Kinematic Analysis of Reservoir Horizons in the Oil Fields of Dezful Embayment
Author(s):
Abstract:
Dezful embayment located in southwest Iran is bounded to Bala-Rud flexure towards northwest, Dezful embayment fault towards northeast, Mountain front fault towards north, and Zagros foredeep fault towards southwest. The embayment consists of thick sedimentary sequences of Mesozoic and Cenozoic time. The whole region is charecterised by intense structural depression. Structural analysis of five anticline reservoirs in Dezful embayment based on interpretation of seismic reflection profiles, and depth sections indicates: Based on dip isogons analysis, and relative competence of the layers, the (competent) reservoir horizons such as Asmari, Sarvak, and Dariyan are of class 1B, while source and cap rock (incompetent) layers such as Pabdeh, Gurpi, and Garu are of class 1A and 1C. Regarding fault-fold relationship, there are fault-propagation folds and fault-bend folds. The Haftkel structure is interpreted as antiformal stack; the Naft sefid structure is fault-bend fold; the Parsi field is fault-propagation fold, and Mamatain and Karanj structures are possibly detachment folds.
Language:
Persian
Published:
Geosciences Scientific Quarterly Journal, Volume:13 Issue:51, 2004
Page:
2
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