JPCL July 2020

 
JPCL July 2020


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Study of Stockpiled, Fusion-Bonded Epoxy-Coated Pipe

by Keith Coulson, James Ferguson and David Milmine, TC Energy

For a major new North American oil pipeline project, pipe was originally procured, manufactured and coated, then stockpiled in large quantities at several sites. The majority of the pipe stored in the outer layers of the stockpiles was coated with a whitewash acrylic resin coating to reduce or eliminate the effects of UV degradation. The inner piping at the stockpiles was not protected, as it was determined that the overlaying whitewashed coated pipe would eliminate the influence of UV degradation. This article describes the testing program developed to assess the integrity of the coating on the stored pipe, and to determine its fitness for purpose as a pipeline coating.


Underblasted and Reblasted Carbon Steel Substrates: Topographical and Performance Effects

by Carl Reed, GPI Laboratories, Inc.; and Kat Coronado and Heather Cui, International Paint, LLC

Previous studies by the authors examined the effect of remedially blasting a previously prepared steel surface that had a profile that exceeded specification, as well as the effect reblasting might have on the corrosion resistance after a coating is applied to a steel surface. This article looks into the effects of remediation of a below-specification blast profile on a steel surface is examined by using test panels that were prepared using steel grit abrasive and coal slag abrasive at below-specification profile, at specification and remediated.


Down The Hole Without a Paddle: Corrosion Mitigation of Wellhead Surface Casings Using IMM Coatings

by Nicole de Varennes, P.L. (Eng.), IRISNDT Ltd; Mike O’Donoghue, PhD, and Vijay Datta, MS, International Paint LLC; and Norm Spence, Spence Corrosion Ltd.

A key component of oil and gas wells are the wellheads, which provide both the structural and pressure-containing interfaces for drilling and production equipment. Most corrosion mitigation procedures for wellhead surface casings have been met with limited success, but in the past five years, an idea that originated from the proven performance of a novel high-temperature inert multi-polymeric matrix (IMM) coating for mitigating corrosion under insulation has changed this picture dramatically. The authors explain this coating technology, which many oil producers have successfully trialed and adopted for existing wellhead surface casings.


   
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