Patent ID: 7391675

Claim:
A method, comprising: monitoring microseismicity, the monitoring comprising: determining modeled arrival times; receiving one or more seismic signals with one or more seismic detectors: performing detection transform of the received signals: mapping the detection transform results utilizing the modeled arrival times to generate a continuously updated historical spatial map such that the map represents a measure of the likelihood that there was a source of seismic energy occurring at a time, in space; evaluating values of the map to determine locations and times of microseismic events: wherein the mapping comprises utilizing: Map ⁡ ( i , j , k ) = ( 1 - 1 T c ) * Map ⁡ ( i , j , k ) + 1 T c * P_SNR * S_SNR * P_Match Where: T c is a time constant; P_SNR=P Detection SNR at time T 0 +T p (i, j, k); S_SNR=S Detection SNR at time T 0 +T s (i, j, k); and P_Match=dot (Modeled_P_Vector (i, j, k), Waveform Vector (T 0 +T p (i, j, k)) 2 .