METHOD FOR MONITORING A SUBSOIL ZONE, PARTICULARLY DURING STIMULATED FRACTURING OPERATIONS

摘要

The invention relates to a method for monitoring asubsoil zone, wherein a plurality of receivers arearranged on a surface of the soil or near said surface,straight above a geological zone to be monitored,comprising the following steps:- generating a set of reference seismic data- recording seismic data by means of saidreceivers,- correlating the seismic data recorded (52) withthe reference seismic data,- comparing each trace of the correlated data,with correlated traces located in a vicinity of saidtrace, in order to evaluate a similarity of eachcorrelated trace with the adjacent correlated traces.- detecting a microseismic event occurring in thesubsoil zone by analysing said similarity.This method enables real-time monitoring.