Reservoir characterization, Facies distribution, and sequence stratigraphy of Mishrif Formation in a selected oilfield, South of Iraq

Abstract

Mishrif Formation is considered the most important between the reservoirs formations in the south of Iraq because of its geographic extent. The facies were predicted in Ratawi oilfield from wireline logs that divided Mishrif Formation into two main reservoirs separated by a barrier member. So the formation is almost cupped with shale intervals in both contacts of Rumaila Formations in the bottom and Khasib Formations in the top. While the reservoir characteristics were calculated using the log set in terms of petrophysical properties. The reservoir characteristics destroy and decrease to the south of Ratawi area because of the abundance the facies of the deep marine environments. Furthermore, it was predicted that Mishrif Formation has good reservoir characteristics to the other directions, especially to the east, contrary to the previous expectations.