Thermal Maturity History and Petroleum Generation modeling for selected Oil fields Southern Iraq

  • Murtadha Doghiam Abdullah Department of Geology, College of Science, University of Baghdad, Baghdad, Iraq
  • Abdullah A. AL-Yasseri Company of oil exploration, Basra, Iraq
  • Medhat E. Nasser Department of Geology, College of Science, University of Baghdad, Baghdad, Iraq

Abstract

The thermal maturity ,  burial history and petroleum generation history of  four oil wells selected  from four oil fields in Southern Iraq, they are: Nasiriyah(Ns-1 well) , Gharraf (GA-5well) ,Abu Ammood (Ab-1well) and Riffai (Ri-1well) have been studied using 1D basin and petroleum systems modeling. Results showed  different period of subsidence, which ranges from high to moderate subsidence, occurred at upper Jurassic to Mid-Cretaceous and slow subsidence in Miocene  . The porosity in the studied area represents the highest value in Dammam , Tayarat ,Um-Eradhuma and Khasib Formations. For most of the studied wells, the Paleocene to Miocene has to be regarded as times when the maximum temperature prevailed associated with deep burial could be that the age is the petroleum generation and an additional filling of traps. The organic maturation in Riffai well has entered in the main oil stage, especially Suliay and Yamama Formations whereas only  Suliay Formation  in GA-5 well entered in the main oil stage Therefore, there are good generated and mature source rocks in this well.

Published
Dec 26, 2018
How to Cite
ABDULLAH, Murtadha Doghiam; AL-YASSERI, Abdullah A.; NASSER, Medhat E.. Thermal Maturity History and Petroleum Generation modeling for selected Oil fields Southern Iraq. Iraqi Journal of Science, [S.l.], p. 2267-2278, dec. 2018. ISSN 2312-1637. Available at: <http://scbaghdad.edu.iq/eijs/index.php/eijs/article/view/546>. Date accessed: 24 may 2019.
Section
Geology