Due to advantages of flexibility in acquisition geometry (especially around obstructions), greater surface consistency, resistance to layer reveberberations, reduced noise and better coverage, ocean bottom cable (OBC) seismic surveys are gaining popularity in deeper and deeper water. Seismic detector positioning methods are not yet standardized in the industry. We discuss two common techniques that employ very different technology: the use of high-frequency acoustic sensors attached to the detectors and positioned independently of the seismic survey and the use of multiple occasions of the onset of seismic energy (first breaks) as survelying observations in a positioning algorithm. These techniques are both competitive and complementary.
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