Pore Pressure Prediction in Shale Gas Field

Natural gas resources are divided into two categories which are conventional and unconventional. They are classified conventional gas typically if it found in reservoirs with permeability greater than 1 millidarcy (―mD‖) and unconventional gas is found in reservoirs with relatively low permeability (less than 1 mD) and hence cannot be extracted via conventional methods. There are many types of unconventional gas resources but this paper focused on shale gas since it has a huge potential and it is known that shale make up over 75% of drilled formations and cause over 90% of wellbore stability problems.