Investigation of Rheological Properties of water in crude oil emulsions

  • سال انتشار: 1385
  • محل انتشار: ششمین همایش ملی دانشجویی مهندسی شیمی و پنجمین همایش ملی دانشجویی مهندسی نفت
  • کد COI اختصاصی: SCCE06_095
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 1982
دانلود فایل این مقاله

نویسندگان

بابک درخشنده

Department of Chemical and Petroleum Engineering Sharif University of Technology

محمد عسکری

Department of Chemical and Petroleum Engineering Sharif University of Technology

احمد رمضانی

Department of Chemical and Petroleum Engineering Sharif University of Technology

چکیده

Water and oil can make emulsions. Oil in water and water in oil emulsions have the same behavior in general but there are less information about water in oil emulsions. Rheological properties of these systems are very important. In this research we made different samples with different characteristics, some of them had surfactant and others without it. Then we investigated the different rheological properties of such systems. We measure viscosity variation of such systems versus shear rate variations, different water volume fractions and effect of adding surfactants to these systems. It is shown that these systems have a Newtonian viscosity below a certain shear rate and pseudo plastic behavior above that. Relative viscosity increases by increasing water volume fraction but after a certain value it increases sharply until it goes to infinity at a certain value. Our investigations showed that elastic modulus is low in moderate water volume fractions after a certain volume fraction elastic modulus increases sharply that shows there is a phase transition. Moreover, we find loss and storage modulus variations versus shear rate variations. In all cases G' showed a linear behavior and then a nonlinear behavior after that.

کلیدواژه ها

Emulsion, Rheology, Viscoelasticity, Crude oil

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.