Experimental study of drag reduction of polymer-polymer mixtures in horizontal dispersed oil-water flow

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Abstract

An experimental investigation of the effect of various mixtures of different polymers on drag reduction was studied in a dispersed horizontal oil-water flow. The study was carried out in a horizontal pipe flow loop system of 30.6-mm ID and 24 m length. All the polymers are anionic water-soluble polymers prepared in 1000 ppm master solution and injected at different flow rates to achieve polymer concentrations in the range of 5 to 30 ppm in the water phase. As expected, the percentage drag reductions of the individual polymers and of the binary polymer mixtures increased with the increase in the mixture velocity but decreased with the increase in the oil fraction. It has been found that the drag reduction of the mixed polymer solution is higher than the drag reduction of the lower molecular weight polymer. In most of the cases, the drag reduction of the binary mixtures shows a positive deviation from the additive straight lines. The positive deviation is more dominant for the mixture of the high and low molecular weight polymers than the mixture of the high and medium molecular weight polymers. Also, the drag reductions of the mixture of the high and low molecular weight polymers are higher than the drag reductions of the mixture of the high and medium molecular weight polymers. Finally, although positive deviation was observed in this study, no synergism was obtained for all the investigated polymer-polymer mixtures conditions.

Original languageEnglish
Pages (from-to)169-176
Number of pages8
JournalExperimental Thermal and Fluid Science
Volume83
DOIs
Publication statusPublished - May 1 2017

Fingerprint

Drag reduction
Polymers
Oils
Water
Molecular weight
Pipe flow
Polymer solutions
Binary mixtures

Keywords

  • Additive line
  • Dispersed flow
  • Drag reductions
  • Oil-water
  • Polymer-polymer mixture
  • Pressure gradients

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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title = "Experimental study of drag reduction of polymer-polymer mixtures in horizontal dispersed oil-water flow",
abstract = "An experimental investigation of the effect of various mixtures of different polymers on drag reduction was studied in a dispersed horizontal oil-water flow. The study was carried out in a horizontal pipe flow loop system of 30.6-mm ID and 24 m length. All the polymers are anionic water-soluble polymers prepared in 1000 ppm master solution and injected at different flow rates to achieve polymer concentrations in the range of 5 to 30 ppm in the water phase. As expected, the percentage drag reductions of the individual polymers and of the binary polymer mixtures increased with the increase in the mixture velocity but decreased with the increase in the oil fraction. It has been found that the drag reduction of the mixed polymer solution is higher than the drag reduction of the lower molecular weight polymer. In most of the cases, the drag reduction of the binary mixtures shows a positive deviation from the additive straight lines. The positive deviation is more dominant for the mixture of the high and low molecular weight polymers than the mixture of the high and medium molecular weight polymers. Also, the drag reductions of the mixture of the high and low molecular weight polymers are higher than the drag reductions of the mixture of the high and medium molecular weight polymers. Finally, although positive deviation was observed in this study, no synergism was obtained for all the investigated polymer-polymer mixtures conditions.",
keywords = "Additive line, Dispersed flow, Drag reductions, Oil-water, Polymer-polymer mixture, Pressure gradients",
author = "M. Eshrati and T. Al-Wahaibi and Al-Hashmi, {A. R.} and Y. Al-Wahaibi and A. Al-Ajmi and A. Abubakar",
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T1 - Experimental study of drag reduction of polymer-polymer mixtures in horizontal dispersed oil-water flow

AU - Eshrati, M.

AU - Al-Wahaibi, T.

AU - Al-Hashmi, A. R.

AU - Al-Wahaibi, Y.

AU - Al-Ajmi, A.

AU - Abubakar, A.

PY - 2017/5/1

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N2 - An experimental investigation of the effect of various mixtures of different polymers on drag reduction was studied in a dispersed horizontal oil-water flow. The study was carried out in a horizontal pipe flow loop system of 30.6-mm ID and 24 m length. All the polymers are anionic water-soluble polymers prepared in 1000 ppm master solution and injected at different flow rates to achieve polymer concentrations in the range of 5 to 30 ppm in the water phase. As expected, the percentage drag reductions of the individual polymers and of the binary polymer mixtures increased with the increase in the mixture velocity but decreased with the increase in the oil fraction. It has been found that the drag reduction of the mixed polymer solution is higher than the drag reduction of the lower molecular weight polymer. In most of the cases, the drag reduction of the binary mixtures shows a positive deviation from the additive straight lines. The positive deviation is more dominant for the mixture of the high and low molecular weight polymers than the mixture of the high and medium molecular weight polymers. Also, the drag reductions of the mixture of the high and low molecular weight polymers are higher than the drag reductions of the mixture of the high and medium molecular weight polymers. Finally, although positive deviation was observed in this study, no synergism was obtained for all the investigated polymer-polymer mixtures conditions.

AB - An experimental investigation of the effect of various mixtures of different polymers on drag reduction was studied in a dispersed horizontal oil-water flow. The study was carried out in a horizontal pipe flow loop system of 30.6-mm ID and 24 m length. All the polymers are anionic water-soluble polymers prepared in 1000 ppm master solution and injected at different flow rates to achieve polymer concentrations in the range of 5 to 30 ppm in the water phase. As expected, the percentage drag reductions of the individual polymers and of the binary polymer mixtures increased with the increase in the mixture velocity but decreased with the increase in the oil fraction. It has been found that the drag reduction of the mixed polymer solution is higher than the drag reduction of the lower molecular weight polymer. In most of the cases, the drag reduction of the binary mixtures shows a positive deviation from the additive straight lines. The positive deviation is more dominant for the mixture of the high and low molecular weight polymers than the mixture of the high and medium molecular weight polymers. Also, the drag reductions of the mixture of the high and low molecular weight polymers are higher than the drag reductions of the mixture of the high and medium molecular weight polymers. Finally, although positive deviation was observed in this study, no synergism was obtained for all the investigated polymer-polymer mixtures conditions.

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