Organic geochemical evaluation and thermal burial history of the Jaddala Formation (Eocene) in Qumar Oil Field, NE, Iraq

摘要

The Eocene Jaddala Formation has been studied from source rock potentiality point of view in the well Qm-1, Qumar Oil Field, NE, Iraq. An average of about 2.4 % total organic carbon was measured from the five analyzed samples in this study. The lower part of the formation showed higher organic matter content and represented a deeper depositional environment than the upper part. The quality of the organic matter appeared to be mainly types II with contribution from type III with different ratios. The pyrolysis analysis, vitrinite reflectance technique, and gas chromatography (GC) analysis all indicated the immature state of the Jaddala Formation in the studied section. The thermal history of the formation showed that Jaddala never entered the maturity stage during its burial history.