Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

Mechanistic Studies of Sour Underdeposit Corrosion in the Presence of Chemical Inhibition

Picture for Mechanistic Studies of Sour Underdeposit Corrosion in the Presence of Chemical Inhibition
Available for download
Product Number: 51315-6004-SG
ISBN: 6004 2015 CP
Author: Zhengwei Liu
Publication Date: 2015
$0.00
$20.00
$20.00
Failure of steel materials in sour environments is of great importance in the oil and gas industry. The iron sulfide deposits created from steel corrosion in the presence of H2S complicate the corrosion failure mechanism and the ability to inhibit those mechanisms. Iron sulfide films decrease the general corrosion rate but introduce higher occurrences of pitting corrosion. Most sour failures in the field are due to pitting or underdeposit corrosion. Pitting and underdeposit corrosion are more difficult to monitor and inhibit. Several studies have been conducted describing the bulk behavior of sour corrosion with and without chemical addition in the presence of underdeposit corrosion. However little information exists on the sub-mechanisms involved in the underdeposit corrosion process in the presence of chemicals. The inhibition performance could be significantly affected by three main sub-mechanisms each having variable contribution to the overall mechanistic process 1) diffusion through the porous deposit film 2) adsorption on the steel anode surface and 3) adsorption on the iron sulfide cathode surface. This paper explores the contribution of each of these sub-mechanisms to the inhibition of the underdeposit corrosion process. It also studies the effect of various corrosion inhibitors on each sub-mechanism. The experimental procedure used in this investigation will include galvanic coupling of a mild steel electrode to an electrode made from solid iron sulfide. The data collected will be used to quantitatively analyze the individual effects on chemical inhibition from diffusion adsorption onto the iron surface as well as adsorption onto the iron sulfide surface.
Failure of steel materials in sour environments is of great importance in the oil and gas industry. The iron sulfide deposits created from steel corrosion in the presence of H2S complicate the corrosion failure mechanism and the ability to inhibit those mechanisms. Iron sulfide films decrease the general corrosion rate but introduce higher occurrences of pitting corrosion. Most sour failures in the field are due to pitting or underdeposit corrosion. Pitting and underdeposit corrosion are more difficult to monitor and inhibit. Several studies have been conducted describing the bulk behavior of sour corrosion with and without chemical addition in the presence of underdeposit corrosion. However little information exists on the sub-mechanisms involved in the underdeposit corrosion process in the presence of chemicals. The inhibition performance could be significantly affected by three main sub-mechanisms each having variable contribution to the overall mechanistic process 1) diffusion through the porous deposit film 2) adsorption on the steel anode surface and 3) adsorption on the iron sulfide cathode surface. This paper explores the contribution of each of these sub-mechanisms to the inhibition of the underdeposit corrosion process. It also studies the effect of various corrosion inhibitors on each sub-mechanism. The experimental procedure used in this investigation will include galvanic coupling of a mild steel electrode to an electrode made from solid iron sulfide. The data collected will be used to quantitatively analyze the individual effects on chemical inhibition from diffusion adsorption onto the iron surface as well as adsorption onto the iron sulfide surface.
Also Purchased
Picture for Assessment of Underdeposit Corrosion and Mitigation Using Chemicals
Available for download

51316-7639-Assessment of Underdeposit Corrosion and Mitigation Using Chemicals

Product Number: 51316-7639-SG
ISBN: 7639 2016 CP
Author: Muazu Mohammed
Publication Date: 2016
$20.00
Picture for 10331 Development of Standard Test Method for Investigation of Underdeposit Corrosion
Available for download

10331 Development of Standard Test Method for Investigation of Underdeposit Corrosion

Product Number: 51300-10331-SG
ISBN: 10331 2010 CP
Author: Katerina Lepková and Rolf Gubner
Publication Date: 2010
$20.00
Picture for Investigation into Underdeposit Corrosion in Halfdan Production Tubulars
Available for download

51314-3746-Investigation into Underdeposit Corrosion in Halfdan Production Tubulars

Product Number: 51314-3746-SG
ISBN: 3746 2014 CP
Author: Lisbeth Hilbert
Publication Date: 2014
$0.00
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