Seismic exploration

Claim 1

AN IMPROVED METHOD FOR CONDUCTING REFLECTION SEISMIC EXPLORATION, SAID METHOD COMPRISING THE STEPS OF ESTABLISHING A PLURALITY OF COMMON SECTION SEISMOMETER CABLES ALONG A SURFACE TO BE EXPLORED, SAID PLURALITY OF SID CABLES CONSITUTING A SET-UP; COUPLING A PLURALITY OF SAID CABLES TOGETHER TO FORM A SEISMOMETER SPREAD WHEREIN THE TOTAL NUMBER OF CABLES IN SUCH A SPREAD IS CONSTANT AND LESS THAN THE NUMBER OF SAID CABLES IN SAID SET-UP, SAID SPREAD EXTENDING THE SAME DISTANCE ON BOTH SIDES OF EACH OF PLURALITY OF POINTS ALONG A PROPSECT LINE; LOCATING IN ARRAY OF REFLECTION SEISMOMETERS AT EACH OF SAID PLURALITY OF POINTS ALONG SAID PROSPECT LINE; LOCATING AT LEAST ONE REFRACTION SEISMOMETER AT EACH OF SAID PLURALITY OF POINTS ALONG SAID PROSPECT LINE; GENERATING SEISMIC DISTURBANCES AT LEAST ONE OF SAID PLURALITY OF POINTS; INITIALLY DETECTING A PLURALITY OF REFRACTION WAVES PRODUCED BY SAID SEISMIC DISTURBACNES; RECORDING SAID PLURALITY OF REFLECTION