Full text loading...
-
Seismically Derived Pore Pressure Prediction Model for Pressure Profiling, Offshore Mozambique – A Case History
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, Jun 2010, cp-161-00205
- ISBN: 978-90-73781-86-3
Abstract
Pore pressure model was derived for the estimation of pressure cubes in order to implement drilling programs and mitigate geohazards at the Offshore Mozambique. The model was purely based on the seismic data because there were no offset well logs on the offshore wells. The compressional slowness was extracted from the seismic veloicty cube and the bulk density was created using the modified Gadner velocity-density relations. This enabled the calculation of the effective stress and overburden pressure from which the pore pressure was derived. This also enabled the implementation of the seismic inversion workflows. The derived pressure data have been compared with measured formation pressure and a good agreement was observed.