Seismisk havbunnskilde og metode for 4-komponent seismik

摘要

A method is described for collection of multi-component seismic data based on the use of noise from the installation of a pole together with installing receivers comprised of seismic multi-component geophones and hydrophones. The pole is hammered down to a desired sediment depth and repeatable signals with defined energies are sent out. The receiver cable is comprised of 3-component geophones and hydrophones arranged in a straight line profile, readily in star formation, and is pulled successively, after registration is carried out, in toward the source. One commences with a desired offset and gradually obtains increasing spatial resolution as the recording process progresses. Of special interest will be to arrange the listening cables in the directions where it will be most relevant to drill. One will then obtain valuable data which will make it possible to decide on the optimal drilling direction toward the reservoir, with regard to reduction of the risk of meeting geological danger zones with subsequent operating problems and potential pollution problems.