کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6631219 1424940 2018 17 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling the characteristic thermodynamic interplay between potential determining ions during brine-dependent recovery process in carbonate rocks
ترجمه فارسی عنوان
مدلسازی اثر متقابل ترمودینامیکی بین یونهای تعیین پتانسیل در فرآیند بازیافت وابسته به شور در سنگ های کربنات
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کلمات کلیدی
تعامل، بازیابی وابسته به شور، یونهای تعیین کننده بالقوه، پارامترهای ترمودینامیکی، نیروهای سطحی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Brine-dependent recovery processes in carbonate reservoirs have been receiving much attention for the past two decades, and wettability alteration has been identified among the dominant process mechanisms. Most studies suggest that the wettability alteration in carbonate rocks is caused by desorption of oil acid groups from rock surfaces by the adsorbed sulfate, with concomitant co-adsorption of the divalent cations. Although such symbiotic interaction between active ions (Ca2+, Mg2+, and SO42−) and the rock surface has been established, their systematic interplay under different conditions remains to be better explored and understood. In this study, we propose a reactive transport model that considers various reaction sets to investigate the affinity of these active ions toward the rock surface. The important thermodynamic properties were obtained by using the model to interpret single-phase experiments. The model results were in excellent agreement with the produced ion histories reported from single-phase flow through experiments. Using the same thermodynamic parameters, our model also replicated the produced ion histories and oil recoveries obtained during brine-oil flooding experiments. The established thermodynamic parameter can be applied to predict various brine-dependent recovery processes in different carbonate lithology as no significant difference was observed for the interplay between active ions and either chalk or limestone rocks. Accordingly, the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory of surface forces was used to rationalize active ions interactions and to evaluate the contribution of each force component to the wettability change in the oil-brine-rock system. The results emphasize that disjoining pressure and electrostatic interaction energy are sensitive to SO42−/Ca2+ ratio as well as brine salinity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 224, 15 July 2018, Pages 701-717
نویسندگان
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