Patent ID: 6260656
Filing Date: 2001-07-17
Classification: G01V

Abstract:
A land seismic data acquisition method comprising the following steps:a) in a desired spread for a seismic data acquisition, selection at least one section of a desired seismic survey line and positioning a cable spool vehicle, which has a cable drum whereon a seismic cable with attached seismic sensors is spooled, at one end of the desired section of seismic survey line and laying a free end of the cable on the ground;b) moving the cable spool vehicle along the desired seismic survey line while revolving the drum at a rate dependent upon the speed of movement of the vehicle to let the seismic cable with attached seismic sensors unspool from the drum in such a way that the cable is laid on the ground substantially free of tension; andc) transmitting acoustic signals into the ground, acquiring the resulting seismic signals with the seismic sensors, and recording the acquired seismic signals in digital form.