Wear and impact properties of polymeric coatings used in the off-shore industry
Wear and impact properties of polymeric coatings used in the off-shore industry
The steel tubulars for water injection in the oil industry are internally coated primarily for corrosion resistance. Various polymeric materials have been used for Aese coatings which are sprayed or deposited on to the bore of the downhole tubulars. However in service it has been found that the polymeric coatings can be damaged by the tools that are periodically lowered at speed down the well. This damage takes the form of wear of the coatings by the wire to which the tool is attached (wireline wear) and impact damage when the tool impacts the bore of the tube. The polymeric materials used in these coatings are composites consisting of a polymeric matrix which normally contains a filler. The mechanism by which the addition of a filler improves wear resistance is still not fully understood and detailed wear testing and microscopy on wear tracks are needed to elucidate the mechanism. In particular, the effect of the nature, amount, size and distribution of the filler on the wear resistance requires further study. This information is essential if a model is to be developed to predict the wear resistance of a particle filled polymeric coating. Similarly, the influence of the nature, amount, size and distribution of Gller on the impact resistance is still lacking. This information is also necessary if a model of the impact strength of filled polymeric coatings is to be developed. In addition, the bond strength between the coating and steel substrate is important in determining the behaviour of the polymeric coating under both wear and impact conditions. The bond strength of the coating is unknown, therefore, this investigation will assess the adhesive strength by using four-point bending and acoustic emission (AE) tests. This will lead to an improved understanding of the relation between the mechanisms of wear and impact resistance and the microstructure of the polymeric coatings. Experiments on the wireline wear and impact of different polymeric coatings will be undertaken by simulating the in-situ working conditions of downhole tubulars to investigate the mechanism of wireline wear and impact damage to polymeric coatings caused by the inspection tools. The emphasis of this study will be to correlate the microstructural factors and the wear and impact resistance of polymeric coatings.
University of Southampton
Xu, Yanmeng
261426ae-ff01-4a12-9c98-77f62e970401
2003
Xu, Yanmeng
261426ae-ff01-4a12-9c98-77f62e970401
Xu, Yanmeng
(2003)
Wear and impact properties of polymeric coatings used in the off-shore industry.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
The steel tubulars for water injection in the oil industry are internally coated primarily for corrosion resistance. Various polymeric materials have been used for Aese coatings which are sprayed or deposited on to the bore of the downhole tubulars. However in service it has been found that the polymeric coatings can be damaged by the tools that are periodically lowered at speed down the well. This damage takes the form of wear of the coatings by the wire to which the tool is attached (wireline wear) and impact damage when the tool impacts the bore of the tube. The polymeric materials used in these coatings are composites consisting of a polymeric matrix which normally contains a filler. The mechanism by which the addition of a filler improves wear resistance is still not fully understood and detailed wear testing and microscopy on wear tracks are needed to elucidate the mechanism. In particular, the effect of the nature, amount, size and distribution of the filler on the wear resistance requires further study. This information is essential if a model is to be developed to predict the wear resistance of a particle filled polymeric coating. Similarly, the influence of the nature, amount, size and distribution of Gller on the impact resistance is still lacking. This information is also necessary if a model of the impact strength of filled polymeric coatings is to be developed. In addition, the bond strength between the coating and steel substrate is important in determining the behaviour of the polymeric coating under both wear and impact conditions. The bond strength of the coating is unknown, therefore, this investigation will assess the adhesive strength by using four-point bending and acoustic emission (AE) tests. This will lead to an improved understanding of the relation between the mechanisms of wear and impact resistance and the microstructure of the polymeric coatings. Experiments on the wireline wear and impact of different polymeric coatings will be undertaken by simulating the in-situ working conditions of downhole tubulars to investigate the mechanism of wireline wear and impact damage to polymeric coatings caused by the inspection tools. The emphasis of this study will be to correlate the microstructural factors and the wear and impact resistance of polymeric coatings.
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Published date: 2003
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Local EPrints ID: 465451
URI: http://eprints.soton.ac.uk/id/eprint/465451
PURE UUID: 5d0cc2da-cf68-483b-94be-d552e1490385
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Date deposited: 05 Jul 2022 01:07
Last modified: 16 Mar 2024 20:11
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Author:
Yanmeng Xu
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