05 اردیبهشت 1403
علي رنجبر

علی رنجبر

مرتبه علمی: استادیار
نشانی: دانشکده مهندسی نفت، گاز و پتروشیمی - گروه مهندسی نفت
تحصیلات: دکترای تخصصی / مهندسی نفت
تلفن: 077
دانشکده: دانشکده مهندسی نفت، گاز و پتروشیمی

مشخصات پژوهش

عنوان Application of medical and dental CT-Scan technologies for determining porosity distribution of the Persian Gulf coastal zone and Zagros basin core samples
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله JOURNAL OF AFRICAN EARTH SCIENCES
شناسه DOI
پژوهشگران دانیال فرخیان (نفر اول) ، رضا آذین (نفر دوم) ، علی رنجبر (نفر سوم)

چکیده

Comprehensive study of a reservoir is possible through a correct and accurate analysis of reservoir petrophysical properties and their distribution pattern in geological formations. Application of imaging technology assists a careful analysis of petrophysical properties without destroying samples. In this study, medical and dental CTscan techniques are applied for porosity determination of 20 core samples collected from Persian Gulf coastal zone and Zagros basin in order to compare with routine porosity measurement technique. The studied core samples included salt, sandstone, marl, calcite-carbonate and dolomite-carbonate collected from Gachsaran, Aghajari, Dalan, Asmari and Kangan Formations in Zagros basin. To obtain average porosity for each sample digital rock images were obtained using dental and medical CT-scan techniques and analyzed through image processing. In addition, average porosity was determined using nitrogen porosimetry and compared with imaging measurements. Results showed a considerable agreement between CT-scan techniques and average routine porosity method. However, the high-resolution dental CT-scan technique is superior to medical CT-scan technique for porosity determination through image analysis. Moreover, CT-scan responded well for sandstone and calcite-carbonate rocks, but not sufficient to evaluate dolomite-carbonate, marl and salt rocks.