Methods for accurately positioning a seismic energy source while recording seismic data

Abstract From the Canadian patent

Methods for maintaining a steerable paravane supported seismic energy source, as an air gun positioned, laterally at a precise constant predetermined distance from a geophone mounted on a submerged geophone streamer cable while recording offshore marine seismic reflection data from a seismic tow system including electrical controls on a recording boat for towing the paravane and geophone streamer cable are disclosed. Two modifications of an offshore maring seismic energy source tow system are also disclosed. Both systems comprise transmitters and receivers therein for continuously measuring the distance between a vessel towed submerged geophone streamer cable and a towed seismic air gun …