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Saadat, Kazem, Rahimpour-Bonab, Hossain, Esfahani, Mohammad Reza, vali, jafar. (1390). Empirical correlation for porosity deduction from X-ray computed tomography (CT). , 1(2), 47-54. doi: 10.22059/jgeope.2011.23283
Kazem Saadat; Hossain Rahimpour-Bonab; Mohammad Reza Esfahani; jafar vali. "Empirical correlation for porosity deduction from X-ray computed tomography (CT)". , 1, 2, 1390, 47-54. doi: 10.22059/jgeope.2011.23283
Saadat, Kazem, Rahimpour-Bonab, Hossain, Esfahani, Mohammad Reza, vali, jafar. (1390). 'Empirical correlation for porosity deduction from X-ray computed tomography (CT)', , 1(2), pp. 47-54. doi: 10.22059/jgeope.2011.23283
Saadat, Kazem, Rahimpour-Bonab, Hossain, Esfahani, Mohammad Reza, vali, jafar. Empirical correlation for porosity deduction from X-ray computed tomography (CT). , 1390; 1(2): 47-54. doi: 10.22059/jgeope.2011.23283

Empirical correlation for porosity deduction from X-ray computed tomography (CT)

Geopersia
مقاله 7، دوره 1، شماره 2 - شماره پیاپی 619523، بهمن 2011، صفحه 47-54    اصل مقاله (1.72 M)
شناسه دیجیتال (DOI): 10.22059/jgeope.2011.23283
نویسندگان
Kazem Saadat1؛ Hossain Rahimpour-Bonab2؛ Mohammad Reza Esfahani1؛ jafar vali1
1RIPI,Production Research Center
2University of Tehran
چکیده
For obtaining reservoir petrophysical properties, for example porosity, non-destructive methods such as X-ray computed
tomography, CT, seems to be precise and accurate. Porosity is deducted from the CT image with a single scan via
different techniques, such as pore space detection by image segmentation techniques then correlation with porosity. More
than one hundred samples with carbonate lithology have been scanned and analyzed in this study which leads to empirical
correlation used for porosity calculation from CT data. The samples mainly grouped as dolostone, limestone and
carbonate with respect to their mineral contents, having porosity ranges between 4.56 to 30.5 % and permeability from
0.25 to 3350.8 md. The results showed that the effect of atomic number is higher than the density on CT image. It is
because density and atomic number in carbonate mineral (calcite and dolomite) show diverse relations. Thus, the
assumption of known lithology would be a large source of error. A good linear relationship exists between the porosity
and CT no. according to the developed correlations.
کلیدواژه‌ها
Carbonate؛ Computed tomography (CT)؛ Dolestone؛ limestone؛ Porosity
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