A seminar entitled (Study of Flow units in Mishrif Formation in Gharraf oil field, southern Iraq). Hold at the College of Science, Geology Department. The presenter Madyan Hadi Ali demonstrates the most important objectives in: Identification of microfacies and diagenetic effects by petrographic analysis to predict a depositional environment for Mishrif Formation in Gharaf Oil Field. Determining Hydraulic Flow Units (HFUs) based on porosity – permeability core data, facies variation, and well logs data.