Design of Mid.Tg FBE powder coatings to meet the requirements of pipe coaters and pipeline owners (English)

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The development of oil and gas fields at increasing depths in recent years, both onshore and offshore, and the need for pipelines to carry viscous media such as oil sands at high temperature to improve flow efficiency, has created a requirement for the coatings used to protect such pipelines from corrosion to be able to operate in a temperature range 120-150 deg C. One of the most successful coating types for the corrosion protection of steel pipes is Fusion Bonded Epoxy (FBE) powder coatings but, until now, the range of options available for pipelines operating at high temperatures has been mainly limited to either a standard FBE applied at a higher film thickness or as a dual-layer system, or an FBE with a high glass transition (Tg) of the film, applied as a primer for a 3-layer polypropylene system. Whilst it is widely accepted that it is preferable for the Tg of the coating film to be at least 10 deg C above the operating temperature of the pipeline there are few FBE coatings commercially available with a film Tg in the range 130-160 deg C to allow them to be used at the higher operating temperatures now required. The few that do exist have relatively limited flexibility particularly at low temperatures which limits the range of environmental conditions that pipelines coated with such products can withstand. This paper presents the development of a range of mid-Tg FBE powder coatings with film Tg's in the range 130-150 deg C. These coatings demonstrate excellent adhesion and mechanical performance, even at temperatures down to -60 deg C, thus greatly expanding the range of field conditions and pipeline operating temperatures that can be accommodated. The excellent flexibility of these coatings enable them to be applied as a single-layer FBE coating, and as a dual-layer FBE coating system, as well as a primer for 3-layer polypropylene systems. The growing commercial track record of these products is confirming the excellent results seen in production and laboratory testing.

Table of contents conference proceedings

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Residual stresses in 3LPO external pipeline coatings - disbondment and cracking
Chang, B.T.A. / Hung-jue, S. / Han, J. / Wong, D. / Kehr, A. / Mallozzi, M. / Aguirre, F. / Snider, W. / BHR Group Limited | 2009
A new application process that assures good adhesion of fusion bonded epoxy coating exposed to very severe conditions
Gaillard, G. / Bouliez, J.L. / BHR Group Limited | 2009
Adhesion failure of external 3 layer extruded polyethylene (3LPE) based coatings for gas/oil transmission pipelines buried under soil
Hussain, A. / Pflugbeil, C. / BHR Group Limited | 2009
Development and performance of a low application temperature FBE coating
Pratt, J.K. / Mallozzi, M.L. / BHR Group Limited | 2009
Design of Mid. Tg FBE powder coatings to meet the requirements of pipe coaters and pipeline owners
Patterson, M. / Drew, S. / Boerschel, V. / BHR Group Limited | 2009
Rheokinetic modeling of fusion bonded epoxy powder coatings at standard and low application temperature
Shafi, M.A. / Aguirre, F. / Trottier, E. / Falcone-Potts, S. / BHR Group Limited | 2009
PNC: A new solution for offshore field joint coatings
Mallozzi, M. / Perez, M. / BHR Group Limited | 2009
Novel field joint coating solutions for the construction of subsea pipelines
Tailor, D. / Tacoma, E. / BHR Group Limited | 2009
Pipeline rehabilitation for the 21st century
Bond, T.J.M. / Miles, D.J. / Burke, R.N. / Venero, N.J. / BHR Group Limited | 2009
The impact of logistic operations on coatings in the supply chain of pipelines
van Assema, I.M. / BHR Group Limited | 2009
Rapid hardening concrete cloth for oil, gas and water pipeline protection applications
Orr-Adams, F.A. / Brewin, P. / Hiam, E. / BHR Group Limited | 2009
Dow products for 3LPE steel pipe coating - AMPLIFY™ GR 320 and HDPE 12110G
Henschke, O. / BHR Group Limited | 2009
Rehabilitation of corrosion protective coatings on buried steel pipelines
Schad, M. / Stroter, C. / Rehberg, T. / BHR Group Limited | 2009
The challenge - renovation project in new dimensions: the renewal of the anti-corrosion protection of the hydropower station at Wehr, Germany
Zwanzinger, A. / Rainer, E. / Huber, T. / BHR Group Limited | 2009
Foamed cement mortar to protect coated steel pipelines from external acid attack
Trebicki, D.D.P. / BHR Group Limited | 2009