Latest revision as of 11:59, 15 February 2021

Abstract

One of the fundamental questions that must be addressed in the effective design and operation of pipeline lubrication of heavy oil is; “how much time will be needed to restart a blocked core annular flow (CAF) line after shutdown due to fouling or pump failures”, if the pipe is to be cleaned using water only. In this work, laboratory results of shutdown and restart experiments of high-viscous oil conducted in a 5.5-m-long PVC horizontal pipe with internal diameter of 26 mm are first presented. A new correlation for the prediction of the restart time of a shutdown core annular flow line is then formulated. The predictive capabilities of the correlation are checked against measured restart time and pressure drop evolution data. Somewhat high but still reasonable predictions are obtained. The restart time correlation, together with the associated correlations formulated as well, can be of practical importance during the engineering design of high-viscous oil pipeline transportation facility for predicting restart process.

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• http://dx.doi.org/10.1007/s13202-016-0241-y under the license http://creativecommons.org/licenses/by/4.0

• https://doi.org/10.1007/s13202-016-0241-y under the license http://creativecommons.org/licenses/by/4.0

• http://dx.doi.org/10.1007/s13202-016-0241-y,

http://dspace.lib.cranfield.ac.uk/handle/1826/10366 under the license cc-by

• http://link.springer.com/content/pdf/10.1007/s13202-016-0241-y.pdf,

http://link.springer.com/article/10.1007/s13202-016-0241-y/fulltext.html,

http://link.springer.com/content/pdf/10.1007/s13202-016-0241-y,

http://dx.doi.org/10.1007/s13202-016-0241-y under the license This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

• https://link.springer.com/content/pdf/10.1007%2Fs13202-016-0241-y.pdf,

https://link.springer.com/article/10.1007/s13202-016-0241-y,

https://dspace.lib.cranfield.ac.uk/handle/1826/10366,

https://paperity.org/p/75934027/restart-time-correlation-for-core-annular-flow-in-pipeline-lubrication-of-high-viscous,

https://core.ac.uk/display/74409872,

https://dspace.lib.cranfield.ac.uk/bitstream/1826/10366/3/Restart_time_correlation-pipeline_lubrication_of_high-viscous_oil_2016.pdf.pdf,

https://academic.microsoft.com/#/detail/2322900863 under the license http://creativecommons.org/licenses/by/4.0