كلية النفط والمعادن
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Item Petrophysical Evaluation For Abu Gabra Formation-Muglad Basin, Neem K Area (Block 4) Using Wells Data(Al-Neelain University, 2019) Altayeb GassemAlbari Altayeb IbrahimThis study Petrophysical Evaluation for Abu Gabra formation – Muglad basin, Neem k subfield (Block 4) four wells data by using Interactive petrophysics IP. Interpretation of Shaly sand oil reservoirs are still evolving with researchers to conduct a large number of studies to verify the effect of clay minerals on the conductivity of the reservoir through theoretical and experimental methods. In this study have been petrophysical evaluated to Shaly sand reservoirs in the Neem k subfield by selecting one formation to know of the petrophysical properties of the reservoir, it is formation of Abu Gabra. Determination layers of clay and layers of sand in the well logs was done by using interpretation of gamma-ray records, records the electrical resistivity, density recordings, and Neutron recordings, the result obtained in this study were evaluated by three major factors are: porosity, the volume of clay in layers and water saturation of layers, experimental results show clear contrast in the Average porosity, Average volume of clay and Average water saturation, was very compatible with characteristics of the reservoir. هذه الدراسه تمثل تقييم بتروفيزيائي لمتكون ابوجابره – حوض المجلد حقل نيم ك(مربع4)لاربعه ابار باستخدام برنامج انتراكتيف بتروفيزيك. تفسير خزانات الرمل الطيني النفطيه لازالت تتطور مع اجراء الباحثين لعدد كبير من الدراسات للتحقق من تاثير المعادن الطينيه علي الموصليه الكهربيه للخزان من خلال الطرق النظريه والتجريبيه ،في هذه الدراسه تم تقييم بتروفيزيائي لخزانات الرمل الطيني في حقل نيم ك وذلك بتحديد متكون واحد لمعرفة الخصائص البتروفيزيائيه وهو متكون ابوجابره،تم تحديد الطبقات الطينيه والطبقات الرمليه بواسطة تفسير تسجيلات اشعة جاما ، تسجيلات المقاومه الكهربيه، وتسجيلات الكثافه ، وتسجيلات النيترون ، النتائج المتحصل عليها تم تقييمها عن طريق ثلاث عوامل هي المساميه، حجم الطين في الطبقات ونسبة التشبع بالماء وقد اظهرت النتائج تفارق واضح في متوسط نسبة المساميه ، ومتوسط حجم الطين في الطبقات ، ومتوسط نسبة التشبع بالماء وقد كانت متوافقه جدا مع خصائص الخزان.Item Lithology correlation and Petrophysics Evaluation in Ghazal Formation Hilba East Oil Field-Muglad Basin, Sudan(Al-Neelain University, 2018-04) Sarah Omer Awadallah ElhagPetrophysical evaluation study had been done of the Ghazal formation-Muglad basin, Hilba East oil field. That located in the northern corner of Block-4, Hilba wells cluster lie about 16 Km NW of Neem field. Well log data from four wells had been used for lithological interpretation and fluids assessment. Previous studies have shown that the area is faulted many times the reason which makes different values of depth to mark the top of Ghazal formation along the four wells that have been drilled in the area. In the current study Ghazal formation had been evaluated manually and compared with interpretation for all logs have been done to confirm the software results and identify the type of lithology, the quality of reservoir, estimate the Porosity ,Volume of shale, water saturation and discover a new productive zone as well as their continuity. Interactive Petrophysics version 3.5 software had been used in this study and results to the evaluation of three petrophysical parameters range as follow: the effective porosity (16% - 19%), average volume of shale (22% – 35%) and Average of water saturation (71%-83%). The main important problem in this research was the low resistivity that created many difficulties in interpretation process, the solution of this problem using Thomas-Stieber volumetric method crossplots approach defined a relationship based on gamma ray log to total porosity facilitates identification of thin-bed sand/shale. The result obtained reveal that average volume of shale is increasing in the center of study area, toward (H E-3) due to inverse relation of clay volume with porosity therefore the porosity increasing away from the center where the high hydrocarbon potentiality (Hilba East-1), While the water saturation decreased away from the center (Hilba East-3) due to increasing of hydrocarbon saturation. The gas ratio analysis data (Gas chromatography) had been computed manually to estimate the type and quality of petroleum in reservoir of Ghazal Formation.