Modification of the Vipulanandan rheological model with correlation for temperature and electrolyte effect on drilling muds

Afolabi, Richard O.; Yusuf, Esther O.

doi:10.1016/j.apt.2019.10.023

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…The rheology of several aqueous suspensions was studied depending on the type and content of bentonite, electrolyte and additives as well as pH-value and aging time [23][24][25][26][27][28]. Also, temperature affected greatly the rheological properties [29,30]. However, thermodynamic nature of aqueous bentonite suspensions has not yet been adequately discussed.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Interpretation on the Rheology of Aqueous Bentonite Suspensions

Bozdoğan¹,

Önal²,

Pekdemir³

et al. 2020

Rev. Chim.

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Since their exceptional rheological behavior, bentonite suspensions are widely used in engineering, industrial, agricultural, and drilling applications. So, the aim of the present study is to investigate the rheological properties of three types aqueous suspensions prepared with calcium bentonite (CaB), sodium bentonite (NaB) obtained from that by Na2CO3 activation, and NaB with the excess soda. The CaB taken from Giresun/Turkey region contains calcium smectite (CaxS) as clay mineral and opal CT (SiO2.nH2O) as impurity which is paracrystalline silica. Soda content by the activation and bentonite content in the suspension were changed in the interval of 2.5-15.0% and 5-20% by mass, respectively. CaxS completely converted to sodium smectite (Na2xS) by the activation with the soda content of 2.5% and then Na2xS+Na2CO3 mixtures formed. Rheological properties of these aqueous suspensions were measured using a Fann Viscometer. These properties reached their maxima by the most thixotropic Na2xS suspensions and greatly increased with the increasing of smectite content. Rheological plots drawn of the shear rate vs. shear stress in the interval of 170-1020 s-1 showed that the suspensions flow as a Bingham Plastic. Change in rheological properties depending on the smectite type and content as well as excess soda content was explained thermodynamically based on the chemical potential gradient between interlayer and dispenser waters.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Interpretation on the Rheology of Aqueous Bentonite Suspensions

Bozdoğan¹,

Önal²,

Pekdemir³

et al. 2020

Rev. Chim.

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Impact of organophilic clay on rheological properties of gasoil-based drilling muds

Bergane

Hammadi

2020

J Petrol Explor Prod Technol

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In this study, the impact of VG69 organophilic clay on the rheological properties of gasoil-based drilling muds (invert emulsions) was investigated. The flow curves of gasoil-based drilling muds as a function of the dose of VG69 organophilic clay were analyzed by the Casson model. The addition of VG69 organophilic clay with a quantity range between 0 and 5 g in gasoil-based drilling muds induces an increase in the yield stress and the viscosity at an infinite shear rate of drilling muds. It is also proven that the addition of VG69 organophilic clay leads to an increase in the viscoelastic and thixotropic properties of the drilling muds. The study of the stability of gasoil-based drilling muds by centrifugation showed that for a quantity of VG69 organophilic clay lower than 3 g, the stability of the drilling muds increases and for a quantity of VG69 organophilic clay higher than 3 g, their stability decreases. The results obtained showed that the addition of 3 g of VG69 organophilic clay to the gasoil-based drilling mud increased the yield stress by 230%, the viscosity at an infinite shear rate by 3.4% and it improved the mud stability by 70%.

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The relationship between the rheological behavior and interlayer bonding properties of 3D printing cementitious materials with the addition of attapulgite

Yao

Xie

et al. 2022

Construction and Building Materials

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Modification of the Vipulanandan rheological model with correlation for temperature and electrolyte effect on drilling muds

Cited by 6 publications

References 21 publications

Thermodynamic Interpretation on the Rheology of Aqueous Bentonite Suspensions

Thermodynamic Interpretation on the Rheology of Aqueous Bentonite Suspensions

Impact of organophilic clay on rheological properties of gasoil-based drilling muds

The relationship between the rheological behavior and interlayer bonding properties of 3D printing cementitious materials with the addition of attapulgite

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