Studies of pressure build‐up due to particle deposition in a micro‐capillary with the use of three‐dimensional trajectory analysis

Arshad, Aziz; Rahman, Mahbubur; Rahman, Sheik S.

doi:10.1002/jctb.280580411

Cited by 3 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The complexity of the flow, such as the recirculation observed, also stipulates that it is not possible to obtain a prediction for the empirical coefficient in the theoretical prediction in Equation (11). This is often the case when considering flow through porous media (Arshad et al, 1993;Civan, 2006). Nevertheless, the relatively good agreement between the slope of the theoretical prediction and the experimental data suggests that the lubrication model is a modest approximation for the internal flow through the pores, at least for a rough estimation of the speed at which the flow occurs.…”

Section: Internal Flow Within the Scaffold Poresmentioning

confidence: 84%

The dynamics of surface acoustic wave‐driven scaffold cell seeding

Bok

Yeo

et al. 2009

Biotech & Bioengineering

View full text Add to dashboard Cite

Flow visualization using fluorescent microparticles and cell viability investigations are carried out to examine the mechanisms by which cells are seeded into scaffolds driven by surface acoustic waves. The former consists of observing both the external flow prior to the entry of the suspension into the scaffold and the internal flow within the scaffold pores. The latter involves micro-CT (computed tomography) scans of the particle distributions within the seeded scaffolds and visual and quantitative methods to examine the morphology and proliferation ability of the irradiated cells. The results of these investigations elucidate the mechanisms by which particles are seeded, and hence provide valuable information that form the basis for optimizing this recently discovered method for rapid, efficient, and uniform scaffold cell seeding. Yeast cells are observed to maintain their size and morphology as well as their proliferation ability over 14 days after they are irradiated. The mammalian primary osteoblast cells tested also show little difference in their viability when exposed to the surface acoustic wave irradiation compared to a control set. Together, these provide initial feasibility results that demonstrate the surface acoustic wave technology as a viable seeding method without risk of denaturing the cells.

show abstract

Section: Internal Flow Within the Scaffold Poresmentioning

confidence: 84%

The dynamics of surface acoustic wave‐driven scaffold cell seeding

Bok

Yeo

et al. 2009

Biotech & Bioengineering

View full text Add to dashboard Cite

show abstract

Control of Fines Migration: A Key Problem in Petroleum Production Industry

Rahman

Arshad

1994

SPE Formation Damage Control Symposium

View full text Add to dashboard Cite

Prevention of formation damage due to release and deposition of fines in reservoirs is important to enhance oil production. It is, therefore, essential to know the critical conditions at which particles release and plug the pore channels. This paper presents a physical model of the process of particle deposition in porous network based on a novel experiment in which suspensions of particles were passed through micro capillaries of different diameters [60 and 100 µm] at different velocities and the rate of particle deposition and consequent pressure build up were monitored. An improved 3D trajectory analysis was developed and it was validated by observing the rate of particle deposition in a micro capillary while injecting bentonite suspensions at different velocities and particle concentrations. A criteria is proposed to predict the critical conditions for particle deposition in a micro capillary. INTRODUCTION Particle's movement and deposition in an oil reservoir mainly depends on the particle's electrophysical properties, the rate of fluid flow and characteristics of the porous media. When immiscible fluids are present in pore spaces, wettability of the particles, relative amount of fluids flowing through the pores and chemical interactions between the particles and the formation fluids also influence the particle movement strongly. Numerous experimental studies have been conducted using sandstone core samples to understand the factors controlling the migration of fine particles in porous network (Muecke, 1979; Gruesbeck and Collins, 1982; Egbogah, 1984; Sarkar and Sharma, 1988; O'Melia and Stum, 1967; Gabriel and Inamdar, 1983). Although a quantitative assessment could not be obtained, the above authors mentioned that the entrainment and deposition of particles at pore restrictions mainly depend on: particle and pore size, concentration of particles, rate of fluid flow, ionic activity of the pore fluids and fluid phases present in pores.

show abstract

Prediction of Critical Condition for Fines Migration in Petroleum Reservoirs

Rahman

Arshad

Chen

1994

SPE Asia Pacific Oil and Gas Conference

View full text Add to dashboard Cite

Formation damage due to fines migration is a threshold type process in that there exists a critical condition at which a petroleum reservoir is susceptible to formation damage. This paper presents a physical model for predicting the critical condition for particle deposition based on experimental data and trajectory analysis. Suspensions (bentonite, kaolinite) were passed through a capillary (100 m) at a controlled flow rate and at the same time, pressure drop across the capillary was monitored. Based on the log jam effect a criterion is proposed to predict the critical condition for particle deposition in porous media. Introduction Petroleum reservoirs contain particles of loose solid materials in the pore surfaces. These particles, often called fines, are not held physically in place by natural cementing material that binds larger sand grains together, instead they are individual particles located at the interior surfaces of the porous matrix. Thus, these particles are free to migrate through the pores along with the fluids that flow in the reservoir. The migration or movement of fines in a sandstone reservoir is usually triggered by the contact of the formation with an incompatible fluid. During migration, these fines are not carried all the way through the formation by the fluids, instead they concentrate at pore restrictions. If certain conditions are met, these particles bridge pore restrictions which leads to pore plugging and a large reduction in permeability. Numerous experimental studies have been conducted on core plugs to understand the factors controlling the migration of the fines in a porous medium (Muecke, 1979; Gruesbeck and Collins, 1982; Egbogah, 1984; Sarkar and Sharma, 1988; O'melia and Stum, 1967, Gabriel and Inamdar, 1983, Rahman et al., 1994). Although a quantitative assessment cannot be made based on core analysis, it is, however, recognised that deposition of fines at pore restrictions largely depends on: particle to pore size ratio, concentration of particles, fluid flow rate, ionic activity of pore fluids and fluid phases present in pores. P. 181^

show abstract

Studies of pressure build‐up due to particle deposition in a micro‐capillary with the use of three‐dimensional trajectory analysis

Cited by 3 publications

References 22 publications

The dynamics of surface acoustic wave‐driven scaffold cell seeding

The dynamics of surface acoustic wave‐driven scaffold cell seeding

Control of Fines Migration: A Key Problem in Petroleum Production Industry

Prediction of Critical Condition for Fines Migration in Petroleum Reservoirs

Contact Info

Product

Resources

About