GeoEel- Solid
from Geometrics
Geometrics SolidTM GeoEel’s elegant design offers superior performance for high resolution 2D seismic surveys.
The smallest-diameter solid design available (only 44.5 mm), the GeoEel Solid™ is easy to deploy, easy to transport and can be shipped by air.
Separate 8-channel modules coupled with a unique slim active section design yield ultra-low towing noise levels (under 4 microbar) and are largely immune to electronic interference, leakage and ground loops that plague analogue streamers. Communicates via 100 mbs Ethernet to the Geometrics CNT-2 controller, running field-proven software that is used on over 70 installations worldwide.
Advantages of solid streamers;
- No bulge wave transmission along the length of the streamer.
- Up to 6 hydrophones per group.
- Offers higher resolution compared to competitors streamers due to the tight hydrophone group spacing.
- Low noise compared to fluid filled streamers.
- Extremely rugged and easy to handle.
- Environmentally friendly and non-flammable. Manufactured from solid polyurethane the GeoEel SolidTM presents no risk of leaking oil and can be shipped via air-freight.
- Superior Data Quality, solid core design eliminates bulge waves and noise sources common in other liquid filled streamers. Clean data with 5Hz-10KHz + without resonant frequency due to PVDF film with state of the art digitisers with unmatched signal quality
- Easy to use, 44.5mm diameter (vs Liquid/Gel 55mm), compact and modular design which is easy to use deploy by a small crew and vessel; possible to air ship the streamer for rapid deployment and low mobilization costs)
- A more lightweight system which is 1.6kg/m compared to other systems which are 2.4kg/m (no liquid components and no risk to leaks making more environmentally sustainable)
- Can be expanded to 3000+ channels at 8KHz frequency with a variety of configurations
- Components can be combined to 2D,3D and P-Cable configurations, which allows the same core components to be used 2D/3D UHR/UUHR reflection, as well as refraction surveys.
Product Dimensions
| Physical | Dimensions (L x W x H) | Weight |
|---|---|---|
| GeoEel- Solid (instrument only) | variable x 44.5mm x 44.5mm | 156kg/100m |
Technical Specifications
| A/D Converter Modules: | |
|---|---|
| Channels: | 8 per A/D module. |
| Sample intervals: | 1/8, 1/4, 1/2, 1, 2 ms. |
| Bandwidth: | 5 Hz to 3 KHz. |
| Programmable gain: | 0 dB, 8 dB, 18 dB, 30 dB, 42 dB. |
| Anti-alias filter: | Set by sample interval, down 135 dB at stop-band. |
| Maximum input range: | 1.59Vrms |
| Resolution: | 24 bits including sign. |
| Dynamic range: | 120dB Typical @ 1ms. |
| Record length: | Up to 32,768 samples. |
| Continuous recording mode: | Available, with GPS synchronization. |
| QC tests: | Leakage and capacitance of hydrophone elements, noise, offset, harmonic distortion and gain similarity. |
| Hydrophone Sections: | |
| Number of channels: | 8 per section. |
| Group inverval: | 1.5625, 3.125, 6.25, or 12.5m. |
| Hydrophones per group: | 4-6 (typical; up to 12 upon request). |
| Group sensitivity: | -194 + 1.5 dB re 1 V/mPa. |
| Low cut filter: | 10 + 0.5 Hz (100 and 50m). 15 + 1 Hz (25m and 12.5m) |
| Hydrophone type: | Proprietary polymer. |
| Strain member: | Zylon |
| Working load: | 635 kg. |
| Minimum bend radius: | 1 m. |
