کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6630086 1424930 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solid-shelled microspheres loaded with solvent as diluents for extracting blockages by heavy-oil and asphaltene precipitates
ترجمه فارسی عنوان
میکروسپرس های جامد پوشیده شده با حلال به عنوان رقیق کننده برای استخراج انسداد توسط روغن سنگین و رسوبات آسفالتین
کلمات کلیدی
میکروسپرسهای جامد خرد شده، شستشو آزادی ناشی از سرقت، نفوذ پذیری پایین، بهبود عملکرد هیدروکربن،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
A novel type of solid-shelled microspheres was prepared by emulsion templating technique through layer-by-layer self assembly. The regulation controlled by different payloads, surfactants, 3-aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS) ratio produced three solid-shelled microspheres with various morphology, sizes, shell thicknesses and brittleness. Such microspheres can be considered as diluent-loaded eggs that can be cracked when forced between narrow rock surfaces or against blocking fluid flow particles. The structural characteristics, size distribution, stability, breakable and release behavior of three payload-in-silica microspheres were investigated by optical microscopy techniques and scanning electron microscopy (SEM) technique, dynamic light scattering (DLS), zeta potential, and ultraviolet-visible (UV-vis) spectroscopy. The results indicated that these three microspheres were relatively uniform in size (1-5 μm) and had a smooth surface with shell thicknesses of 40-120 nm, which also possessed excellent stability. Yet the brittleness of silica shell was obviously different for three solid-shelled microspheres, in detail, the silica shell of toluene microspheres was more brittle and easier to be ruptured than hexane microspheres under external hydrodynamics forces. Sand column tests revealed that the easy-broken toluene-in-silica microspheres prepared from tween-80 template matched the pore throat of reservoir better and achieved higher heavy oil recovery efficiency (94.60%). Such breakable microspheres can provide a selective and targeted diluting approach to extract blockages by heavy-oil and asphaltene precipitates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 234, 15 December 2018, Pages 656-663
نویسندگان
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