4D Monitoring at 4 km Depth? A Case Study from Smørbukk Sør in the Åsgard Field

A034 4D MONITORING AT 4 KM DEPTH? A CASE STUDY FROM SMØRBUKK SØR IN THE ÅSGARD FIELD Abstract The Middle Jurassic Garn reservoir sandstones in the Smørbukk Sør field were considered to be too deeply buried in order to respond seismically on production effects. A 4D-feasibility study concluded however that time–lapse signals can be detectable from pore pressure reduction in the reservoir if good repeatability is achieved using new seismic acquisition technology. In 2003 time lapse-data were acquired and processed. We show in this paper some results from this data. Introduction LARS KLEFSTAD 1 OLA EIKEN 2 BÅRD OSDAL 3