Özkan, Ali MüjdatGharib, Abbas Falah2024-07-242024-07-242022978-975-8062-48-5https://hdl.handle.net/20.500.13091/5929Total organic carbon and rock-eval pyrolysis analyzes were carried out to determine the organic matter content, organic matter type, and thermal maturity properties of the source rocks (Chia Gara, Naokelekan, and Sargelu formations) in the Ajeel oil field. 39 core and crumb samples were taken from Sargelu, Naokelekan, and Chia Gara formations in wells AJ-12 and AJ-8 in the Ajeel oil field. TOC values in rock samples of Aj-8 of the Chia Gara Formation are between 22.5 and 0.5% and TOC values in rock samples from Aj-12 are between 6.85 and 0.75%. Considering these values of the Chia Gara Formation, it states that it is a medium to excellent source rock. The TOC values of the Naokelekan Formation in the Aj-8 well vary between 1.0 and 16% and in the Aj-12 well, between 15.5 and 11%, indicating that the formation has good and excellent source rock potential. The TOC values of the Sargelu Formation in the Aj-8 well are 2.02 to 10.5% and in the Aj-12 well between 1.09 and 8.38%, these values indicate that the Sargelu Formation is a good to a very good source of the rock. As a result of the distribution of samples from the Sargelu, Naokelekan, and Chia Gara formations using the hydrogen index (HI) and Tmax diagram, it was determined that the Ajeel oil field has three types of kerogen (Type-II, Type-II/III, and Type-III).eninfo:eu-repo/semantics/openAccessAjeelPetroleumSource RockIraqConference Object