Reservoir modeling of mishrif formation in majnoon oil field, southern Iraq

Abstract

The Middle Cenomanian-Early Turonian Mishrif Formation includes important carbonate reservoirs in Iraq and some other surrounding countries due to their high reservoir quality and wide geological extension. The 2D models of this study for facies, effective porosity and water saturation indicate the vertical and lateral heterogeneity of the Mishrif Formation reservoir properties in the Majnoon oil field. Construction of 2D reservoir model of the Mishrif Formation to explain the distribution of facies and petrophysical properties (effective porosity and water saturation) by using RockWorks software. The increase of effective porosity is attributed to the presence of shoal facies. The high water saturation is attributed to the existence of restricted marine facies or shallow open marine facies. Maximum values of hydrocarbon saturation are predicted to occur towards the crestal parts of the field.