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

1 Citation (Scopus)

Abstract

For maintenance, emergency, or other reasons, pipeline flow can stop. In the development of startup models, the heat diffusion between oil and the surrounding region has not always been considered. Here we establish a numerical restart model for buried pipelines 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 the axial direction. In addition, we present our studies on the effects of axial-mesh size, timestep, different boundary conditions of the pipe wall, and shutdown in different seasons.

Original languageEnglish
Pages (from-to)647-666
Number of pages20
JournalSPE Production and Operations
Volume34
Issue number3
Early online date1 Jun 2019
DOIs
Publication statusPublished - 1 Aug 2019

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