CGG Multi-Physics is happy to announce that its Helitem helicopter time-domain electromagnetic system has efficiently acquired high-quality, broad-spectrum Airborne Electromagnetic (AEM) knowledge at a base frequency of seven.5 Hz. This is a major breakthrough for useful resource exploration worldwide, and an business first.
As shallow mineral sources are depleted, and mining exercise strikes to ever higher depths, mineral explorers are looking deeper and in additional difficult-to-image environments, reminiscent of beneath conductive cowl sequences. The capability to successfully energize deep conductive targets and survey at decrease frequencies is important to bettering the imaging efficiency of airborne electromagnetic methods in these environments. Until now, these capabilities have been past the attain of AEM methods.
The key to this main advance has been CGG’s continued funding to enhance its AEM receiver design. Historically, receiver motion-induced noise has been the first limiting consider buying helpful low base frequency AEM knowledge. Evolutions within the design of CGG’s Helitem AEM system when it comes to each receiver electronics and a patented receiver suspension system now permit operation at a base frequency of seven.5 Hz. An revolutionary change in transmitter pulse-shape additionally allows early off-time measurement and efficient energizing of deep conductive targets.
CGG’s Helitem AEM system can now picture the Earth’s resistivity to higher depths than different methods whereas retaining resolving energy all through the part. A comparability of resistivity photos from CGG’s 30 Hz and seven.5 Hz Helitem methods reveals that the 7.5 Hz knowledge offers extra interpretable details about the near-surface and likewise delivers correct geological info at depth.
Greg Paleolog, SVP, Multi-Physics, CGG, mentioned: “This important breakthrough places Helitem in a league of its personal as essentially the most superior helicopter electromagnetic expertise for exploring conductive targets at nice depth. This distinctive functionality makes Helitem the premier AEM expertise for explorers requiring deeper and clearer imaging of recent orebodies.” (Source and picture: CGG)
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