Gelation Behavior of Model Wax–Oil and Crude Oil Systems and Yield Stress Model Development

When dealing with natural geo–hazards, it is important to understand the influence of sediment sorting on debris flows. The presence of coarse fraction is one of the aspects which affects the rheological behaviour of natural viscous granular fluid mixtures. In this paper, experiments on reconstituted debris flow mixtures with different coarse–to–fine sediment ratios are considered. Such mixtures behave just as non–Newtonian yield stress fluids and their rheological behaviour is largely affected by the presence of coarse fraction. Experimental results demonstrate that yield stress is very sensitive not only to bulk sediment concentration but also to coarse sediment fraction. A novel yield stress model is presented. It accounts for an empirical grading function depending on the coarse–to–fine grain content. The yield stress model performed satisfactorily in comparison with the experiments, showing that it is almost independent of the coarse–to–fine grain fraction in case of dominant coarse sediment content.

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Yield stress measurement of gelled waxy crude oil: Gap size requirement

Journal of Non-Newtonian Fluid Mechanics ◽

10.1016/j.jnnfm.2015.02.001 ◽

2015 ◽

Vol 218 ◽

pp. 71-82 ◽

Cited By ~ 12

Author(s):

A. Japper-Jaafar ◽

P.T. Bhaskoro ◽

L.L. Sean ◽

M.Z. Sariman ◽

H. Nugroho

Keyword(s):

Crude Oil ◽

Yield Stress ◽

Stress Measurement ◽

Gap Size ◽

Waxy Crude Oil ◽

Waxy Crude

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Molten composition B-3 yield stress model

10.1063/1.5044967 ◽

2018 ◽

Author(s):

S. M. Davis ◽

D. K. Zerkle ◽

L. B. Smilowitz ◽

B. F. Henson

Keyword(s):

Yield Stress ◽

Stress Model

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Yield Stress of Alcoflood and Xanthan Polymers Solutions and Their Emulsions with Crude Oil

International Journal of Chemical Engineering and Applications ◽

10.18178/ijcea.2018.9.1.690 ◽

2018 ◽

Vol 9 (1) ◽

pp. 1-8

Author(s):

Mamdouh T. Ghannam ◽

◽

Abdulrazag Y. Zekri ◽

Mohamed Y. E. Selim ◽

Nabil Esmail ◽

...

Keyword(s):

Crude Oil ◽

Yield Stress

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A novel temperature-dependent yield stress model for ceramic materials under indentation

Ceramics International ◽

10.1016/j.ceramint.2019.12.109 ◽

2020 ◽

Vol 46 (7) ◽

pp. 9943-9946

Author(s):

Chaojuan Li ◽

Ruzhuan Wang ◽

Xiaorong Wang ◽

Dingyu Li ◽

Weiguo Li

Keyword(s):

Yield Stress ◽

Ceramic Materials ◽

Stress Model ◽

Temperature Dependent

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Rheological Property of Waxy Crude Oil in Restart Process of Pipeline

2010 8th International Pipeline Conference, Volume 3 ◽

10.1115/ipc2010-31480 ◽

2010 ◽

Author(s):

Yanbo Xu ◽

Qiyu Huang

Keyword(s):

Rheological Property ◽

Crude Oil ◽

Rheological Properties ◽

Yield Stress ◽

Outlet Temperature ◽

Waxy Crude Oil ◽

Time Duration ◽

Waxy Crude

In the restart process of pipeline containing waxy crude oil after shutdown, the rheological properties of oil, including viscosity, yield stress and thixotropy is studied. The entire restart process is decided by various factors; in this paper the effects of outlet temperature, shutdown and restart temperature as well as shutdown time duration to the rheological property are taken into the consideration. The measurements are employed using a controlled shearing rheometer to investigate rheological property based on different restart conditions. In addition, this paper has also researched affection of emulsion and blended samples mixing with two types of crude oil in various ratios. Finally comprehensive rheological evaluation to restartability is obtained.

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