Restart time correlation for core annular flow in pipeline lubrication of high-viscous oil


== 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.

Document type: Article

== Full document ==
<pdf>Media:Draft_Content_108184104-beopen895-9832-document.pdf</pdf>


== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.1007/s13202-016-0241-y 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 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://dx.doi.org/10.1007/s13202-016-0241-y],
: [http://dspace.lib.cranfield.ac.uk/handle/1826/10366 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/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/article/10.1007/s13202-016-0241-y/fulltext.html],
: [http://link.springer.com/content/pdf/10.1007/s13202-016-0241-y http://link.springer.com/content/pdf/10.1007/s13202-016-0241-y],
: [http://dx.doi.org/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/content/pdf/10.1007%2Fs13202-016-0241-y.pdf],
: [https://link.springer.com/article/10.1007/s13202-016-0241-y https://link.springer.com/article/10.1007/s13202-016-0241-y],
: [https://dspace.lib.cranfield.ac.uk/handle/1826/10366 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://paperity.org/p/75934027/restart-time-correlation-for-core-annular-flow-in-pipeline-lubrication-of-high-viscous],
: [https://core.ac.uk/display/74409872 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://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 https://academic.microsoft.com/#/detail/2322900863] under the license http://creativecommons.org/licenses/by/4.0