Abstract
The aim of this study is interpretation well logs to determine Petrophysical properties of tertiary reservoir in Khabaz oil field using IP software (V.3.5). The study consisted of seven wells which distributed in Khabaz oilfield. Tertiary reservoir composed from mainly several reservoir units. These units are : Jeribe, Unit (A), Unit (A'), Unit (B), Unit (BE), Unit (E),the Unit (B) considers best reservoir unit because it has good Petrophysical properties (low water saturation and high porous media ) with high existence of hydrocarbon in this unit. Several well logging tools such as Neutron, Density, and Sonic log were used to identify total porosity, secondary porosity, and effective porosity in tertiary reservoir. For Lithological identification for tertiary reservoir units using (NPHI-RHOB) cross plot composed of dolomitic-limestone and mineralogical identification using (M/N) cross plot consist of calcite and dolomite. Shale content was estimated less than (8%) for all wells in Khabaz field. CPI results were applied for all wells in Khabaz field which be clarified movable oil concentration in specific units are: Unit (B), Unit (A') , small interval of Jeribe formation , and upper part of Unit (EB).
Highlights
الوحدات مكمنية لانها تتميز بمراصفات بتروفيزيائية جيدة من حيث التشبع المائي المنخفض والمسامية العالية مع وجود كميات ) التي استخدمت في الدراسة لتحديدNeutron, Density( مجسات ابار كثيرة منها. ضخمه من الهيدروكاربون في هذه الوحدة (NPHI-( لتحديد الصخارية المكمن الثلاثي بواسطة استخدام مرتسم.المسامية الكلية والثانوية وكذلك الفعالة في مكمن الثلاثي ) حيثN/M( حيث يتكون بشكل اساسي من الحجر الجيري والدولومايت ولتحديد المعادن يتم ذلك براسطة مرتسمRHOB ( لكل الابار حقلCPI( تبين نتائج.)8%( تقدًر حجم الشيل في عموم المكمن الثلاثي اقل من. يتكون من كالسايت والدولومايت, )Unit A'(, )Unit B) : حباز بأنه نفوط المتحركة تتمركز في وحدات محدده من وحدات المكمن الثلاثي للحقل خبار وهي
Reservoirs are subdivided in to several units or zones depends on various Petrophysical properties (primary and secondary porosity, lithology, permeability, fluid saturation, mineralogy (Ellis and Singer, 2008)
Khabaz oil field is represent one of the more importantly north Iraqi oil fields which characterized by multiple pay zones which produces from tertiary (Jeribe reservoir) and cretaceous
Summary
Petrophysical interpretation represents one of most essential process to understand reservoir properties in subsurface structures, geological formation, and physical measurement. This process was used to identify Petrophysical properties which related to interpretations and corrections of well log records (Cannon, 2016). The well log related to samples which can be obtained in to subsurface. Reservoirs are subdivided in to several units or zones depends on various Petrophysical properties (primary and secondary porosity, lithology, permeability, fluid saturation, mineralogy (Ellis and Singer, 2008)
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