Despite the burst of shale gas and shale oil production during the last decade, we are still far from fully understanding shale reservoirs. A pervasive problem is the scarcity of data for complete evaluation of wells penetrating these types of reservoirs. This observation leads to the developments presented in this thesis. Contributions are as follows:
1) Comparison of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM) for studying the internal structure of shale reservoirs.
2) Development of a new petrophysical dual porosity model for calculating the cementation exponent m and water saturation in shale petroleum reservoirs.
3) A sensitivity study using a commercial simulator for studying the effect of the basic petrophysical properties mentioned above and hydraulic fracture parameters. Results show that the importance of matrix porosity and hydraulic fracture length vary depending upon the matrix permeability in shale formations.