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Research Papers: Petroleum Engineering

Flow Rate Effect on Wax Deposition Behavior in Single-Phase Laminar Flow

[+] Author and Article Information
Pan-Sang Kang

Department of Energy and
Resources Engineering,
Korea Maritime and Ocean University,
Yeongdo-Gu,
Busan 49112, South Korea
e-mail: pskang@kmou.ac.kr

Ji Yu Hwang

Energy Innovation Partners,
Yeongdeungpo-Gu,
Seoul 07326, South Korea
e-mail: jyhwang@energyipartners.com

Jong-Se Lim

Professor
Department of Energy and
Resources Engineering,
Korea Maritime and Ocean University,
Yeongdo-Gu,
Busan 49112, South Korea
e-mail: jslim@kmou.ac.kr

1Corresponding author.

Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received May 27, 2018; final manuscript received September 16, 2018; published online October 3, 2018. Assoc. Editor: Reza Sadr.

J. Energy Resour. Technol 141(3), 032903 (Oct 03, 2018) (9 pages) Paper No: JERT-18-1382; doi: 10.1115/1.4041525 History: Received May 27, 2018; Revised September 16, 2018

Wax deposition is an extremely common occurrence affecting flow assurance in oil fields. Under the laminar flow condition, the effect of the flow rate on wax deposition is still unclear. In this study, a flow loop test was conducted by considering the depletion effect to investigate the flow effect on wax deposition in single-phase laminar flow. The measured data were compared with the estimated data using models (wax deposition, hydrodynamic, and heat transfer models). The data obtained from the models were matched with the measured data; thus, thereby model parameters were tuned and the wax deposit thickness along the pipeline was estimated with respect to flow rate. The study results indicate that the wax deposit thickness decreases when the flow rate increases at the thickest spot (TS). The volume of wax deposits increases when the flow rate increases. An increase in the flow rate increases the distance between the inlet and the location of the TS.

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Figures

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Fig. 4

Procedure to estimate the wax deposit thickness

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Fig. 3

Schematic of the flow loop system

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Fig. 2

Viscosity of oil sample

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Fig. 1

Composition of the oil sample measured by gas chromatography

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Fig. 11

Volume of wax deposit thickness based on the flow rate

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Fig. 12

Relationship between the volume of wax deposits and the amount of oil injection

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Fig. 13

TS location based on the flow rate

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Fig. 8

Estimated wax deposit thickness (case 1)

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Fig. 9

Estimated wax deposit thickness (case 2)

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Fig. 10

Estimated wax deposit thickness (case 3)

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Fig. 5

Comparison between the measured and the estimated data at 7200 s (case 1)

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Fig. 6

Comparison between the measured and the estimated data at 7200 s (case 2)

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Fig. 7

Comparison between the measured and the estimated data at 7200 s (case 3)

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