Schlumberger introduces new seismic acquisition technology

Schlumberger has unveiled new seismic acquisition technology, dubbed DISCover, which involves towing several streamers at a shallow depth but only a sparse array of streamers at a deeper depth.

Offshore staff

HOUSTON -- Schlumberger has unveiled new seismic acquisition technology, dubbed DISCover, which involves towing several streamers at a shallow depth but only a sparse array of streamers at a deeper depth. The result is frequency-rich data that maintains both ends of the marine spectrum without the high-frequency compromises that usually result from deep towing, the company says. The sparse sampling needed for the low-frequency signals means fewer receivers are needed, and the combination of signals from different depth layers delivers an optimal solution for a strong signal-to-noise ratio dataset.

The DISCover towing geometry allows recovery of the low-, mid-, and high-frequency ranges, supplying broadband acquisition. The technique shows great promise in areas with a complex overburden and/or deep targets, the company says. Also, the additional low-frequencies that the DISCover technique provides allows improved inversion of the data for rock properties as there is only a minimal reliance on models based on well logs, which are often recorded far from the area of interest.

07/24/2009

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