Solving the Waxy Crude Oil Pipeline Flow Restart Problem Numerically in non-isothermal Condition from the Perspective of Engineering

Junjie Gao , Chen Lei, Liu Gang, Shuyi Ren, Cheng Chen, Ruiyu Xu, John Chai

Research output: Contribution to journalArticle

Abstract

For maintenance, emergency or other reasons, the pipeline flow can stop. In the development of start-up models, the heat diffusion between the oil and surrounding hasn’t been almost always considered. In this paper, the numerical restart model of buried pipelines was established consisting of a new simplified oil heat transfer model and a cold oil displacement flow model considering oil heat diffusion to low temperature soil and temperature gradients in axial direction. In addition, the effect of axial mesh size, time step, different boundaries conditions of pipe wall and shutdown in different seasons have been studied intensively.
LanguageEnglish
JournalSPE Production and Operations
Early online date1 Jun 2019
DOIs
Publication statusE-pub ahead of print - 1 Jun 2019

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Pipe flow
Crude oil
Thermal gradients
Numerical models
Pipelines
Pipe
Boundary conditions
Heat transfer
Soils
Oils
Temperature
Hot Temperature

Cite this

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title = "Solving the Waxy Crude Oil Pipeline Flow Restart Problem Numerically in non-isothermal Condition from the Perspective of Engineering",
abstract = "For maintenance, emergency or other reasons, the pipeline flow can stop. In the development of start-up models, the heat diffusion between the oil and surrounding hasn’t been almost always considered. In this paper, the numerical restart model of buried pipelines was established consisting of a new simplified oil heat transfer model and a cold oil displacement flow model considering oil heat diffusion to low temperature soil and temperature gradients in axial direction. In addition, the effect of axial mesh size, time step, different boundaries conditions of pipe wall and shutdown in different seasons have been studied intensively.",
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author = "Junjie Gao and Chen Lei and Liu Gang and Shuyi Ren and Cheng Chen and Ruiyu Xu and John Chai",
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doi = "10.2118/195692-PA",
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publisher = "Society of Petroleum Engineers (SPE)",

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Solving the Waxy Crude Oil Pipeline Flow Restart Problem Numerically in non-isothermal Condition from the Perspective of Engineering. / Gao , Junjie; Lei, Chen; Gang, Liu; Ren, Shuyi; Chen, Cheng; Xu, Ruiyu ; Chai, John.

In: SPE Production and Operations, 01.06.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Solving the Waxy Crude Oil Pipeline Flow Restart Problem Numerically in non-isothermal Condition from the Perspective of Engineering

AU - Gao , Junjie

AU - Lei, Chen

AU - Gang, Liu

AU - Ren, Shuyi

AU - Chen, Cheng

AU - Xu, Ruiyu

AU - Chai, John

PY - 2019/6/1

Y1 - 2019/6/1

N2 - For maintenance, emergency or other reasons, the pipeline flow can stop. In the development of start-up models, the heat diffusion between the oil and surrounding hasn’t been almost always considered. In this paper, the numerical restart model of buried pipelines was established consisting of a new simplified oil heat transfer model and a cold oil displacement flow model considering oil heat diffusion to low temperature soil and temperature gradients in axial direction. In addition, the effect of axial mesh size, time step, different boundaries conditions of pipe wall and shutdown in different seasons have been studied intensively.

AB - For maintenance, emergency or other reasons, the pipeline flow can stop. In the development of start-up models, the heat diffusion between the oil and surrounding hasn’t been almost always considered. In this paper, the numerical restart model of buried pipelines was established consisting of a new simplified oil heat transfer model and a cold oil displacement flow model considering oil heat diffusion to low temperature soil and temperature gradients in axial direction. In addition, the effect of axial mesh size, time step, different boundaries conditions of pipe wall and shutdown in different seasons have been studied intensively.

KW - waxy crude oil

KW - displacement flow

KW - soil temperature field

KW - heat diffusion

KW - engineering application

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