Research Papers: Multiphase Flows

Experimental Investigation on Hydrodynamics of Two-Phase Crude Oil Flow in Horizontal Pipe With Novel Surfactant

[+] Author and Article Information
Manojkumar Gudala

Department of Petroleum Engineering,
Dhanbad 826004, India
e-mail: manojkumar6027@live.com

Shirsendu Banerjee

Department of Petroleum Engineering,
K L University,
Guntur 522502, Andhra Pradesh, India
e-mail: shirsendubanerjee50@gmail.com

Ravindra Kumar

Department of Petroleum Engineering,
Dhanbad 826004, India
e-mail: ravindra01d.kumar@gmail.com

T. Rama Mohan Rao

Department of Mechanical Engineering,
Vasavi College of Engineering,
Hyderabad 500031, India
e-mail: trmrao@yahoo.com

Ajay Mandal

Department of Petroleum Engineering,
Dhanbad 826004, India
e-mail: mandal_ajay@hotmail.com

Tarun Kumar Naiya

Department of Petroleum Engineering,
Dhanbad 826004, India
e-mail: trn2711@yahoo.com

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received April 26, 2017; final manuscript received January 20, 2018; published online March 13, 2018. Assoc. Editor: Mhamed Boutaous.

J. Fluids Eng 140(6), 061302 (Mar 13, 2018) (14 pages) Paper No: FE-17-1250; doi: 10.1115/1.4039130 History: Received April 26, 2017; Revised January 20, 2018

The hydrodynamic entrance length, pressure drop analysis, viscosity, and fully developed velocity profile in horizontal pipe for crude oil with and without water and surfactant were studied in a 2 in ID horizontal pipe of length 2.5 m experimentally. Hydrodynamic entry length and fluid characteristics have been examined by varying temperature, water fraction, and flow rates. Temperature was varied by 25–40 °C, flow rates 40–60 LPM, and water 0–15% v/v and Madhuca longifolia from 500 to 2000 ppm. Triton X-100 was mixed with water to increase the emulsion capability during crude oil–water flows. The results showed significant influence of water, flow rate, and temperature on the hydrodynamic entry region length, pressure drop, viscosity, and velocity profiles along with natural surfactant. Pressure drop was reduced by 93.75%, 94.18%, and 93.02% with 15% water and 2000 ppm surfactant at 40 °C for 40 LPM, 50 LPM, and 60 LPM, respectively. Viscosity of the crude oil during flowing is greatly influenced by water and addition of surfactant. After addition of 2000 ppm surfactant and 15% water at 40 °C, viscosity reduced by about 94%. Hydrodynamic entry region length increased from 0.0354 to 0.2014 m, 0.0368 to 0.2336 m, and 0.0384 to 0.2641 m during transportation of crude oil after addition of 2000 ppm surfactant and 15% water at 40 °C for 40 LPM, 50 LPM, and 60 LPM flow, respectively.

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Fig. 1

The development of the velocity boundary layer in a circular horizontal pipe

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Fig. 2

Schematic of experimental setup

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Fig. 3

Fourier-transform infrared spectroscopy (FTIR) spectra of extracted surfactant Madhuca longifolia (Mahua)

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Fig. 4

Forces in flow of heavy crude oil in horizontal pipeline

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Fig. 5

Variation of pressure drop with temperature at 40, 50, and 60 LPM conditions

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Fig. 6

Variation of fanning friction factor with Reynolds at different temperatures

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Fig. 7

Variation of friction factor with Reynolds for all experimental conditions

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Fig. 8

Effect of water and Madhuca on viscosity of crude oil flow at different temperatures

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Fig. 9

Effect of water and Madhuca longifolia (Mahua) on hydrodynamic entrance lengths of pure crude oil and emulsified crude oils with temperature

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Fig. 10

Variation of hydrodynamic entrance lengths of crude oil and its emulsions with Reynolds number at different temperatures

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Fig. 11

Velocity profiles at different water and surfactant concentrations at 25 °C during crude oil flow in horizontal pipeline

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Fig. 12

Velocity profiles at different water and surfactant concentrations at 30 °C during crude oil flow in horizontal pipeline

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Fig. 13

Velocity profiles at different water and surfactant concentrations at 35 °C during crude oil flow in horizontal pipe

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Fig. 14

Velocity profiles at different water and surfactant concentrations at 40 °C during crude oil flow in horizontal pipeline



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