FEATURES

BENEFITS

Sentinel is the only truly solid streamer Extruded polymer foam replaces fluid or gel Hydrophone is isolated from strain member to reduce noise Hydrophone is flexible Designed to record high quality seismic: Quieter low drag design Uniform density produces consistent depths Increased stability in variable salinity/water temperatures Compatible with Nautilus integrated 3-in-1 steering, depth control and accoustic device Fast deployment and recovery Improved reliability-by-design leading to less technical downtime

Safer Environmentally friendly Proven in environmentally sensitive frontier areas, including the Arctic Quieter Improved signal-noise ratio Consistent low noise performance for better 4D sensitivity Better High fidelity low frequency recording Deeper penetration for imaging beneath complex overburdens Wider bandwidth for seismic inversion Depth stability improves 4D reliability Wider weather window

Low Noise

In the Sercel Sentinel solid streamer there is a single stress member at the core, isolated from the hydrophone by the PU foam. In fluid or gel streamers the hydrophone is at the core, and is coupled to the strain members. This means that solid streamers do not suffer from towing and environmental noise. This lower noise floor provides a better signal-to-noise ratio at low frequencies, allowing the use of lower low-cut filters.

The amplitude map (below) clearly shows that the solid streamer is much quieter than the fluid-filled streamer in marginal weather.

Amplitude map showing swell noise in a hybrid streamer using a solid front and a liquid tail section in marginal weather