Study of crude oil types in the Mishrif formation within Noor oil field, Missan Governorate south Iraq

الملخص EN

Mishrif crude oil is characterized by low API˚ gravity, high sulfur content, and carbon isotope ratio of-27.59.

The composition of Mishrif crude oil is mainly aromatic.

The different relation between different biomarkers indicate that the source of Mishrif crude oil is an anoxic marine carbonate mature kerogen type II, with an age of Upper Jurassic–Lower Cretaceous.

Accordingly, the most probable source for this crude oil may be the Sargelu and Sulaiy Formations.

The studied crude oil is non-biodegraded evidenced from chromatograms and crude oil composition of ternary diagram.