Pore Pressure Prediction in Well Planning and Safe Drilling

Abstract

The trend of normal compaction and the pore pressure gradient plays a vital role in oil and natural gas wells designs in well planning and safe drilling. It is imperative to adequately understand the physical principles originating and facilitating these pressures and as well evaluate the models of quantification for a particular geographical area. This research used Eaton’s depth-dependent normal compaction equations for pore pressure prediction in subsurface formations of geo pressures zones in an onshore well drilled in the Niger Delta region. The research focuses in the normal compaction trends using cores from sonic, density and shale resistivity logs. The method shows a significant magnitude of pore pressure determination with high precision. From those obtainable results, I observed that the accuracy of the prediction depends on the from normal compactions trend.