Realistic quantitative match between the results of simulator to seismic modelling and observed seismic can be used to update the reservoir model. For this purpose, it is vital to accurately adjust the parameters involved in petro-elastic model (PEM) and seismic modelling as the two controlling components of Sim2seis analysis. The PEM parameters are calibrated from a Sim2seis perspective using well log data. It is important to adapt the PEM parameters according to the lithology definition at the simulation cell scale, which is different from the log scale. The convolutional model (CM) is calibrated by comparison of the results with a full waveform pre-stack finite difference (FD) seismic modelling approach. The results show that if enough care is taken, CM can produce reliable results for 4D analysis. CM amplitudes are consistent with FD, while for time shift, in the case of small time shifts the error between the two methods can be of the same magnitude as the 4D signature.
|Publication status||Published - May 2011|
|Event||SPE EUROPEC/EAGE Annual Conference and Exhibition - Vienna, Austria|
Duration: 23 May 2011 → 26 May 2011
|Conference||SPE EUROPEC/EAGE Annual Conference and Exhibition|
|Period||23/05/11 → 26/05/11|