Abstract
Summary Pore pressure prediction is a key necessity for successful drilling operation during exploration phase. Unexpected changes in pore pressure may increase all risks related to drilling operation. The aim of this study is to introduce pore pressure gradient model as a useful tool for investigating geomechanical reservoir compartmentalization in Mishrif carbonate reservoir from an oil field located in Persian Gulf. In this regard, simultaneous inversion algorithm is used to generate a high definition velocity model. Inverted velocity model is then converted to a 3D pore pressure model using velocity-based version of Eaton’s equation. Analyzing created pore pressure model shows a sharp discontinuity crossing central part of reservoir under study that reflects the presence of two different geomechanical zones in the region. A strong geological evidence that confirms one old major fault divided Mishrif reservoir into two different blocks in the region proves this idea.
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