Menu
Search
Filters
Close
Menu

51318-11291-Oil Sands Bitumen Effect on Corrosion

Picture for Oil Sands Bitumen Effect on Corrosion
Available for download

Corrosion susceptibility of commonly used oil sands slurry pipeline materials was evaluated with and without bitumen coating on their surface.

Product Number: 51318-11291-SG
Author: Kofi Freeman Adane
Publication Date: 2018
Industry: Coatings and Linings
$0.00
$20.00
$20.00

Corrosion susceptibility of commonly used oil sands slurry pipeline materials was evaluated with and without bitumen coating on their surface. Both linear polarization resistance (LPR) and rotating cylinder electrode (RCE) experimental techniques were used to estimate corrosion rate in a model brackish water. Five material coupons were used: two corrosion susceptible coupons, two coupons from stainless steel and one from chromium carbide overlay material. The chromium carbide overlay material was excluded from RCE experiments. Several dissolved oxygen concentrations (from 1 ppm to 9 ppm) were studied using LPR whereas RCE testing was conducted only at 5 ppm and a rotational speed of 2000 rpm. All these conditions were selected based on industrial scale experience at oil sands mine sites. In general, similar corrosion rates were observed between corrosion susceptible materials, while corrosion rate increased with increased dissolved oxygen concentration irrespective of whether the coupons surface was coated with bitumen or not. Shear force (wall shear stress or pressure drop) tends to enhance corrosion rates irrespective of a bitumen surface coating for corrosion susceptible materials. However, bitumen on the surface tends to reduce the corrosion rate significantly. Measurable corrosion rates were observed from chromium carbide overlay coupons at dissolved oxygen levels higher than 2.5 ppm. Not surprisingly, negligible corrosion was observed on stainless steel materials irrespective of coupon surface or flow condition.

Key words: Corrosion; Pipeline; Oil sands; Flow; RCE, LPR

Corrosion susceptibility of commonly used oil sands slurry pipeline materials was evaluated with and without bitumen coating on their surface. Both linear polarization resistance (LPR) and rotating cylinder electrode (RCE) experimental techniques were used to estimate corrosion rate in a model brackish water. Five material coupons were used: two corrosion susceptible coupons, two coupons from stainless steel and one from chromium carbide overlay material. The chromium carbide overlay material was excluded from RCE experiments. Several dissolved oxygen concentrations (from 1 ppm to 9 ppm) were studied using LPR whereas RCE testing was conducted only at 5 ppm and a rotational speed of 2000 rpm. All these conditions were selected based on industrial scale experience at oil sands mine sites. In general, similar corrosion rates were observed between corrosion susceptible materials, while corrosion rate increased with increased dissolved oxygen concentration irrespective of whether the coupons surface was coated with bitumen or not. Shear force (wall shear stress or pressure drop) tends to enhance corrosion rates irrespective of a bitumen surface coating for corrosion susceptible materials. However, bitumen on the surface tends to reduce the corrosion rate significantly. Measurable corrosion rates were observed from chromium carbide overlay coupons at dissolved oxygen levels higher than 2.5 ppm. Not surprisingly, negligible corrosion was observed on stainless steel materials irrespective of coupon surface or flow condition.

Key words: Corrosion; Pipeline; Oil sands; Flow; RCE, LPR

Product tags
Also Purchased
Picture for 51318-11286- High Build PVDF Fluorocarbon Polymer Coatings For Corrosion Resistant Applications
Available for download

51318-11286- High Build PVDF Fluorocarbon Polymer Coatings For Corrosion Resistant Applications

Product Number: 51318-11286-SG
Author: George Fisher / Ben Gilmore
Publication Date: 2018
$20.00

Case histories of failures of traditional elastomeric, epoxy, FRP, and urethane linings and coatings. Discussion and presentation of the advantages of polyvinylidene fluoride (PVDF) will be outlined in the paper.
Picture for NACE MR0175/ISO 15156: Update on current document and where are we going?
Available for download

51318-11294-NACE MR0175/ISO 15156: Update on current document and where are we going?

Product Number: 51318-11294-SG
Author: Robert P. Badrak
Publication Date: 2018
$20.00

This standard is now undergoing a critical review to determine how it should change to meet the future needs of the Oil & Gas Industry better. Where are we headed with NACE MR0175/ISO 15156? The results of our collective initial efforts are presented.
Picture for The Impact of Biocide Choice and Dosing Strategy on Successful MIC Management under Anoxic and Flowing Conditions
Available for download

51318-11295-The Impact of Biocide Choice and Dosing Strategy on Successful MIC Management under Anoxic and Flowing Conditions

Product Number: 51318-11295-SG
Author: Nora Eibergen / Philip Maun / Matthew Wier / Brittany Caldwell / Geert van der Kraan / Kenneth Wunch
Publication Date: 2018
$20.00

This benchmarking study involved both the application of biocides to reduce biofilm formation on clean carbon steel and the application of biocide to established biofilm.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support