The Effect of Dispersed Phase Salinity on Water-in-Oil Emulsion Flow Performance: A Micromodel Study

In this work, the effect of brine salinity on water-in-oil emulsion flow performance in porous media is studied as it imposes a significant challenge to oil production in the petroleum industry. A crude oil sample from an Iranian oilfield and synthetic brine with different salinities (40–140 g/L salt) are used. The results show that the emulsion viscosity and interfacial tension increase slightly with salinity, while they do not considerably affect the flow behavior. The emulsion stability analysis shows that larger w/o emulsion droplets are formed for higher brine salinity, which potentially block more pore spaces through straining and interception mechanisms. This phenomenon resulted in lower emulsion recovery and higher pressure changes at a higher brine salinity. The emulsion recovery at higher brine salinity was 12.5% less than that of the lower one. The tests show that some of the captured droplets could re-entrain into the main flow stream at higher capillary numbers, resulting in a better sweep ef...

[1]  S. Ayatollahi,et al.  Numerical investigation of two phase flow in micromodel porous media: Effects of wettability, heterogeneity, and viscosity , 2017 .

[2]  A. Firoozabadi,et al.  Nonmonotonic Elasticity of the Crude Oil-Brine Interface in Relation to Improved Oil Recovery. , 2016, Langmuir : the ACS journal of surfaces and colloids.

[3]  Effah Yahya,et al.  The Rheology of Light Crude Oil and Water-In-Oil-Emulsion , 2016 .

[4]  A. Bera,et al.  Modeling of flow of oil-in-water emulsions through porous media , 2015, Petroleum Science.

[5]  Sebastian Geiger,et al.  Droplet fragmentation: 3D imaging of a previously unidentified pore-scale process during multiphase flow in porous media , 2015, Proceedings of the National Academy of Sciences.

[6]  Mahdi Kazempour,et al.  Dynamic flow response of crude oil-in-water emulsion during flow through porous media , 2014 .

[7]  Shahab Ayatollahi,et al.  Effect of Salinity, Resin, and Asphaltene on the Surface Properties of Acidic Crude Oil/Smart Water/Rock System , 2014 .

[8]  T. A. Jones,et al.  Treatment of Water in Heavy Crude Oil Emulsions with Innovative Microemulsion Fluids , 2014 .

[9]  S. Ayatollahi,et al.  Toward mechanistic understanding of heavy crude oil/brine interfacial tension: The roles of salinity, temperature and pressure , 2014 .

[10]  A. Bera,et al.  Physicochemical Characterization of Anionic and Cationic Microemulsions: Water Solubilization, Particle Size Distribution, Surface Tension, and Structural Parameters , 2014 .

[11]  A. Firoozabadi,et al.  Macro- and Microscale Waterflooding Performances of Crudes which form w/o Emulsions upon Mixing with Brines , 2014 .

[12]  D. Bendedouch,et al.  Water pH and surfactant addition effects on the stability of an Algerian crude oil emulsion , 2012 .

[13]  K. Ojha,et al.  Water solubilization capacity, interfacial compositions and thermodynamic parameters of anionic and cationic microemulsions , 2012 .

[14]  Anthony R. Kovscek,et al.  Creation of a dual-porosity micromodel for pore-level visualization of multiphase flow , 2012 .

[15]  M. Carvalho,et al.  Pore Scale and Macroscopic Displacement Mechanisms in Emulsion Flooding , 2012, Transport in Porous Media.

[16]  M. Abdel-raouf.  Crude Oil Emulsions - Composition Stability and Characterization , 2012 .

[17]  M. Carvalho,et al.  Experiments and network model of flow of oil-water emulsion in porous media. , 2011, Physical review. E, Statistical, nonlinear, and soft matter physics.

[18]  Jay W. Grate,et al.  Influence of Viscous and Capillary Forces on Immiscible Fluid Displacement: Pore-Scale Experimental Study in a Water-Wet Micromodel Demonstrating Viscous and Capillary Fingering , 2011 .

[19]  Wanli Kang,et al.  Stability mechanism of W/O crude oil emulsion stabilized by polymer and surfactant , 2011 .

[20]  K. Ojha,et al.  Water Solubilization Capacity and Conductance Behaviors of Anionic and Cationic Microemulsion Systems , 2011 .

[21]  S. Huzurbazar,et al.  Effect of Salinity on Water-in-Crude Oil Emulsion: Evaluation through Drop-Size Distribution Proxy , 2011 .

[22]  Achinta Bera,et al.  Characterization of Oil-Water Emulsion and Its Use in Enhanced Oil Recovery , 2010 .

[23]  M. Dong,et al.  Experimental and Numerical Study of Improving Heavy Oil Recovery by Alkaline Flooding in Sandpacks , 2010 .

[24]  R. Idem,et al.  Numerical Simulation of Displacement Mechanisms for Enhancing Heavy Oil Recovery during Alkaline Flooding , 2009 .

[25]  R. Idem,et al.  Determination of Water-in-Oil Emulsion Viscosity in Porous Media , 2009 .

[26]  Xiuyu Wang,et al.  Direct current electrorheological stability determination of water-in-crude oil emulsions. , 2009, The journal of physical chemistry. B.

[27]  Jialu Wang,et al.  Study of Enhanced-Oil-Recovery Mechanism of Alkali/Surfactant/Polymer Flooding in Porous Media From Experiments , 2009 .

[28]  E. Dickinson,et al.  Bubble stability in the presence of oil-in-water emulsion droplets: Influence of surface shear versus dilatational rheology , 2009 .

[29]  Liang-Cheng Chang,et al.  Experimental study on imbibition displacement mechanisms of two-phase fluid using micro model , 2009 .

[30]  I. M. Mishra,et al.  Oil field effluent water treatment for safe disposal by electroflotation , 2008 .

[31]  C. P. Whitby,et al.  Rheological behavior of water-in-oil emulsions stabilized by hydrophobic bentonite particles. , 2005, Langmuir : the ACS journal of surfaces and colloids.

[32]  P. M. Spiecker,et al.  Interfacial rheology of petroleum asphaltenes at the oil-water interface. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[33]  Merv Fingas,et al.  Formation of water-in-oil emulsions and application to oil spill modelling. , 2004, Journal of hazardous materials.

[34]  H. Yarranton,et al.  Asphaltene self-association and water-in-hydrocarbon emulsions. , 2003, Journal of colloid and interface science.

[35]  S. M. Ali,et al.  Combined Polymer and Emulsion Flooding Methods for Oil Reservoirs With a Water Leg , 2003 .

[36]  S. Kokal.  Crude Oil Emulsions: A State-Of-The-Art Review , 2005 .

[37]  Matthew D. Jackson,et al.  Detailed physics, predictive capabilities and macroscopic consequences for pore-network models of multiphase flow. , 2002 .

[38]  M. Blunt.  Flow in porous media — pore-network models and multiphase flow , 2001 .

[39]  Hussein,et al.  Water-in-Hydrocarbon Emulsions Stabilized by Asphaltenes at Low Concentrations. , 2000, Journal of colloid and interface science.

[40]  Rajinder Pal,et al.  Shear Viscosity Behavior of Emulsions of Two Immiscible Liquids. , 2000, Journal of colloid and interface science.

[41]  Mingzhen Wei,et al.  Selective Water Shutoff Technology Study and Application of W/O Emulsions , 2000 .

[42]  McLean,et al.  Effects of Asphaltene Aggregation in Model Heptane-Toluene Mixtures on Stability of Water-in-Oil Emulsions , 1997, Journal of colloid and interface science.

[43]  Peter K. Kilpatrick,et al.  Effects of Asphaltene Solvency on Stability of Water-in-Crude-Oil Emulsions , 1997 .

[44]  R. Pal.  Effect of droplet size on the rheology of emulsions , 1996 .

[45]  P. Luckham,et al.  Dewatering of crude oil emulsions 2. Interfacial properties of the asphaltic constituents of crude oil , 1993 .

[46]  J. Sjöblom,et al.  Stabilization and destabilization of water-in-crude oil emulsions from the norwegian continental shelf. Correlation with model systems , 1992 .

[47]  M. R. Islam,et al.  Numerical Simulation of Emulsion Flow Through Porous Media , 1994 .

[48]  S. Thomas,et al.  Flow of emulsions in porous media, and potential for enhanced oil recovery , 1989 .

[49]  Cesar Zarcone,et al.  Numerical models and experiments on immiscible displacements in porous media , 1988, Journal of Fluid Mechanics.

[50]  Clayton J. Radke,et al.  A filtration model for the flow of dilute, stable emulsions in porous media. II: Parameter evaluation and estimation , 1986 .

[51]  Clayton J. Radke,et al.  A filtration model for the flow of dilute, stable emulsions in porous media. I: Theory , 1986 .

[52]  C. Radke,et al.  Velocity effects in emulsion flow through porous media , 1984 .

[53]  C. Radke,et al.  Flow mechanism of dilute, stable emulsions in porous media , 1984 .

[54]  Sullivan S. Marsden,et al.  Flow of Oil-in-Water Emulsions Through Tubes and Porous Media , 1979 .

[55]  A. W. Talash,et al.  Analysis of Salem Low-Tension Waterflood Test , 1977 .

[56]  J. W. Ware,et al.  Low-Tension Waterflood Pilot at the Salem Unit, Marion County, Illinois Part 1: Field Implementation and Results , 1977 .

[57]  R. H. Widmyer,et al.  Low-Tension Waterflood Pilot at the Salem Unit, Marion County, Illinois Part 2: Performance Evaluation , 1977 .

[58]  C. Mcauliffe.  Crude-Oil-Water Emulsions to Improve Fluid Flow in an Oil Reservoir , 1973 .

[59]  Clayton D. McAuliffe,et al.  Oil-in-Water Emulsions and Their Flow Properties in Porous Media , 1973 .

[60]  C.W.W. Gewers.  Colloid and Surface Chemical Problems in Non-Conventional Heavy Oil Recovery , 1968 .

[61]  P. A. Winsor.  Hydrotropy, solubilisation and related emulsification processes , 1948 .