Application of Thermal Modelling for Geochemical Characterization of Gadvan Formation, Persian Gulf, Iran

  • سال انتشار: 1393
  • محل انتشار: مجله بین المللی معدن و مهندسی زمین، دوره: 48، شماره: 2
  • کد COI اختصاصی: JR_IJMGE-48-2_003
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 687
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نویسندگان

Ahmad Vaezian

Faculty of Mining, Petroleum and Geophysics, Shahrood University, Shahrood, Iran

Mansur Ziaii

Faculty of Mining, Petroleum and Geophysics, Shahrood University, Shahrood, Iran

Mohammad Reza Kamali

Exploration and Production Research Division, Research Institute of Petroleum Industry, Tehran, Iran

Ali Kadkhodaie-Ikhchi

Geology Department, Faculty of Natural Science, University of Tabriz, Tabriz, NW Iran

چکیده

In the this research, the hydrocarbon generation potential of the Gadvan Formation as a probable source rock was investigated in the central part of the Persian Gulf at the borders of Iran. Type and maturity level of kerogen were investigated in six wells using the results of Rock-Eval pyrolysis and compared with results yielded by the modelling software program known as Pars Basin Modeler (PBM). The cross-plot of hydrogen index (HI) versus maximum temperature suggests that the Gadvan Formation reached early to mid-maturity stages in the studied area, which means that it could act as a gas prone source rock. Furthermore, the burial and thermal history of the Gadvan Formation was determined in one well. Two methods, Easy %Ro and time-temperature index (TTI) were used for the reconstruction of thermal modelling and studying the thermal maturity level in all of the drilled wells reaching the Gadvan Formation. The results of the TTI and Easy %Ro methods were in good agreement and both of confirmed the results of Rock Eval analysis. An integrated approach using different techniques showed that the Gadvan Formation can be classified as a poor gas bearing source rock in the studied area, while its maturity increases towards the southern parts of the Persian Gulf.

کلیدواژه ها

Gadvan Formation, Iran, pars basin modeller, source rock evaluation, thermal modelling

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