CGG’S New Helitem-C AEM Systems

Adam Smiarowski; Phillip Miles; Graham Konieczny

doi:10.1071/ASEG2018abT7_3F

1st Australasian Exploration Geoscience Conference – Exploration Innovation Integration

ISSN: 2202-0586
E-ISSN:

oa CGG’S New Helitem-C AEM Systems
Authors Adam Smiarowski^a, Phillip Miles^b and Graham Konieczny^c
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^a CGG Multi-Physics, Toronto, , Canada, [email protected] ^b CGG Multi-Physics, Toronto, , Canada, [email protected] ^c CGG Multi-Physics, Toronto, , Canada, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2018, Issue 1st Australasian Exploration Geoscience Conference – Exploration Innovation Integration, Dec 2018, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2018abT7_3F
- Published online: 01 Dec 2018

Abstract

Recent development and re-design of the Helitem helicopter time domain system have resulted in the release of the Helitem3oc and Helitem35c systems, both of which employ MultiPulse^™. We describe the Helitem30C system, which was designed for efficient operation and is applicable to the majority of TEM surveys. The Helitem35C was designed to increase sensitivity to both resistive and conductive targets (increased geologic bandwidth) while achieving maximum power (and depth). A redesigned receiver suspension system significantly reduces coil motion at low frequencies, allowing for 12.5/15 Hz operation with no increase in coil motion noise, important for exploring under cover. We show case histories using both systems to illustrate their performance.

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2018-12-01

2026-01-19

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References

Chen, T., Hodges, G. and Miles, P. 2014. MULTIPULSE - high resolution and high power in one TDEM system, Exploration Geophysics, 46, 1, 49-57.
Liu, G. 1998, Effect of transmitter current waveform on airborne TEM response: Exploration Geophysics, 29(1/2), 35-41.
Hodges, G. and Chen, T., 2015. Geobandwidth: comparing time domain electromagnetic waveforms with a wire loop mode, Exploration Geophysics, 46, 58-63.
Konieczny, G., Miles, P. and Smiarowski, A., 2016. Breaking through the 25/30 Hz barrier: lowering the base frequency of the Helitem airborne EM system, SEG Technical Program Expanded Abstracts.

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Article Type: Research Article

Keyword(s): airborne electromagnetics; geologic bandwidth; low-base frequency; MultiPulse; system innovation

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