of the signal. 

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Santos Vision
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Common offset: Before regularization
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Common offset: After regularization

nD Regularization (3D/4D/5D)

TGS offers 3D, 4D and 5D regularization based on the Anti-Leakage Fourier Transform (ALFT) with additional anti-alias protection. In addition to those, TGS also offers regularization based on Minimum Weighted Norm Interpolation (MWNI) and Projection Onto Convex Sets (POCS).

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Every need is different and we'd like the opportunity to discuss yours further. Speak to one of our data or geoscience experts to customize seismic solutions specific to your requirements.