Investigation of Hydrocarbon Generation Process for Kazhdumi Source Rock in Kitchen Area of Darquain Oil Field in the Abadan Plain

There are several Jurassic and Cretaceous hydrocarbon source rocks in the Abadan Plain, including the organic-rich Albian Kazhdumi Formation which has a favorable geochemical characteristics for oil and gas generation. In this study, basin modeling used to investigate and compare petroleum generation from the Kazhdumi Formation of a well drilled on the Darquain anticline as well as a hypothetical constructed well for the deepest part of the kitchen area. The thermal history of the studied wells reconstructed using the basin modeling software and oil generation stage of the source rock were obtained. Modeling results have been investigated and differences in the history of the oil production processes in the drilled well and the deep part of the kitchen area are discussed. Results showed that temperature, maturity, transformation ratio, and hydrocarbon expulsion quantity increase from the anticline toward the hypothetical well. However, In the geological past, however, Kazhdumi temperature and maturity in the hypothetical well were less than anticline position. In the drilled well, hydrocarbon expulsion from Kazhdumi occurred from 20 Ma, and it is not reach to peak of oil generation stage. This source rock passed peak of oil generation in the hypothetical well area where the hydrocarbon expulsion occurred from 10 Ma, and expulsion quantity was about 75 percent more than anticline.