Header menu link for other important links
X
Silica nanofluids in polyacrylamide with and without surfactant: Viscosity, surface tension, and interfacial tension with liquid paraffin
Published in Elsevier B.V.
2017
Volume: 152
   
Pages: 575 - 585
Abstract
The reduction in interfacial tension (IFT) of paraffin crude oil is of key importance, particularly for oilfield applications such as enhanced oil recovery (EOR). Nanoparticle laden suspension such as nanofluid is gaining widespread interest and their use to achieve moderate IFT reduction in paraffin crude oil. In this work, stable nanofluids of an oilfield polymer (polyacrylamide, PAM) with and without surfactant (sodium dodecyl sulfate, SDS) have been formulated and examined for IFT reduction of paraffin oils such as n-decane, n-hexane, n-pentane, and n-heptane. Nanofluids were also investigated for various studies such as dispersion stability, viscosity, rate of sedimentation (ROS), and DLS based measurements (size and zeta-potential). Other studies involving investigations on surface tension (SFT), IFT reduction, effect of SDS and varying SiO2concentration on IFT reduction, and their efficacy for IFT reduction under high temperature environment have also been reported. The performance of nanofluids for IFT reduction has been compared with IFT results of conventional polymer (P) and surfactant-polymer (SP) methods, which are typically used for chemical-EOR practices. As compared to P and SP methods, IFT value of nanoparticle-polymer (NP) and nanoparticle-surfactant-polymer (NSP) fluids were found to be significantly lower suitable for enhanced oil recovery. In addition, NSP nanofluids provided superior reduction in IFT values mainly due to the presence of SDS. Thus, we conclude that SiO2nanofluid, as compared to P/SP EOR methods, can be a potential alternative to reduce the IFT of paraffin crude oil. © 2017 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Petroleum Science and Engineering
PublisherData powered by TypesetElsevier B.V.
Open AccessNo
Concepts (29)
  •  related image
    Crude oil
  •  related image
    Heptane
  •  related image
    Hexane
  •  related image
    Nanofluidics
  •  related image
    Nanoparticles
  •  related image
    Oil well flooding
  •  related image
    PARAFFIN OILS
  •  related image
    Paraffins
  •  related image
    Polymers
  •  related image
    Silica
  •  related image
    Sodium dodecyl sulfate
  •  related image
    SULFUR COMPOUNDS
  •  related image
    Surface active agents
  •  related image
    Surface tension
  •  related image
    Viscosity
  •  related image
    CHEMICAL EOR
  •  related image
    CONVENTIONAL POLYMERS
  •  related image
    DISPERSION STABILITY
  •  related image
    ENHANCED OIL RECOVERY
  •  related image
    HIGH-TEMPERATURE ENVIRONMENT
  •  related image
    LIQUID PARAFFINS
  •  related image
    Nanofluids
  •  related image
    OIL FIELD APPLICATIONS
  •  related image
    Enhanced recovery
  •  related image
    Interface
  •  related image
    Liquid
  •  related image
    Nanoparticle
  •  related image
    Polymer
  •  related image
    Surfactant