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A Model for Predicting the Average Hydraulic Wax Deposition Thickness of a Long-Term Unpigged Crude Pipeline

[+] Author Affiliations
Qing Miao

China University of Petroleum, Beijing; PetroChina Pipeline Research & Development Center, Hebei, China

Baoliang Jiang, Sen Hu, Jianjun Liu

PetroChina Pipeline R&D Center, Hebei, China

Jianghua Tao

PetroChina Pipeline Company, Hebei, China

Paper No. IPC2010-31122, pp. 345-349; 5 pages
doi:10.1115/IPC2010-31122
From:
  • 2010 8th International Pipeline Conference
  • 2010 8th International Pipeline Conference, Volume 3
  • Calgary, Alberta, Canada, September 27–October 1, 2010
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4422-9 | eISBN: 978-0-7918-3885-3
  • Copyright © 2010 by ASME

abstract

A crude oil pipeline transporting Daqing crude in the Northeast of China had not been carried out pigging for four years. The wax deposition in it increased gradually over past four years. In this paper, from the operation data of the pipeline among the four years, the average hydraulic wax deposition thicknesses are calculated and analyzed statistically. Based on the results, the increment of the wax deposition in the long-term unpigged crude oil pipeline is concluded qualitatively and so a mathematical model for predicting the average hydraulic wax deposition thickness of such a pipeline is created. The physical meanings of the coefficients in the model are explained in the paper. Also, as an example for showing how to use this model, the statistical results on certain section of the pipeline are selected and the determination for the coefficients is introduced in detail.

Copyright © 2010 by ASME

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