SmartLF for robust and straightforward reduction of low-frequency distortion
- Gilles Ollivrin (Sercel) | Nicolas Tellier (Sercel)
- Document ID
- Society of Exploration Geophysicists
- SEG International Exposition and Annual Meeting, 15-20 September, San Antonio, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Exploration Geophysicists
- Sources, Broadband, Noise, Vibroseis, Acquisition
- 2 in the last 30 days
- 2 since 2007
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Extending the seismic signal frequency towards the low frequencies has become almost standard on Vibroseis seismic projects, owing to the benefits it provides in terms of vertical resolution, signal penetration, inversion workflow results or ease of interpretation. However, the emission of this new low-frequency bandwidth is associated with levels of distortion much higher than with the conventional sweep bandwidth, owing to the inherent design of seismic vibrators based on hydraulic actuators. Several solutions have been proposed in recent years to prevent the generation of this distortion, but their field implementation remains thus far quite restricted due to either limited performance or proprietary technologies, not commercially available to third parties. This abstract presents a new approach for reducing the low-frequency distortion, embedded in the vibrator electronics itself and easy to implement and use during seismic operations. Field tests performed with different vibrators on various terrains confirmed the efficiency of this new approach.
Presentation Date: Monday, September 16, 2019
Session Start Time: 1:50 PM
Presentation Time: 2:40 PM
Presentation Type: Oral
|File Size||793 KB||Number of Pages||5|
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