Elf Exploration Production

Elf Aquitaine Production

Eric De Bazelaire

Jean-Pierre Dunand

Christian Deplante

Alain Riou

Method for exploring an environment with a complex tectonics

Geophysical attribute migration method for a medium

A method of processing seismic signals for the analysis of moveout is presented in which waves are transmitted in a medium, reflected, received by receivers and recorded in the form of seismic traces. A string of N integers is defined having indices j lying between two limits (j.sub.min, j.sub.max) and representative of the moveouts of at least one predetermined gather of traces. A focus depth time t.sub.p for each value of j is calculated. A string of P integer numbers u is defined which determines an interval (P-1).DELTA.X. For each value of j, each trace identified by its parameters X.sub.0 and h is copied as many times as there are integer numbers u in the interval (P-1).DELTA.X. At least one static correction (dt) is applied to each of the copied traces, dependent at least on the parameters j, h and u .DELTA.X. Copying and static correction are repeated for all the values of X.sub.0 and of j.

Method of processing seismic signals so as to reduce the effects of dip

Seismic reflection data acquisition and processing method and device for

Method for the determination of migration velocities in seismic

Method for analysing and processing seismic reflection data for the

Growing community of inventors

Lescar, France

Eric De Bazelaire