Development of a mixer-viscometer for studying rheological behavior of settling and non-settling slurries

Bbosa, Ben; Delle-Case, Emmanuel; Volk, M.; Ozbayoglu, Evren

doi:10.1007/s13202-016-0270-6

Cited by 9 publications

(15 citation statements)

References 18 publications

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“…A mixture viscometer was designed, built and calibrated for this study and the details are published elsewhere (Bbosa 2015;Bbosa et al 2017). …”

Section: Instrumentation For Rheological Characterization Of Settlingmentioning

confidence: 99%

“…The above challenges were addressed while developing mathematical model to translate the measured parameters into viscosity and the details are published elsewhere (Bbosa 2015;Bbosa et al 2017). Sloan and Koh (2008) and Patrick et al (2008) investigated the rheological behavior of hydrate slurries using a concentric cylinder rheometer.…”

Section: Relating Measured Parameters To the Rheological Modelsmentioning

confidence: 99%

“…Rheological characterization of hydrate slurries is critical to developing pipeline operating guidelines and developing rheological models (Eric et al 2013). The rheological characterization of complex fluids has been studied using flowloops (Bbosa 2015;Sinquin et al 2004;Haghighi et al 2007;Hald and Nuland 2007;Gudmundsson 1999, 2000;Lv et al 2012;Chen et al 2014) and a high-pressure mixer-viscometer (Bbosa et al 2017;Camargo et al 2000;Eric et al 2013Eric et al , 2012Ahmad et al 2017;Patrick et al 2008). Some of the measurements on these systems assume that the resulting slurries obey the Newtonian rheological model (Haghighi et al 2007; Andersson and Gudmundsson 2000;Camargo et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Some of the measurements on these systems assume that the resulting slurries obey the Newtonian rheological model (Haghighi et al 2007; Andersson and Gudmundsson 2000;Camargo et al 2000). However, when the measured viscosity was plotted against shear rate, shear thinning behavior was observed (Bbosa 2015;Sinquin et al 2004;Bbosa et al 2017;Eric et al 2012;Ahmad et al 2017;Patrick et al 2008). There are several challenges associated with hydrate slurry characterization.…”

Section: Introductionmentioning

confidence: 99%

“…There are several challenges associated with hydrate slurry characterization. These challenges are associated with the harsh hydrate formation/stable conditions of high pressure and low temperature (Bbosa 2015;Sinquin et al 2004;Andersson and Gudmundsson 2000;Bbosa et al 2017;Camargo et al 2000;Eric et al 2013). Simple rheometers are not designed to operate at high pressure or handle solids or high molecular weight hydrocarbons such as waxes and asphaltenes that may precipitate (Bbosa 2015;Bbosa et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of hydrate formation, plugging and flow properties using a high-pressure viscometer with helical impeller

Bbosa

Ozbayoglu

Volk

2018

J Petrol Explor Prod Technol

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Slurry transport has become a subject of interest in several industries, including oil and gas. The importance of slurry/solid transport in the oil and gas industry is evident in areas of cuttings transport, sand transport and, lately, hydrates. Hydrate formation, if not properly monitored and controlled, may lead to pipeline blockage. To avoid pipeline blockage and other hydrate formation risks, chemical additives are added to the system. Additives such as anti-agglomerants help improve hydrate transportability by dispersing the formed hydrates into slurries and preventing them from sticking to the pipe wall. This enables transportation of highly concentrated slurries. However, the high hydrate volume fractions (HVF) slurries may exhibit complex rheology. There is therefore a great need to correlate flow properties such as friction factor and viscosity to HVF. Hydrate slurry transport is important whether hydrates are deliberately generated for energy storage purposes or hydrates formed because of the prevailing flow conditions. However, when determining the viscosity of a fluid containing solid particles, the conventional viscometer types such as concentric cylinders and cone and plate are often not suitable. This is because either the narrow gap would not accommodate the particle size or their inability to maintain the particles suspended leading to bed formation. In this work, a high-pressure mixer-type viscometer was used to generate and characterize hydrate slurries. This work aims to generate a significant amount of hydrate slurry characterization data that may be used as basis for better rheometer designs, hydrate slurry flow properties modeling or integration of hydrate transportability into general multiphase modeling. Results showed that intermediate watercuts posed the greatest pipeline plugging risk for all the oils tested. The amount of transportable hydrates increased with oil viscosity. Generally, hydrate slurries generated exhibited shear thinning behavior that increased with increasing hydrate volume fraction. However, the overall rheology of these slurries is a complex function of the oil used, watercut, gas added to the system and hydrate solid fraction. Lowering shear rates for high HVF systems resulted in separation. Results in this work further suggest that hydrate transportation may be possible with minimum risk if anti-agglomerants are used and high enough shear is applied. On the other hand, if no anti-agglomerant is used, severe aggregation may result in flow line plugging.

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“…A mixture viscometer was designed, built and calibrated for this study and the details are published elsewhere (Bbosa 2015;Bbosa et al 2017). …”

Section: Instrumentation For Rheological Characterization Of Settlingmentioning

confidence: 99%

Section: Relating Measured Parameters To the Rheological Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental investigation of hydrate formation, plugging and flow properties using a high-pressure viscometer with helical impeller

Bbosa

Ozbayoglu

Volk

2018

J Petrol Explor Prod Technol

Self Cite

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Dynamic rheological properties of sesame protein dispersions

Rafe¹,

Seddighi²,

Mousavi³

et al. 2022

Legume Science

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Interest in utilizing new sustainable protein sources is increasing, and understanding the rheological behavior of sesame protein can be useful in further application. Small amplitude oscillatory shear measurements of sesame protein dispersions at varying concentrations of 5.0%, 7.5%, and 10.0% were examined at both linear and nonlinear regions. Although the sesame protein dispersions showed pseudoplastic behavior, the shear-thickening effect of sesame proteins at higher concentrations makes it possible to apply in beverages without increasing viscosity. The low values of the yield point of the sesame protein explained its feasibility for utilization in varying products such as high-protein-enriched beverages without the adverse effect of the high viscosity. The fracture stress and strain indicated the high strength of the sesame protein to the mechanical changes. The mechanical properties of the sesame proteins also confirmed typical strong gel behavior. The complex viscosity (η*) was decreased linearly with frequency demonstrating the shear thinning phenomenon. The frequency dependency of the protein was shown a low n value that explains a relatively elastic gel structure. These rheological characteristics of the sesame proteins might be more reliable than the previous works on the static rheological behavior, which provides a new horizon in the application of a sustainable protein in food industries.

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