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Multiphase Flow Production Enhancement Using Drag Reducing Polymers.

Abdelsalam Alsarkhi1, Mustafa Salah1

  • 1Department of Mechanical Engineering, Center for Integrative Petroleum Research, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.

Polymers
|March 11, 2023
PubMed
Summary
This summary is machine-generated.

Drag reducing polymers (DRP) significantly enhance throughput and reduce pressure drop in horizontal two-phase air-water flow. DRP effectively damp turbulence, alter flow regimes, and improve separator performance.

Keywords:
disturbance wavesdrag reducing polymersflow pattern transitionmultiphase flowproduction enhancement

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Area of Science:

  • Fluid Mechanics
  • Chemical Engineering
  • Polymer Science

Background:

  • Two-phase flow systems are prevalent in various industrial applications, often facing challenges with high pressure drop and limited throughput.
  • Drag reducing polymers (DRP) are known to modify turbulent flow characteristics, but their specific impact on two-phase flow regimes and separator performance requires detailed investigation.

Purpose of the Study:

  • To experimentally investigate the effects of drag reducing polymers (DRP) on pressure drop and throughput in horizontal air-water two-phase flow.
  • To analyze the influence of DRP on turbulence damping, flow regime transitions, and potential improvements in separator performance.
  • To develop empirical correlations for predicting pressure drop in DRP-modified two-phase flow.

Main Methods:

  • A comprehensive experimental setup was designed with a 1.016-cm ID horizontal pipe, including an acrylic section for visual flow pattern observation.
  • A novel injection technique was employed to introduce DRP into the air-water mixture at various injection rates.
  • Flow patterns, pressure drop, and throughput were systematically measured under different flow conditions with and without DRP.

Main Results:

  • DRP addition consistently reduced pressure drop across all tested flow configurations.
  • Maximum drag reduction was observed when DRP effectively damped highly fluctuated waves, leading to flow regime transitions.
  • The study demonstrated potential benefits for separation processes and separator performance due to DRP-induced flow modifications.
  • Developed empirical correlations showed low discrepancy in predicting pressure drop with DRP for a wide range of flow rates.

Conclusions:

  • Drag reducing polymers are effective in mitigating pressure drop and enhancing throughput in horizontal air-water two-phase flow.
  • DRP's ability to damp turbulence and alter flow regimes offers significant potential for optimizing industrial processes, including separation.
  • The developed empirical correlations provide a valuable tool for predicting pressure drop in DRP-modified two-phase flow systems.