Deep Water OBN
In the deep-water environments, SAExploration configures a typical survey crew with a single certified DP-2 classed Construction Support Vessel (CSV) staffed and equipped for twin work-class ROV operations, which is supplemented with an industry seismic source vessel configured and tuned to specific source signature requirements. All vessels will comply with industry and customer HSE standards and are fully manned with highly experienced crew. These vessels are supplied survey-ready to meet geophysical industry standards for 4D-Grade data recording.
In all cases, each work-class ROV is supplemented with the most advanced survey instrumentation for extremely accurate and precise subsea positioning of each OBN unit deployed. Twin ROVs enable multiple receiver line deployment and recovery during a single vessel traverse. The seismic source vessel or vessels are equipped for either single, dual or triple source firing techniques and all arrays can be additionally outfitted with the latest near-field hydrophones and steering capabilities for controlled source positioning.
A standalone OBN survey will compliment any legacy seismic dataset or OBN techniques can be deployed concurrently using the seismic source during a towed hydrophone array seismic acquisition to capture near-offsets with nodes surrounding surface obstacles (natural or man-made) or sparse receiver design specifically to capture extended-offsets and azimuths for improved subsurface velocity definition for Full-Waveform Inversion techniques, augmenting the towed-array image.
Our crews are commonly equipped with additional oceanographic instrumentation such as; Pressure-Inverted Echo Sounder (PIES), Sound Velocity, CTD, Current and/or Tide instruments to gather a variety of Metocean data measurements.