Rheological behavior of fumed silica filled polyethylene oxide

2019 ◽  
Vol 57 (7) ◽  
pp. 397-405 ◽  
Author(s):  
Qingxu Zhang ◽  
Huilong Xu ◽  
Yihu Song ◽  
Qiang Zheng
Keyword(s):  
Polyethylene Oxide ◽  
Rheological Behavior ◽  
Fumed Silica

Development of a Fracturing Nanofluid with Dual Purpose: Increasing Heavy Oil Mobility and Reducing the Reservoir Damage Associated at the Remaining Fracture Fluid

2021 ◽  
Author(s):  
Maria Alejandra Giraldo ◽  
Richard Zabala ◽  
Jorge Ítalo Bahamon ◽  
Camilo Mazo ◽  
Juan David Guzmán ◽  
...  
Keyword(s):  
Crude Oil ◽  
Rheological Behavior ◽  
Fumed Silica ◽  
Rock Sample ◽  
Formation Damage ◽  
Heavy Crude Oil ◽  
Fracturing Fluid ◽  
Dual Purpose ◽  
Fracture Fluid ◽  
Heavy Crude

Abstract This work aims to develop a fracturing nanofluid with a dual purpose: i) to increase heavy crude oil mobility and ii) to reduce formation damage caused by the remaining fluid. Three commercial nanoparticles were evaluated: two fumed silica of different sizes and one type of alumina. They were acidified and basified, obtaining nine nanoparticles (NPs) by the surface modification, characterized by TEM, DLS, Z Potential and Total Acidity. The effect of adding nanoparticles at different concentrations onto the linear gel and heavy crude oil was determined by their rheological behavior. Also, there was assessed the alteration of the rock wettability by contact angle for all NPs and concentrations. Based on these results, the nanoparticle with better performance was the neutral fumed silica of 7 nm at 1000 mg/L. These were used to make a fracturing nanofluid from a commercial fracturing fluid (FF). Both of them were evaluated through their rheological behavior overtime at high pressure following the API RP39 test and quantitative measurements of the rock sample wettability changes. Displacement tests also were performed on proppant and rock samples at reservoir conditions: pressure and temperature. Finally, there was evaluated the rheological behavior of the crude oil recovered in the displacement test. It was possible to conclude that the inclusion of nanoparticles allowed obtaining a reduction of 10 and 20% in the two breakers used in the commercial fracture fluid formulation. An alteration of the rock wettability was achieved, where the rock sample became up to 50% more wettable to water. Moreover, there was a diminution of 53% in the damage caused by the remaining fracturing fluid to the oil effective permeability in the proppant medium. In the rock sample, a decrease of 31% of this kind of damage was observed. Increases of 28 and 18 % in the crude oil recovery were noticed in the proppant and the rock sample, respectively. Finally, there was a reduction of 40% in the crude oil viscosity, showing the effectiveness of adding nanoparticles to fracturing fluids for increasing oil mobility and reducing the formation damage.

Rheological behavior of fumed silica suspension in polyethylene glycol

2006 ◽  
Vol 13 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Qiu-mei Wu ◽  
Jian-ming Ruan ◽  
Bai-yun Huang ◽  
Zhong-cheng Zhou ◽  
Jian-peng Zou
Keyword(s):  
Polyethylene Glycol ◽  
Rheological Behavior ◽  
Fumed Silica ◽  
Silica Suspension

scholarly journals Effect of Polyethylene Oxide on the Rheological Behavior of Bentonite Suspensions

2021 ◽  
Vol 2 (5) ◽  
pp. 352-357
Author(s):  
Azril N ◽  
Gareche M ◽  
Saoudi L ◽  
Zeraibi N
Keyword(s):  
Molecular Weight ◽  
Rheological Properties ◽  
Yield Stress ◽  
Polyethylene Oxide ◽  
Rheological Behavior ◽  
Complex Behaviour ◽  
Clay Particles ◽  
Viscoelastic Modulus ◽  
Bentonite Suspension ◽  
Basic Characteristics

The effect of Polyethylene Oxide (PEO) with a molecular weight 10000g/mol on the rheological behavior of bentonite suspension was examined in terms of viscosity, yield stress and viscoelastic modulus (G’ and G’’); characteristic of complex behaviour of montmorillonite in water. A Physica MCR301 rheometer has been used to measure the rheological properties of samples (6% bentonite) as well as bentonite-PEO mixtures at different concentrations of PEO (0.18%, 0.25%, 0.5% and 1%). The polyethylene oxide adsorbs onto clay particles, which changes their basic characteristics depending on the amount of PEO adsorbed.

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