Development of stress-induced fracture patterns and accessing reservoir potential of the exposed formations of Panoba Anticline

Kohat Plateau has huge hydrocarbon potential and most of the reservoirs are structurally controlled. Panoba Anticline is among the largest anticlines in Kohat Plateau consists of Paleocene to Eocene sequence. In this research petrophysical properties (density, porosity and permeability of the fractures) of reservoir formations esposed in the Panoba Anticline are analyzed. The main and regional compressional stresses on Panoba Anticline are north-south oriented and the other stresses are might be its derivatives. Based on petrophysical properties the formations of Panoba Anticline are analyzed for reservoir potentiality. Petrophysical properties varies from formation to formation as well as within a same formation because of the fractures behaviors. The reservoir types were assigned to reservoir formation by comparing the results on qualitative basis with Nelson (2001) naturally fractured reservoir (NFR) system. The reservoir character of Kohat Formation is Type 4 to Type 2; Shekhan Formation Type 3 to Type 1; Patala formation Type 4 to Type 3, while the Lockhart Formation has Type 3 to Type 1 reservoir character. In conclusion the petrophysical analysis of Panoba anticline offers a valuable insight into the formations reservoir potentiality which contributes a better understanding of the hydrocarbon prospects in the Kohat Plateau.