How Does Seismic Data Quality Influence Pore Pressure Estimation and Interpretation?
Understanding formation pore pressure distribution is critical not only for the seal integrity and hydrocarbon accumulation column height evaluation of a prospect, but also for the drilling plan and hazard prevention of a well in today's competitive exploration and production environment. There are two main approaches for pore pressure estimation: geological using basin modeling and geophysical using seismic velocity. In this paper seismic velocity was used for pore pressure estimation. The impact of the input data quality in terms of Signal-to-Noise Ratio (SNR) and frequency bandwidth on the accuracy of seismic velocity analysis and. ultimately, the reliability of pore pressure estimation were reviewed at selected milestone processing steps that were used to enhance the Prestack Time Migrated (PSTM) seismic data.