Effect of pipe diameter on horizontal oil-water flow before and after addition of drag-reducing polymer part I

Flow patterns and pressure gradients

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this work, the results of the experimental investigations of oil-water flow in the absence and presence of water-soluble drag-reducing polymer in two different horizontal pipe diameters (55.7 and 74.67-mm ID) and their comparisons with the results in horizontal 30.6-mm ID pipe were presented. During the study, mixture velocity of the oil-water flow was varied from 0.1 to 1.6 m/s while the input oil volume fraction was varied from 0.05 to 0.9. At each experimental run, the polymer master solution of 2000 ppm concentration was injected into the flow at a controlled flow rate such that 40 ppm concentration of the polymer was achieved in the water phase. The six flow patterns previously observed in the 30.6-mm ID pipe reduced to four in the larger pipes. Although the presence of the polymer only affected the water-continuous flow patterns just like in the 30.6-mm ID pipe, the increase in the pipe diameter increased the regions of separated flow patterns before and after the addition of the polymer. Similarly, the frictional pressure gradients were significantly decreased by the polymer addition in all the three pipes resulting to huge drag reductions, which virtually decreased with increase in the pipe diameters.

Original languageEnglish
Pages (from-to)12-22
Number of pages11
JournalJournal of Petroleum Science and Engineering
Volume153
DOIs
Publication statusPublished - May 1 2017

Fingerprint

Pressure gradient
pressure gradient
flow pattern
Flow patterns
drag
Drag
water flow
pipe
polymer
Pipe
oil
Polymers
Water
horizontal pipe
Drag reduction
effect
Oils
water
Polymer solutions
Volume fraction

Keywords

  • Drag reductions
  • Flow patterns
  • Oil-water
  • Pipe diameters
  • Pressure gradients

ASJC Scopus subject areas

  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology

Cite this

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title = "Effect of pipe diameter on horizontal oil-water flow before and after addition of drag-reducing polymer part I: Flow patterns and pressure gradients",
abstract = "In this work, the results of the experimental investigations of oil-water flow in the absence and presence of water-soluble drag-reducing polymer in two different horizontal pipe diameters (55.7 and 74.67-mm ID) and their comparisons with the results in horizontal 30.6-mm ID pipe were presented. During the study, mixture velocity of the oil-water flow was varied from 0.1 to 1.6 m/s while the input oil volume fraction was varied from 0.05 to 0.9. At each experimental run, the polymer master solution of 2000 ppm concentration was injected into the flow at a controlled flow rate such that 40 ppm concentration of the polymer was achieved in the water phase. The six flow patterns previously observed in the 30.6-mm ID pipe reduced to four in the larger pipes. Although the presence of the polymer only affected the water-continuous flow patterns just like in the 30.6-mm ID pipe, the increase in the pipe diameter increased the regions of separated flow patterns before and after the addition of the polymer. Similarly, the frictional pressure gradients were significantly decreased by the polymer addition in all the three pipes resulting to huge drag reductions, which virtually decreased with increase in the pipe diameters.",
keywords = "Drag reductions, Flow patterns, Oil-water, Pipe diameters, Pressure gradients",
author = "A. Abubakar and Y. Al-Wahaibi and T. Al-Wahaibi and Al-Hashmi, {A. R.} and A. Al-Ajmi and M. Eshrati",
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T2 - Flow patterns and pressure gradients

AU - Abubakar, A.

AU - Al-Wahaibi, Y.

AU - Al-Wahaibi, T.

AU - Al-Hashmi, A. R.

AU - Al-Ajmi, A.

AU - Eshrati, M.

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N2 - In this work, the results of the experimental investigations of oil-water flow in the absence and presence of water-soluble drag-reducing polymer in two different horizontal pipe diameters (55.7 and 74.67-mm ID) and their comparisons with the results in horizontal 30.6-mm ID pipe were presented. During the study, mixture velocity of the oil-water flow was varied from 0.1 to 1.6 m/s while the input oil volume fraction was varied from 0.05 to 0.9. At each experimental run, the polymer master solution of 2000 ppm concentration was injected into the flow at a controlled flow rate such that 40 ppm concentration of the polymer was achieved in the water phase. The six flow patterns previously observed in the 30.6-mm ID pipe reduced to four in the larger pipes. Although the presence of the polymer only affected the water-continuous flow patterns just like in the 30.6-mm ID pipe, the increase in the pipe diameter increased the regions of separated flow patterns before and after the addition of the polymer. Similarly, the frictional pressure gradients were significantly decreased by the polymer addition in all the three pipes resulting to huge drag reductions, which virtually decreased with increase in the pipe diameters.

AB - In this work, the results of the experimental investigations of oil-water flow in the absence and presence of water-soluble drag-reducing polymer in two different horizontal pipe diameters (55.7 and 74.67-mm ID) and their comparisons with the results in horizontal 30.6-mm ID pipe were presented. During the study, mixture velocity of the oil-water flow was varied from 0.1 to 1.6 m/s while the input oil volume fraction was varied from 0.05 to 0.9. At each experimental run, the polymer master solution of 2000 ppm concentration was injected into the flow at a controlled flow rate such that 40 ppm concentration of the polymer was achieved in the water phase. The six flow patterns previously observed in the 30.6-mm ID pipe reduced to four in the larger pipes. Although the presence of the polymer only affected the water-continuous flow patterns just like in the 30.6-mm ID pipe, the increase in the pipe diameter increased the regions of separated flow patterns before and after the addition of the polymer. Similarly, the frictional pressure gradients were significantly decreased by the polymer addition in all the three pipes resulting to huge drag reductions, which virtually decreased with increase in the pipe diameters.

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