Method and device for optimizing the triggering of an array of marine seismic sources
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United States of America Patent
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Feb 2, 1993
Grant Date -
N/A
app pub date -
Jun 28, 1991
filing date -
Jun 29, 1990
priority date (Note) -
Expired
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Abstract
Each source of an array of seismic signal sources is associated with one or several sensors (Ci) which pick up the impulses the associated source emits at the time of triggering. The device essentially includes an apparatus (6) for the acquisition and the storage of all the signals emitted by the sensors (Ci) and a shooting control apparatus (7), having memories for reference data, for triggering the seismic sources according to these reference data. A computer (10) is programmed to determine the reference data used for the triggering, preferable according to the signals from the sensors (Ci) acquired during the previous emission cycles and validated in order to check whether their form and/or arrival times are within fixed limits. This arrangement makes it possible to take into account the real working conditions of the emission array. The invention can be utilized in marine seismic prospecting.
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