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Article
Geological modeling using Petrel Software for Mishrif Formation in Noor Oil Field, Southeastern Iraq

Authors: Ali M. Hasan Altameemi --- Aiad Alzaidy
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 3C Pages: 1600-1613
Publisher: Baghdad University جامعة بغداد

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Abstract

Petrel is regards one of the most important software to delineate subsurface Petrophysical properties to the reservoir. In this study, 3D Integrated geological models has been built by using Petrel software. The process includes integrated Petrophysical properties and environmental approaches. Noor oil field within Mishrif Formation in terms of structural geology represents asymmetrical anticlinal fold with direction NW-SE. Porosity and water saturation model have been built. The reservoir was divided into several reservoirs and Non-reservoir units depends on the Petrophysical properties for each zone. In addition, intact model for the reservoir in terms of porosity and water saturation have been built. MB reservoir unit represents the most important oil bearing unit according to the high porosity and low water saturation are present in this unit. MB reservoir unit in terms of Paleoenvironment which represent the shoal including rudist biostrome. Rudist biostrome buildups comprise the major oil producing reservoirs in the carbonate strata during Cretaceous Period.


Article
Facies Analysis and Geological modeling of Euphrates Formation in Ajeel Oil Field, Northern Iraq

Authors: Muhand Hassan Mahammed --- Medhat E. Nasser
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 4B Pages: 2065-2079
Publisher: Baghdad University جامعة بغداد

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Abstract

Abstract The current study summarized the construction of a three-dimensional geological model of the Aquitanian sediments age, which represented by the Euphrates and Serikagni formation in Ajeel Oil Field, where Ajeel Oil Field has structural closure towards northwest - southeast. Sedimentary of the current study consist of limestone, dolomitic limestone, dolomite (compose of skeletal grains, non-skeletal grains and cement) and the appearance of some anhydrite rocks. The petrographic study of the Euphrates Formation were prepared using a thin section of wells (Aj-1, Aj-4, Aj-5, Aj-6 and Aj-7), Previous studies and geological reports, as well as use well logs data in the statistical analysis by Petrel software using the Neural Network and Train Estimation Model, for divide sedimentary environments of Euphrates Formation. The petrographic analysis showed mudstone, wackstone, packstone and grainstone facies. The sedimentary environment was then determined and the sedimentary model of the current study rocks in the Ajeel field which compared with Wilson scheme where represented by zones (FZ-6, FZ-8, FZ-7) extend through lagoon environment, back shelf and open shelf, through the sedimentary model was determined the type of Euphrates Formation platform(Rimmed Platform).

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