Migrations of Fines in Porous Media

Khilar, Kartic C.; Fogler, H. Scott

doi:10.1007/978-94-015-9074-7

Cited by 289 publications

(168 citation statements)

References 75 publications

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“…These are much smaller than the size the pore throats of the porous medium. Due to this size difference, the curvature of the mineral surfaces may be neglected and the interactions can be modelled as Sphere-Plate collector geometry [8,20,[25][26][27]. The forces acting on a particle approaching a mineral surface are the sum of van der Waals attraction, electric double layer repulsion and Born repulsion.…”

Section: Surface Forcesmentioning

confidence: 99%

“…In this study, all the experiments are conducted at room temperature hence T = 297 K. The contributions due to the different types of interactions in Equation (1) can be calculated as follows [8,25,26]:…”

Section: Surface Forcesmentioning

confidence: 99%

“…Based on previous works which are in turn based on the expression for modified Hamaker's constant developed by Israelachvili, the Hamaker's constant in this study is taken to be equal to 10 −21 J [8]. Also, ε 0 is the permittivity of free space (8.854 × 10 −12 C 2 J −1 m −1 ) and D e is the dielectric constant of water equal to 78 [8,26]. κ is the inverse Debye length.…”

Section: Surface Forcesmentioning

confidence: 99%

“…For pure water used in this study, the inverse Debye length is equal to (9.6 × 10 −7 ) −1 m −1 [8]. ζ p and ζ s are the surface potentials of the particles and the surface respectively which can be replaced by the zeta potential [26]. In Equation (5), σ is the atomic collision diameter and is equal to 0.5 nm [26].…”

Section: Surface Forcesmentioning

confidence: 99%

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Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Abhishek

Hamouda

2017

Applied Sciences

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This work is aimed at addressing surface modification of berea sandstone by silica nanofluids (NFs). Three types of nanofluids were used: silica/deionized water (DIW), silica in DIW with a stabilizer fluid (3-Mercaptopropyl Trimethoxysilane) and sulfonate-functionalized silica in DIW. Core flood studies showed that application of silica nanoparticles (NPs) improved water injectivity in sandstone. The change in the measured zeta potential indicated surface modification of sandstone by application of NPs. Computation of the surface forces showed that the modified berea sandstone has net attractive potential with fines (obtained from water/rock interaction) leading to reduction of fines migration, hence improvement of water injectivity. It was also observed that the silica NPs have greater affinity to adhere/adsorb on quartz surfaces than kaolinite in berea core. This was confirmed by scanning electron microscope imaging and isothermal static adsorption tests. Although the stabilizing of NFs almost did not reduce the fine migration, as was qualitatively indicated by the pressure drop, it enhanced the NPs adsorption on the minerals as obtained by isothermal static adsorption tests. The reduction of fines migration due surface modification by silica NP suggests that NPs can be utilized to overcome the problem of formation damage induced during low salinity flooding in sandstones.

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Section: Surface Forcesmentioning

confidence: 99%

Section: Surface Forcesmentioning

confidence: 99%

Section: Surface Forcesmentioning

confidence: 99%

Section: Surface Forcesmentioning

confidence: 99%

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Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Abhishek

Hamouda

2017

Applied Sciences

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“…The fluid of particles in liquid is called the suspension. Fine migrationone-dimensional problem of particle filtration in the solid porous medium during its displacement with pure water is considered [2,3]. The pores in the filter form intersecting channels of different lengths and shapes.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Fine Migration in a Porous Medium

Galaguz

Safina

2016

MATEC Web Conf.

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Abstract. The structure of underground waters and water permeability of rocks must be taken into account when choosing the location of construction objects, the design of tunnels, hydraulic and underground structures. The model of filtration for suspension in solid porous medium during its displacement with clean water is considered. The numerical calculation of boundary of two phases is carried out and concentrations of suspended and retained particles are calculated for different values of porosity and permeability of the porous medium.

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Particle mobilization in porous media: Temperature effects on competing electrostatic and drag forces

You

Bedrikovetsky

Badalyan

et al. 2015

Geophysical Research Letters

108

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The fluid flow in natural reservoirs mobilizes fine particles. Subsequent migration and straining of the mobilized particles in rocks greatly reduce reservoir permeability and well productivity. This chain of events typically occurs over the temperature ranges of 20–40°C for aquifers and 120–300°C for geothermal reservoirs. However, the present study might be the first to present a quantitative analysis of temperature effects on the forces exerted on particles and of the resultant fines migration. Based on torque balance between electrostatic and drag forces acting on attached fine particles, we derived a model for the maximum retention concentration and used it to characterize the detachment of multisized particles from rock surfaces. Results showed that electrostatic force is far more affected than water viscosity by temperature variation. An analytical model for flow toward wellbore that is subject to fines migration was derived. The experiment‐based predictive modeling of the well impedance for a field case showed high agreement with field historical data (coefficient of determination R2 = 0.99). It was found that the geothermal reservoirs are more susceptible to fine particle migration than are conventional oilfields and aquifers.

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Migrations of Fines in Porous Media

Cited by 289 publications

References 75 publications

Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Modeling of Fine Migration in a Porous Medium

Particle mobilization in porous media: Temperature effects on competing electrostatic and drag forces

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