Experimental study on the wall factor for spherical particles settling in parallel plates filled with power-law fluids

Song, Xianzhi; Zhu, Zhaopeng; Xu, Zhengming; Li, Gensheng; Faustino, Matsimbe Atanasio; Chen, Changchang; Jiang, Tianwen; Xie, Xin

doi:10.1016/j.petrol.2019.05.018

Cited by 16 publications

(3 citation statements)

References 43 publications

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“…Studies have shown that the wall retardation effect decreases with the decrease in the power-law fluid fluidity indicator n. Malhotra [49] and Zhang [50] experimentally studied the wall retardation effect of particles in elastic fluid, and the results showed that fluid elasticity can decrease the wall retardation role. Song [51] studied the influence of power-law fluid and viscoelastic fluid on the wall retardation role in parallel plates, and the device used is displayed in Figure 5. The outcomes show that in the case of a dimensionless diameter of below 0.057, the wall-blocking effect disappears.…”

Section: Transition Region and Turbulencementioning

confidence: 99%

A Review of the Settling Law of Drill Cuttings in Drilling Fluids

Hou,

Yuan,

Chen

et al. 2023

Processes

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During the drilling process, cuttings settle under the action of gravity, which easily results in the formation of a cuttings bed, which then results in wellbore cleaning problems. The settling law of cuttings in drilling fluid is essentially a problem of solid–liquid two-phase settling. This study analyzes and summarizes the effects of the wall effect, the rheology of the fluid, particle shape irregularity, and particle concentration on the settling rate of particles and clarifies the problems faced by current research on the settling rate of particles and the development direction. Studies have shown that walls exert additional blocking effects on particles, thus reducing their settling velocity. The shear thinning effect of non-Newtonian fluids such as power-law fluids and Herschel–Bulkley fluids will reduce the viscosity of the liquid, thus increasing the settling velocity of the particles. Compared with spherical particles, irregular particles will obtain higher resistance in the fluid, leading to a decline in the particle settling velocity. The mutual interference between particles will result in an increase in the drag force on the particles and a decline in the settling velocity. However, when the particles are aggregated, the settling velocity will increase. This study can provide theoretical guidance for predicting the migration law of cuttings during the drilling of horizontal wells, and it has important significance for enriching the theory of solid–liquid two-phase flow.

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Section: Transition Region and Turbulencementioning

confidence: 99%

A Review of the Settling Law of Drill Cuttings in Drilling Fluids

Hou,

Yuan,

Chen

et al. 2023

Processes

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“…Zheng et al 23 investigated the settling law of particles in a power-law fluid in detail, analyzed the influence of particle morphology on the drag coefficient, and revised the prediction model of the non-spherical particle settling rate. During particle sedimentation experiments in different conventional round tubes, Song et al 24 analyzed the effect of the wall leads on the settling velocity by changing the plate distance. The variation in the wall leads in power-law fluids with different concentrations was characterized.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Proppant Settling Velocity in Fiber-Containing Fracturing Fluids

Bai,

2023

ACS Omega

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Hydraulic fracturing is the main stimulation method in the development of oil and gas fields. It is helpful to predict the fracture support effect during fracturing by calculating the settling velocity of particles in the fracturing fluid. Experimental research shows that fibers mixed into the fracturing fluid can improve the performance of suspended sand. In this study, fiber was considered a solvent in the fracturing fluid, and the constitutive model of the fiber-containing fracturing fluid was modified according to the fluid rheology. From the analysis of the mechanical behavior in the fibercontaining fluid, the settling velocity of particles slowed down because of some reasons. First, the viscosity of the fiber-containing fracturing fluid increased significantly. The other mechanism is the resistance mechanism of the fiber acting on the particle. The apparent viscosity was fitted based on the rheological model and the measurements. Then, the drag coefficient model of the settling particles was built according to the rheological data of the fibrous fluid. A semi-empirical model was developed to predict the terminal settling velocity through research on dynamics. By characteristic analysis of the results, we found that the fiber on the settling velocity is closely related to the concentration of the base fluid. This prediction model is suitable for the base fluid and fiber-containing fracturing fluid, and the average relative difference between the prediction model and measurements was acceptable.

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“…The interesting work of Carreau [25] deals with the mathematical structure of deformation rate and shear forces with the idea of molecular network owing to higher and lower shear rates. Many investigators examine the complicated structure and features of nonlinear fluid models with help of power law fluid as it results in very excellent agreement between experimental and theoretical simulations [26][27][28][29][30][31][32].…”

mentioning

confidence: 99%

Assessment of boundary layer for flow of non‐Newtonian material induced by a moving belt with power law viscosity and thermal conductivity models

Hassan

Al‐Khaled

Khan

et al. 2021

Numerical Methods Partial

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The non‐Newtonian fluids have become quite prevalent in industry and engineering for different applications. When these fluids flow over industrial equipment, a boundary layer phenomenon is developed due surface friction of equipment. In this work, a boundary layer phenomenon for two famous non‐Newtonian fluids namely pseudoplastic and dilatant over moving belt is discussed. The physical problem is modeled through continuity, momentum and energy equations under boundary layer assumptions. In these equations, power law models for viscosity and thermal conductivity properties are used due to the non‐linear nature of fluids. The governing equations are reduced to ordinary differential equations via similarity variables and get the analytical solution by using Mathematica package BVPh 2. The assessment of boundary layer against dimensionless velocity and temperature distribution are calculated and displaced by graphically when the belt is moving in the same and opposite direction to flow and displayed graphically. In addition, momentum and thermal boundary layers thicknesses, the thickness momentum distribution and moving fluid surface are calculated numerically to understand the boundary layer structure and the deflation in mass flow rate and in the momentum flux. A progress trend for thermal as well as momentum boundary layers has been noticed and found the maximum discrepancy in mass flow rate in case of dilatant fluid. The thickness of boundary layer region is thicker for dilatants material due to higher viscosity.

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Experimental study on the wall factor for spherical particles settling in parallel plates filled with power-law fluids

Cited by 16 publications

References 43 publications

A Review of the Settling Law of Drill Cuttings in Drilling Fluids

A Review of the Settling Law of Drill Cuttings in Drilling Fluids

Prediction of Proppant Settling Velocity in Fiber-Containing Fracturing Fluids

Assessment of boundary layer for flow of non‐Newtonian material induced by a moving belt with power law viscosity and thermal conductivity models

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