کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
1742683 1017708 2008 15 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Estimation of wettability in gas-liquid-rock systems
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Estimation of wettability in gas-liquid-rock systems
چکیده انگلیسی
The wettability in gas-liquid-rock systems, including geothermal (steam-water-rock) systems, is central to defining the relative permeability and capillary pressure, which govern the forecasts of future production and reinjection performance. Since the frequently used Amott and USBM approaches are appropriate only for specific liquid-liquid-rock systems, we developed a model to evaluate the wettability in gas-liquid-rock systems. The method can be applied to determine the wettability at specific wetting-phase saturation if the capillary pressure and relative permeability at this fluid saturation are known. The proposed model can also be used in liquid-liquid-rock systems. The validity of the technique was tested qualitatively and quantitatively using experimental data from different rock-fluid systems. The calculated wettability indices in gas-liquid-rock systems were higher than in liquid-liquid-rock systems, as expected. Results also show that the wettability index calculated using the new method may or may not be independent of fluid saturation in the cases studied. In addition, the wettability index in drainage was seen to be greater than that in imbibition, a wettability difference that is particularly important in steam-water-rock (geothermal) systems because of the impact on reinjection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geothermics - Volume 37, Issue 4, August 2008, Pages 429-443
نویسندگان
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