On the use of seismic reflection surveys from oil exploration in deep crustal studies

Details On the use of seismic reflection surveys from oil exploration in deep crustal studies On the use of seismic reflection surveys from oil exploration in deep crustal studies

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...43..236r&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 43, Issue 3, p. 236-243.

Physics

3

Scientific paper

A very large number of seismic reflection surveys is carried out by the oil industry throughout the world. Some of these surveys are designed to study deep oil traps and may use field parameters which, for the most part, are not significantly different from those used in deep crustal reflection studies. The one parameter which always varies is the record length (listening time). In the case of a vibratory source, the record length can be increased at the processing stage by the equivalent reduction of vibration time through partial correlation. We have used an oil exploration survey from a deep sedimentary basin in the coastal plain of Israel and extended its record length using this technique. We show that if a survey with appropriated field parameters, i.e., a survey for a deep target is chosen, deep crustal reflectors can be traced. Since a COCORP type deep crustal reflection study was also carried out in the same region, we can compare the two sets of results. We note that in this case the extended oil exploration record is at least equivalent to, and probably of better quality than, the COCORP type survey. This result is due mostly to a better S/N ratio in the oil exploration survey where input power was significantly larger than in special purpose study. This result indicates the as yet untapped potential of oil exploration data in deep continental crustal studies.

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