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Article
Permeability Estimation for Carbonate Reservoir (Case Study/ South Iraqi Field)
تقييم النفاذية للمكمن الكربوني (دراسة حالة/حقل جنوب العراق)

Authors: Samaher A. Lazim --- Sameera M. Hamd-Allah --- Ali Hussain Jawad
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2018 Volume: 19 Issue: 3 Pages: 41-45
Publisher: Baghdad University جامعة بغداد

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Abstract

The heterogeneity nature of carbonate reservoirs shows sever scattering of the data, therefore, one has to be cautious in using the permeability- porosity correlation for calculating permeability unless a good correlation coefficient is available. In addition, a permeability- porosity correlation technique is not enough by itself since simulation studies also require more accurate tools for reservoir description and diagnosis of flow and non-flow units.Evaluation of reservoir characterization was conducted by this paper for Mishrif Formation in south Iraqi oil field (heterogeneous carbonate reservoir), namely the permeability-porosity correlation, the hydraulic units (HU’s) and global hydraulic elements (GHE) methods depending on Reservoir Quality Index(RQI) concepts.

طبيعة عدم التجانسية للمكامن الكاربونية تظهر من خلال التشتت الحاد للبيانات ولذلك يجب توخي الحذر في استخدام علاقة الارتباط المتبادلة للنفاذية- مسمامية لحساب النفاذية مالم يكون هناك معامل ارتباط جيد متاح. بالاضافة الى ذلك فإن تقنية علاقة الارتباط المتبادلة للنفاذية- المسامية غير كافية بحد ذاتها وذلك لكون دراسات المحاكاة تتطلب ايضا ادوات اكثر دقة لوصف المكمن وتشخيص الوحدات ذات الجريان وعدم الجريان.التقييم لتوصيف المكمن تم أجراؤه من خلال هذا البحث لتكوين المشرف لحقل نفطي في جنوب العراف (مكمن كاربوني غير متجانس), وهي علاقة الارتباط بين النفاذية- المسامية ,طريقةالوحدات الهيدروليكية (HU's) وطريقةالعناصر الهيدروليكية العالمية (GHE) ابالاعتماد على دليل جودة المكمن ( RQI).


Article
Determination of flow units of Yamama Formation in the West Qurna oil field, Southern Iraq

Authors: Amna M. Handhal --- Fahad M. Al-Najm --- Hussein A. Chafeet
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 4A Pages: 1878-1898
Publisher: Baghdad University جامعة بغداد

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Abstract

The major objective of this paper is to recognize the flow units of Yamama Formation in the west Qurna oil field, south of Iraq. To attain this objective, four wells namely, WQ-23, WQ-148, WQ-60, and WQ-203 are selected and analyzed. The two techniques that proposed by some scientists to identify flow units are tested and verified. Results are also enhanced using well logs interpretation and the flow areas are proposed through the studying of the behavior of different well logs. Results of applying the two proposed techniques identify six flow reservoir units for the wells WQ-23, WQ-148, WQ-60, and WQ-203, respectively. This study also shows that the flow reservoir properties in the Yamama Formation improved towards the northeast of the West Qurna oil field.

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