Pressure Head Fractal Dimension for Characterizing Shajara Reservoirs of the Shajara Formation of the Permo-Carboniferous Unayzah Group, Saudi Arabia
AlKhidir, Khalid Elyas . 2017
Abstract
Pressure head was gained from distribution of pores to characterize the sandstones of the Shajara reservoirs of the Shajara Formation of the Permo-Carboniferous Unayzah Group. The attained values of pressure head were employed to calculate the pressure head fractal dimension. Based on field observations in addition to the acquired values of pressure head fractal dimension, the sandstones of Shajara reservoirs were divided here into three units. The obtained units from base to top are: Lower Shajara Pressure Head Fractal Dimension Unit, Middle Shajara Pressure Head Fractal Dimension Unit and Upper Shajara Pressure Head Fractal Dimension Unit.
The three Shajara reservoirs were also confirmed by the ratio of bubble pressure to capillary pressure at other points versus effective saturation. It was reported that the permeability accelerates with increasing bubble pressure fractal dimension due to the naturally occurring interconnected channels. The pressure head fractal dimension and bubble pressure fractal dimension was successfully characterize the sandstones of the Shajara reservoirs with certain degree of accuracy
