Abu Madi Formation is a gas fertile rock unit in Nile Delta basin and the main gas production rocks in Baltim fields which located in the Mediterranean sea, north of Baltim city, Egypt. This rock unit in the study area contains two gas productive sand zones; these are zone III main and zone III lower. The lithologic components of Abu Madi Formation that defined from the diaporosity (density-neutron) cross-plot and the tri-porosity (RHOMAA-DTMAA) cross-plot, showing that, Abu Madi Formation consists mainly of sandstone, shale, shaly sandstone in some parts and calcareous material. The resultant petrophysical parameter values, revealed that, both zone III main and zone III lower in the area under investigation show potential in their petrophysical characteristics, as a fertile gas reservoir. Zone III lower shows the most advanced petrophysical characterisation as a desired reservoir, with lower value of shale volume of 4%, good effective porosity of 17% and higher value of hydrocarbon saturation of 70%. Finally, these reservoirs are bounded by two normal faults with remarkable displacement. The first fault located at south, strike E-W and dips toward the North, the other fault located north, trending NE-SW and dips to the north.

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Prospecting in oil and gas fields characterized by risks and high costs which is strongly effective on operations and prospecting plan, so we can avoid many problems and keep the cost reduction with safely drilling a well by pre-dill pore pressure prediction which depends on maintaining the wellbore pressure between the formation pore pressure and the maximum pressure that the formation withstand without fracturing, where Pore pressure prediction improve the decision for the well design by studying the hydrocarbon traps, mapping of hydrocarbon migration pathways. Predrill pore pressure prediction allows for appropriate mud weight to be selected and drilling plan in order to design a proper casing program, so we can avoid well control events such as formation fluid kicks, loss of mud circulation and surface blowouts with the use of accurate pore pressure predictions. The paper provides an overview of Application of Interval Seismic Velocities for Pre-Drill Pore Pressure Prediction and Well design to achieve minimizing the exploration and development risks and to save drilling of expensive wells. It was found that Pore pressure prediction cube was normally compacted, or close to normally compacted.