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CGG releases new airborne survey technology

10th October 2013

New time-domain electromagnetic solution maps shallow to deep geology in one pass

CGG releases new airborne survey technology
Multipulse (bottom section) combines Tempest's (top section) near-surface resolution and Geotem's (middle section) greater depth of exploration. Image courtesy of CGG

CGG on Wednesday announced the launch of Multipulse, an innovative new near-surface and deep-penetrating electromagnetic (EM) survey technique which increases resolution and bandwidth in exploration activities.

 

The technology combines the benefits of CGG’s airborne time-domain EM products, Helitem, Geotem, Megatem and Tempest by  offering a high-power pulse (half-sine wave) for depth of exploration and a lower-power pulse (square wave) for near-surface resolution, both within one cycle, providing the value of two exploration techniques in one pass.

 

The system allows for enhanced definition of near-surface layers such as palaeochannel mapping, oil sands and regolith characterisation for engineering applications as well as in mineral exploration for low-conductivity targets such as porphyry deposits, sedimentary exhalative deposits (SEDEX), volcanic-associated massive sulphide (VMS) and Mississippi Valley type (MVT) deposits.

 

Multipulse technology can be applied on CGG fixed-wing or helicopter time-domain systems, offering maximum spatial resolution and a cost-effective option for regional projects.

 

Benoît Ribadeau-Dumas, senior executive vice president of CGG’s Acquisition Division, said: “CGG has launched Multipulse as a response to industry demand for airborne time-domain EM systems to achieve higher-resolution geological mapping and more effective mineral exploration results.."