کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8089157 1521941 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Viability of foam to enhance capillary trapping of CO2 in saline aquifers-An experimental investigation
ترجمه فارسی عنوان
پایداری فوم برای افزایش تساوی مویرگهای دی اکسید کربن در آبخوان شور، یک مطالعه تجربی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Capillary trapping is one of the quickest mechanism by which carbon dioxide (CO2) is trapped during geological sequestration. It is also of the most immediate importance because a significant fraction of the injected CO2 can be stored and rendered immobile in the event of a leak. Many research papers have been published in the past decade focusing on improving capillary trapping of CO2 during geological sequestration. In this study, a different approach was investigated, which involved the use of colloidal materials to enhance capillary trapping of CO2 during sequestration in saline aquifers. A suite of reservoir condition laboratory experiments was conducted on some selected reservoir rock samples saturated with synthetic brine to mimic actual saline aquifers. A foaming agent (0.025% wt. nonionic surfactant) was dissolved in the brine. Foams were then generated in the rock samples by alternate injection of gas and brine using a coreflooding setup. An electrical resistivity measuring tool attached to the setup was used for real-time and in-situ tracking of pore-scale events such as gas movement, capillary trapping of gas, and the stability of the trapped gas. Both Nitrogen (N2) and CO2 gases were investigated and the results showed a tremendous increase in the amount of trapped N2 and CO2 gases when foams were applied compared to gas injection without foams. However, low interfacial tension between CO2 and the surfactant solution affected the viability of foams in trapping CO2. Nevertheless, the use of CO2 foam stabilizers is promising in addressing this challenge. The methodology described in this paper can be used to test the efficiency of a variety of CO2 foam stabilizing agents that may be developed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Greenhouse Gas Control - Volume 78, November 2018, Pages 117-124
نویسندگان
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