کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8126102 1522796 2016 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of petrophysical properties using pore-network and lattice-Boltzmann modelling: Choice of method and image sub-volume size
ترجمه فارسی عنوان
خصوصیات خواص پتروفیزیکی با استفاده از مدل شبکه خالص و شبکهای-بولتزمن: انتخاب روش و اندازه حجم زیر حجم
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی
The image-based modelling and analysis of the absolute permeabilities gave values within a similar range of the experimental results for all three of the sandstone samples. Results deviated greatly for the limestone due to the presence of unresolvable pore space, reflecting the need to acquire higher resolution data to obtain a full digital description of the samples at hand. The variation in the petrophysical parameters with the size of the selected subvolume (either 512 or 1024 voxels) is the focus in the present study. With the notable exception of Clashach, the homogeneous sandstones do give the same results for the two subset sizes. The limestone data varies by more than a factor of four for the permeabilities whereas the porosity varies by less than a factor of two. The extracted pore size distributions vary quite significantly from the experimental ones regardless of the subset size and the bimodal nature of the limestone pore space is not captured at all. This is reflected in the capillary pressure curves, the image-based ones are significantly different from the experimental ones. The reconstructed 3D acquisitions and 2D slices will be posted online to form a database that allows for download of the tomographic images and extracted pore spaces to serve as a resource for future comparative modelling studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Petroleum Science and Engineering - Volume 145, September 2016, Pages 256-265
نویسندگان
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