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Article
Thermal Maturity History and Petroleum Generation modeling for selected Oil fields Southern Iraq

Authors: Murtadha Doghiam Abdullah --- Abdullah A.AL-Yasseri --- Medhat E. Nasser
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 4C Pages: 2267-2278
Publisher: Baghdad University جامعة بغداد

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Abstract

The thermal maturity , burial history and petroleum generation history of four oil wells selected from four oil fields in Southern Iraq, they are: Nasiriyah(Ns-1 well) , Gharraf (GA-5well) ,Abu Ammood (Ab-1well) and Riffai (Ri-1well) have been studied using 1D basin and petroleum systems modeling. Results showed different period of subsidence, which ranges from high to moderate subsidence, occurred at upper Jurassic to Mid-Cretaceous and slow subsidence in Miocene . The porosity in the studied area represents the highest value in Dammam , Tayarat ,Um-Eradhuma and Khasib Formations. For most of the studied wells, the Paleocene to Miocene has to be regarded as times when the maximum temperature prevailed associated with deep burial could be that the age is the petroleum generation and an additional filling of traps. The organic maturation in Riffai well has entered in the main oil stage, especially Suliay and Yamama Formations whereas only Suliay Formation in GA-5 well entered in the main oil stage Therefore, there are good generated and mature source rocks in this well.


Article
Building a 3D Petrophysical Model for Mishrif Formation in Nasiriyah Oil Field, Southern Iraq

Authors: Murtadha Doghiam Abdullah --- Medhat E. Nasser --- Abdullah A.AL-Yasseri
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2019 Volume: 60 Issue: 1 Pages: 115-126
Publisher: Baghdad University جامعة بغداد

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Abstract

A 3D geological model for Mishrif Reservoir in Nasiriyah oil field had beeninvented "designed" "built". Twenty Five wells namely have been selected lying inNasiriyah Governorate in order to build Structural and petrophysical (porosity andwater saturation) models represented by a 3D static geological model in threedirections .Structural model showed that Nasiriyah oil field represents anticlinal foldits length about 30 km and the width about 10 km, its axis extends toward NW–SEwith structural closure about 65 km . After making zones for Mishrif reservoir,which was divided into 5 zones i.e. (MA zone, UmB 1zone,MmB1 zone ,L.mB1zone and mB2zone) .Layers were built for each zone depending on petrophysicalproperties. MA(1 layer) ,UmB1(6 layer) ,MmB1 (8 layer) LmB1(6 layer) andmB2(5 layer) Petrophysical models (porosity and water saturation) had beenconstructed for each zone of Mishrif reservoir using random function simulationalgorithm. According to data analyses and the results from modelling, the MB1zoneis a good reservoir unit regarding its good petrophysical properties (high porosityand low water saturation) with high presence of oil in economic quantities


Article
Building a 3D Petrophysical Model for Mishrif Formation in Nasiriyah Oil Field, Southern Iraq

Authors: Murtadha Doghiam Abdullah --- Medhat E. Nasser --- Abdullah A.AL-Yasseri
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2019 Volume: 60 Issue: 1 Pages: 115-126
Publisher: Baghdad University جامعة بغداد

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Abstract

A 3D geological model for Mishrif Reservoir in Nasiriyah oil field had beeninvented "designed" "built". Twenty Five wells namely have been selected lying inNasiriyah Governorate in order to build Structural and petrophysical (porosity andwater saturation) models represented by a 3D static geological model in threedirections .Structural model showed that Nasiriyah oil field represents anticlinal foldits length about 30 km and the width about 10 km, its axis extends toward NW–SEwith structural closure about 65 km . After making zones for Mishrif reservoir,which was divided into 5 zones i.e. (MA zone, UmB 1zone,MmB1 zone ,L.mB1zone and mB2zone) .Layers were built for each zone depending on petrophysicalproperties. MA(1 layer) ,UmB1(6 layer) ,MmB1 (8 layer) LmB1(6 layer) andmB2(5 layer) Petrophysical models (porosity and water saturation) had beenconstructed for each zone of Mishrif reservoir using random function simulationalgorithm. According to data analyses and the results from modelling, the MB1zoneis a good reservoir unit regarding its good petrophysical properties (high porosityand low water saturation) with high presence of oil in economic quantities

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