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Title: Enhancement of oil flow in shale nanopores by manipulating friction and viscosity

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI: https://doi.org/10.1039/C9CP01960J · OSTI ID:1526217

We report that understanding the viscosity and friction of a fluid under nanoconfinement is the key to nanofluidics research. Existing work on nanochannel flow enhancement has been focused on simple systems with only one to two fluids considered such as water flow in carbon nanotubes, and large slip lengths have been found to be the main factor for the massive flow enhancement. In this study, we use molecular dynamics simulations to study the fluid flow of a ternary mixture of octane–carbon dioxide–water confined within two muscovite and kerogen surfaces. The results indicate that, in a muscovite slit, supercritical CO2 (scCO2) and H2O both enhance the flow of octane due to (i) a decrease in the friction of octane with the muscovite wall because of the formation of thin layers of H2O and scCO2 near the surfaces; and (ii) a reduction in the viscosity of octane in nanoconfinement. Water reduces octane viscosity by weakening the interaction of octane with the muscovite surface, while scCO2 reduces octane viscosity by weakening both octane–octane and octane–surface interactions. In a kerogen slit, water does not play any significant role in changing the friction or viscosity of octane. In contrast, scCO2 reduces both the friction and the viscosity of octane, and the enhancement of octane flow is mainly caused by the reduction of viscosity. In conclusion, our results highlight the importance of multicomponent interactions in nanoscale fluid transport. The results presented here also have a direct implication in enhanced oil recovery in unconventional reservoirs.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1526217
Alternate ID(s):
OSTI ID: 1515563
Report Number(s):
SAND-2019-5913J; PPCPFQ; 675844
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Vol. 21, Issue 24; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (58)

Slip divergence of water flow in graphene nanochannels: the role of chirality journal January 2017
Fast Mass Transport Through Sub-2-Nanometer Carbon Nanotubes journal May 2006
Slip length of water on graphene: Limitations of non-equilibrium molecular dynamics simulations journal January 2012
Massive radius-dependent flow slippage in carbon nanotubes journal September 2016
Review of Fluid Slip over Superhydrophobic Surfaces and Its Dependence on the Contact Angle journal April 2008
The calculation of the viscosity from the autocorrelation function using molecular and atomic stress tensors journal August 1996
Wettability effect on nanoconfined water flow journal March 2017
Differential retention and release of CO2 and CH4 in kerogen nanopores: Implications for gas extraction and carbon sequestration journal May 2018
Molecular Modeling of the Volumetric and Thermodynamic Properties of Kerogen: Influence of Organic Type and Maturity journal December 2014
Flow behaviors of nanofluids in parallel-plate nanochannels influenced by the dynamics of nanoparticles journal April 2018
Electro-osmotic flow of a model electrolyte journal April 2005
Water Flow in Carbon Nanotubes: Transition to Subcontinuum Transport journal May 2009
Time reversible and symplectic integrators for molecular dynamics simulations of rigid molecules journal June 2005
Molecular transport through capillaries made with atomic-scale precision journal September 2016
Unimpeded Permeation of Water Through Helium-Leak-Tight Graphene-Based Membranes journal January 2012
Structure and dynamics of water confined in a graphene nanochannel under gigapascal high pressure: dependence of friction on pressure and confinement journal January 2017
Channel morphology effect on water transport through graphene bilayers journal December 2016
Size and temperature effects on the viscosity of water inside carbon nanotubes journal January 2011
Commensurability Effects in Viscosity of Nanoconfined Water journal February 2016
How fast does water flow in carbon nanotubes? journal March 2013
Molecular Models of Hydroxide, Oxyhydroxide, and Clay Phases and the Development of a General Force Field journal January 2004
The role of activation energy and reduced viscosity on the enhancement of water flow through carbon nanotubes journal May 2011
Reassessing Fast Water Transport Through Carbon Nanotubes journal September 2008
A molecular dynamics method for simulations in the canonical ensemble journal June 1984
Ion concentrations and velocity profiles in nanochannel electroosmotic flows journal March 2003
Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins journal August 2017
CHEMISTRY: A Curious Antipathy for Water journal December 2008
A molecular dynamics simulation of a water model with intramolecular degrees of freedom journal January 1987
Nanostructural control of methane release in kerogen and its implications to wellbore production decline journal June 2016
Friction Reduction at a Superhydrophilic Surface: Role of Ordered Water journal May 2015
Electro-osmosis in a nanometer-scale channel studied by atomistic simulation journal February 2002
Poiseuille flow of Lennard-Jones fluids in narrow slit pores journal January 2000
Nanoscale Fluid Transport: Size and Rate Effects journal September 2008
Viscosity and Wetting Property of Water Confined in Extended Nanospace Simultaneously Measured from Highly-Pressurized Meniscus Motion journal August 2012
Liquid water can slip on a hydrophilic surface journal September 2011
Enhanced Fluid Flow through Nanoscale Carbon Pipes journal September 2008
Supercritical CO 2 -induced atomistic lubrication for water flow in a rough hydrophilic nanochannel journal January 2018
Friction of Water on Graphene and Hexagonal Boron Nitride from Ab Initio Methods: Very Different Slippage Despite Very Similar Interface Structures journal November 2014
Water and methane in shale rocks: Flow pattern effects on fluid transport and pore structure journal August 2015
Molecular Dynamics Simulation of Salt Rejection in Model Surface-Modified Nanopores journal December 2009
Vapor–liquid equilibria of mixtures containing alkanes, carbon dioxide, and nitrogen journal July 2001
Nanofluidics: what is it and what can we expect from it? journal April 2005
Contact Angle, Liquid Film, and Liquid–Liquid and Liquid–Solid Interfaces in Model Oil–Brine–Substrate Systems journal May 2016
Chemo-mechanical coupling in kerogen gas adsorption/desorption journal January 2018
Consistent force field studies of intermolecular forces in hydrogen-bonded crystals. 2. A benchmark for the objective comparison of alternative force fields journal August 1979
Constant pressure molecular dynamics algorithms journal September 1994
Fast water transport in graphene nanofluidic channels journal January 2018
High Energy Conversion Efficiency in Nanofluidic Channels journal February 2012
The interplay between apparent viscosity and wettability in nanoconfined water journal September 2013
Interfacial water structure and the wetting of mineral surfaces journal November 2016
Nanoscale Fluid Transport: Size and Rate Effects text January 2008
Enhanced Fluid Flow through Nanoscale Carbon Pipes journal May 2009
A molecular dynamics method for simulations in the canonical ensemble journal January 2002
Computer Simulation Using Particles book January 1988
Computer Simulation Using Particles book January 1988
Unimpeded permeation of water through helium-leak-tight graphene-based membranes text January 2011
Commensurability Effects in Viscosity of Nanoconfined Water text January 2016
Molecular transport through capillaries made with atomic-scale precision text January 2016

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