Measurement of dynamic surface tension using helical flow of a viscous liquid in a pool of another viscous liquid inside a micro-channel

Ganneboyina, Sambasiva Rao; Ghatak, Ajoy

doi:10.1007/s10404-014-1334-x

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…Another highlight concerns the handling of very small volumes of fluids which facilitates the implementation of HP/HT experiments in safe conditions. Even if some microfluidic tensiometers are already described in the literature [11][12][13][14][15][16][17][18][19], most of them do not cover the whole range of IFTs found in EOR applications and some are not compatible with HP/HT conditions and complex crude oils and brines. That is the reason why we have developed a tensiometer based on the analysis of the dripping to jetting conditions in a coaxial flow of two fluids [20].…”

Section: Development Of a Microfluidic Dynamic Tensiometermentioning

confidence: 99%

A New Microfluidic Tensiometer for Optimizing EOR Formulations

Moiré

Peysson

Pannacci

et al. 2016

SPE Improved Oil Recovery Conference

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In the case of surfactant EOR, an optimum formulation of surfactant has to be injected in the reservoir. This so-called optimum formulation corresponds to a minimum in the interfacial tension and a maximum in oil recovery and may be obtained with an appropriate balance of the hydrophobic and hydrophilic affinities of the surfactant. Salinity-scan tests are generally used to screen phase behavior of surfactant formulations before conducting time-consuming coreflood tests. The objective of this study was to develop a high-throughput dynamic microfluidic tensiometer, with the aim of studying interfacial phenomena between EOR injected formulations and crude oils and of optimizing chemical EOR processes for pilot or field applications.We have selected a method based on the Rayleigh-Plateau instability and the analysis of the droplets to jetting transition in a coaxial flow of two fluids. In fact, in coaxial flows, the transition between a droplet and a jetting regime depends on the velocities of each phase, the viscosity ratio, the confinement and the interfacial tension (IFT). As the three first parameters are known, the dynamic interfacial tension can be calculated. This microfluidic device has been specifically designed to support high temperatures (up to 150°C), high pressures (up to 150 bars) and is compatible with complex fluids such as crude oils and solutions of surfactants and polymers.The method was first developed and validated on a microfluidic device on model fluids at ambient temperature and atmospheric pressure for IFTs higher than 1 mN/m. It was then successfully applied for the measurement of IFTs over more than four decades. Measurements were also performed with a crude oil and a typical surfactant formulation. The validation of the HP/HT assembly, which has been designed with the aim to work in reservoir conditions, is currently under progress. By using this tensiometer, it would be quite easy to perform in short time numerous salinity scans on real systems in order to get the evolution of IFT and determine the optimal salinity S*.

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Section: Development Of a Microfluidic Dynamic Tensiometermentioning

confidence: 99%

A New Microfluidic Tensiometer for Optimizing EOR Formulations

Moiré

Peysson

Pannacci

et al. 2016

SPE Improved Oil Recovery Conference

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Novel template digestive fabrication of multi-helical flow reactors

Jada

Ganneboyina

et al. 2023

Chemical Engineering Research and Design

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Hydrodynamics of liquid–liquid parallel flow in novel microextractors: Review

Jada,

Bhaumik

2024

Physics of Fluids

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Parallel flows on microfluidic platforms enable continuous liquid–liquid operations and inline separation of effluent streams, bearing immense scope in integration of miniaturized separation processes. However, these flows face major challenges including low mass transfer efficiency due to lack of transverse convection and flow instability at low flow rates, which undermine their operating range and utility. The limitations have inspired dedicated research, delving into the fundamentals of fluid flow and transport mechanism and exploring novel configurations of microextractors. The current article summarizes the hydrodynamics of parallel flows and relevant process intensification strategies in microfluidic extractors, evolving from the use of straight to curved and helical geometries, besides elucidating unique secondary flow patterns observed in-state-of-the-art designs. It includes exclusive sections addressing various aspects of parallel flows: (i) flow inception and theoretical modeling of flow fields and phase hold up, (ii) challenges concerning interfacial stability and flow intensification, (iii) curvature effects in planar curved geometries, and (iv) curvature cum torsional effects in unique multi-helical configurations. The theoretical perspective of this review presents a roadmap that can provide further insights into design modifications for developing improved integrated microextractors based on parallel flows.

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Measurement of dynamic surface tension using helical flow of a viscous liquid in a pool of another viscous liquid inside a micro-channel

Cited by 4 publications

References 21 publications

A New Microfluidic Tensiometer for Optimizing EOR Formulations

A New Microfluidic Tensiometer for Optimizing EOR Formulations

Novel template digestive fabrication of multi-helical flow reactors

Hydrodynamics of liquid–liquid parallel flow in novel microextractors: Review

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