Well Log Analysis and Interpretation for Mishrif Formation for Amarah Oil Field

Abstract

This study is intended to interpret of well logs for the purpose of determining petrophysical parameters for Mishrif formation in the Amarah Oil Field. This field is situated in the province of Mysan ten kilometers to the southwest of Amarah and ten kilometers to the northwest of Halafaya’s field, and is located southeast of the field of Kamit and about 30 km. M–N cross plot as well as the Matrix Identification (MID) have been applied to calculate mineralogy and lithology of the formation using well logs, cross plots, and reservoir quality index (RQI) along with flow zone indicator (FZI) outputs. The findings indicated that dolomite is just slightly present in the formation, which is primarily composed of calcite. The lithology determination using density–neutron cross plot shows that the formation is primarily limestone with some shale. The interpretation revealed that non-reservoir (barrier) beds divide the seven reservoir units that make up the majority of the Mishrif Formation. The parameters of Archi’s model were calculated using Pickett’s plot. The range values for Archie’s parameters, namely a, m, and n, were found to be 1, 1.29, and 2, respectively.