Gemini Enhanced Frequency Source: Precision in Seismic Imaging
The Gemini source extends low-frequency bandwidth for clearer imaging, improved velocity models, and more consistent 4D monitoring. Its simple, single-element design reduces complexity, improves safety, and keeps operations on track.
Unique 1-D Point Source Technology
Gemini is a single-element, omnidirectional source engineered for seismic imaging. Unlike conventional arrays, its true 1-D signature eliminates directional variability, resulting in cleaner wavelets, reduced sidelobes, and more reliable AVO/AVA analysis.
By extending the low-frequency range by an extra octave, Gemini improves the accuracy of Full Waveform Inversion (FWI) models and accelerates convergence. The result: clearer images, better geological interpretation, and higher confidence in velocity modeling across complex subsurface environments.
- Generates more low frequency energy than standard airgun array
- Significantly lower energy above 200 Hz
- Operationally simpler
- Usable offsets exceeding 40 km
- Comparable energy for imaging up to 50 Hz
- Less acquisition downtime
- Point source simplifies data processing
Imaging Accuracy and Operational Efficiency
More reliable results
- Reduced uncertainty in source designature improves AVO/AVA consistency
- Extended low-frequency content supports more accurate initial velocity models and faster FWI workflows
- Enhanced bandwidth produces crisper, higher-resolution images with fewer sidelobes
- Delivers consistency in 4D acquisition, with fewer reshoots and better repeatability
Simplified deployment
- Single-element design reduces mechanical complexity and lowers the risk of downtime
- Streamlined towing configuration enables faster deployment and retrieval
- Fewer moving parts mean fewer maintenance requirements and faster crew training
Productivity and Resilience at Sea
Gemini’s straightforward design improves operational resilience. When deployed with a backup onboard, source-related issues can be addressed quickly without interrupting the survey. This minimizes reshoot risk, reduces NPT, and keeps acquisition timelines on track.Fewer components also translate to reduced HSE exposure during handling, helping crews operate more safely and efficiently in demanding offshore environments.
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TGS Honored with ExxonMobil's 2024 Supplier Innovation Award for Gemini Enhanced Frequency Source Technology
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