نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده مهندسی نفت، دانشگاه صنعتی امیرکبیر،تهران، ایران
2 دانشکده مهندسی نفت، دانشگاه صنعتی امیرکبیر، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Determining the representative elementary volume is of utmost importance. This challenge of defining the representative elementary volume plays a critical role due to the necessity for precise determination of the petrophysical properties of a porous sample. In this research, digital rock physics methods were employed to determine the representative elementary volume in a sandstone sample. Initially, via image processing algorithms including denoising, segmentation, and cropping, 10 subsamples were extracted regularly from the original sample. Petrophysical and two-phase flow properties such as effective porosity, total porosity, tortuosity, effective permeability, relative permeability, residual oil saturation, maximum water relative permeability, intersection points in relative permeability curves for water and oil, as well as the average pore radius, average throat radius, and coordination number were calculated for each sub-sample using image processing and pore network modeling. By plotting various parameter curves versus sub-sample sizes, the representative elementary volume was approximately determined to be 6003. Proper selection of the representative elementary volume enhances the accuracy of modelling and simulations while supporting cost and time reduction in studies. These results demonstrate the high significance of employing digital rock physics methods for determining the representative elementary volume for further analysis.
کلیدواژهها [English]
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