Abstract
The reservoir units of Mishrif Formation in Majnoon oil field were studied by using available wireline logs (gamma ray, porosity and resistivity) and facies that derived from core and cutting samples for three wells including Mj-1, Mj-15, and Mj-20. The reservoir properties were determined and interpreted by using IP software. The results showed that unit D have the best reservoir properties due to high effective porosity, low water saturation and very low volume of shale. Furthermore, a large part of this unit was deposited in shoal environment. The other reservoir units are then graded in reservoir properties including units B, A, F & E respectively, except unit C, which is considered as a cap unit, because it consists of restricted marine facies so that; it has high volume of shale and water saturation and very low effective porosity.
Highlights
Cenomanian–Early Turonian carbonates of the Mishrif Formation in the Mesopotamian Basin form one of the world’s most prolific hydrocarbon reservoirs in many oil fields in Iraq, such as West Qurnah, Halfaya, Majnoon and Rumaila [1]
Majnoon oil field produces hydrocarbons from carbonate reservoirs that are hosted in Hartha, Sadi, Khasib, Mishrif, Ahmadi, Shuaiba, and Yamama [3]
Identification of reservoir units based on the results of computer processed interpretation (CPI) of well logs
Summary
Cenomanian–Early Turonian carbonates of the Mishrif Formation in the Mesopotamian Basin form one of the world’s most prolific hydrocarbon reservoirs in many oil fields in Iraq, such as West Qurnah, Halfaya, Majnoon and Rumaila [1].Deposits of Middle and Upper Cretaceous are more heterogeneous than underlying units. تست د ارسة الهحجات السكسشية لتكهين السذخف في حقل مجشهن الشفطي بالاعتساد عمى السجدات الستهفخة مجدات السدامية ومجدات السقاومية) والدحشات الخسهبية السدتشتجة من نساذج المباب والفتات،(اشعة كاما حيث تم تحجيج وتفديخ الخهاص السكسشية.)02- مجشهن,11- مجشهن,1-الرخخي لثلاثة ابار وهي Introduction Cenomanian–Early Turonian carbonates of the Mishrif Formation in the Mesopotamian Basin form one of the world’s most prolific hydrocarbon reservoirs in many oil fields in Iraq, such as West Qurnah, Halfaya, Majnoon and Rumaila [1].
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