Laboratory-scale investigation of the utilisation of multiple flat-fan nozzles in descaling petroleum production tubing

Hassan, KYA ORCID: https://orcid.org/0000-0001-6988-6442, John, IJ, Abbas, AJ ORCID: https://orcid.org/0000-0002-0709-1713, Suleiman, SM ORCID: https://orcid.org/0000-0003-2098-8645, Ahmadu, AA and Kabir, A 2021, Laboratory-scale investigation of the utilisation of multiple flat-fan nozzles in descaling petroleum production tubing , in: SPE Nigeria Annual International Conference and Exhibition 2021, 2nd-4th August 2021, Lagos, Nigeria.

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Abstract

Despite the recent wide embrace of mechanical descaling approaches for cleaning scales in petroleum production tubings and similar conduits with the use of high-pressure (HP) water jets, the process is still associated with downhole backpressure and well integrity challenges. While the introduction of sterling beads to replace sand particles in the water recorded high successes in maintaining well completion integrity after scale removal in some recent applications of this technique, it is, unfortunately, still not without questions of environmental degradation. Furthermore, the single nozzle, solids-free, aerated jetting descaling technique – recently published widely – is categorized with low scale surface area of contact, low descaling efficiency and subsequent high descaling rig time. The modifications to mechanical descaling techniques proposed in this work involve the use of three high-pressure flat fan nozzles of varying nozzles arrangements, standoff distances and injection pressures to remove soft scale deposits in oil and gas production tubings and similar circular conduits. This experiment provides further insights into the removal of paraffin scales of various shapes at different descaling conditions of injection pressures, stand-off distances and nozzle arrangements with the use of freshwater. The results obtained from this study also show consistency with findings from earlier works on the same subject.
Copyright 2021, Society of Petroleum Engineers.

Item Type: Conference or Workshop Item (Paper)
Additional Information: ** From Crossref proceedings articles via Jisc Publications Router **History: issued 02-08-2021; published 02-08-2021; published_online 02-08-2021
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: SPE Nigeria Annual International Conference and Exhibition 2021
Publisher: Society of Petroleum Engineers (SPE)
ISBN: 9781613998489
Related URLs:
SWORD Depositor: Publications Router
Depositing User: Publications Router
Date Deposited: 12 Aug 2021 09:05
Last Modified: 27 Aug 2021 21:56
URI: http://usir.salford.ac.uk/id/eprint/61478

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