Terrestrial seismic acquisition process and apparatus, in particular for a vertical seismic acquisition
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United States of America Patent
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-
Sep 13, 2005
Grant Date -
Jul 17, 2003
app pub date -
Nov 19, 2002
filing date -
Nov 23, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the acquisition of seismic signals, in which at least two sources of the air gun type are placed within one or more vertical holes extending in the subsoil and in which one or more seismic sensors record the seismic propagated from said sources, that arrive at said sensors either directly, or by being reflected by the interfaces between the various layers of the subsoil, characterised in that the triggering of the various sources is adjusted so that the various seismic signals generated by said sources are simultaneously received by at least one reference sensor which is placed in a vertical hole which extends at the vicinity of the hole(s) which receive(s) the sources or which is one of said holes.
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