Facies, thickness variations and reservoir characterisation of Arab formation (Surmeh) in the Eastern part of the Persian Gulf
Subject Areas : Geoscience Fields in relation with Petroleum Geology
Ali reza
Bashari
1
(شرکت ملی نفت ایران )
Keywords: Persian Gulf Arab Fm , Surmeh Fm facies, Petrography Reservoir characterization Salman Reshadat Resalat fields Persian Gulf, Arab Fm., Surmeh Fm., facies, Petrography, Reservoir characterization, Salman, Reshadat, Resalat fields Persian Gulf, Arab Fm., Surmeh Fm., facies, Petrography, Reservoir characterization, Salman, Reshadat, Resalat fields Persian Gulf, Arab Fm., Surmeh Fm., facies, Petrography, Reservoir characterization, Salman, Reshadat, Resalat fields ,
Abstract :
The Kimmerigian-Tithonian) Arab Zone are the prolific hydrocarbon bearing resrvoirs in the eastern part of the Persian Gulf,offshore,Iran.They were deposited in an arid climate which dominate during late Jurassic. The Berriasian to Thitonian Hith formation wich overlies the Arab reservoir constitutes the cap rock,wich just to the east gradually pinches out and form a N-S feather adge. The study reveals that Arab zones form a massive to interbedded anhydrite with varying proportion of limestone and dolomite and generally have regressive units which was deposited on a broad carbonate platform .This formations are thick in center (Salman field) and mostly consist of intertidal pack/grainstones with high porosity/permeability,good cap rock and also close to the source rock,which has the most hydrocarbon potential, but towards east the layers getting thinner with unsuitable cap rock and are away from source rock ,so as a result Arab formation in this part of the Persian Gulf doesn,t seem to be attractive. This study reveals that there is still some undrilled structure within this area which could be attractive for further Exploration drilling.
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