Menu
Search
Filters
Close
Menu

Carbon Steel Corrosion On Production Environment, Evaluating The Impact Of CO2 Partial Pressure, BSW And Oil Characteristics On Tubular Life Extend

Picture for Carbon Steel Corrosion On Production Environment, Evaluating The Impact Of CO2 Partial Pressure, BSW And Oil Characteristics On Tubular Life Extend
Available for download
Product Number: 51321-16868-SG
Author: Merlin C. E. Bandeira; Rogaciano M. Moreira; Felipe S. Assunção; Oscar R. Mattos; Gustavo L. Vaz; Jefferson R. Oliveira; Ilson Palmieri; Bruno Diehl Neto
Publication Date: 2021
$0.00
$20.00
$20.00

The high productivity of pre-salt exploratory wells led to a re-evaluation of Petrobras' model of offshore
oil production and exploration. We present here the study that allowed the conversion of exploratory
wells into producers, based on the corrosion resistance of carbon steel in different scenarios of pre-salt
field production. The aim of the test program was to evaluate the influence of the produced water
content (BSW), CO2 partial pressure and oil characteristics on the carbon steel corrosion resistance.
General corrosion analysis showed that for brine content below 40% corrosion rates ca. 0.05 mm/year
for 28-day tests. Higher CO2 partial pressure did not lead to increased corrosiveness, unlike shear
stress. There was localized corrosion in most of the evaluated test conditions, confirming the
importance of using laboratory techniques that allow such analysis. Localized as well as generalized
corrosion kinetics decrease over time, confirming that laboratory tests, even when replicating field
conditions, are more conservative as the operation time of the production columns will be extremely
longer than laboratory test times. Based on results of this test program it was possible to extend the
operation of exploratory wells adopting as safety criteria for well abandonment the produced water
content (i.e. BS&W content) and additionally monitoring the internal pressure of production tubing.

The high productivity of pre-salt exploratory wells led to a re-evaluation of Petrobras' model of offshore
oil production and exploration. We present here the study that allowed the conversion of exploratory
wells into producers, based on the corrosion resistance of carbon steel in different scenarios of pre-salt
field production. The aim of the test program was to evaluate the influence of the produced water
content (BSW), CO2 partial pressure and oil characteristics on the carbon steel corrosion resistance.
General corrosion analysis showed that for brine content below 40% corrosion rates ca. 0.05 mm/year
for 28-day tests. Higher CO2 partial pressure did not lead to increased corrosiveness, unlike shear
stress. There was localized corrosion in most of the evaluated test conditions, confirming the
importance of using laboratory techniques that allow such analysis. Localized as well as generalized
corrosion kinetics decrease over time, confirming that laboratory tests, even when replicating field
conditions, are more conservative as the operation time of the production columns will be extremely
longer than laboratory test times. Based on results of this test program it was possible to extend the
operation of exploratory wells adopting as safety criteria for well abandonment the produced water
content (i.e. BS&W content) and additionally monitoring the internal pressure of production tubing.

Product tags
Also Purchased
Picture for The Effect of High Partial Pressure of CO2 on the Corrosion Mechanism of Carbon Steel in H2O-CO2 Systems
Available for download

51318-11623-The Effect of High Partial Pressure of CO2 on the Corrosion Mechanism of Carbon Steel in H2O-CO2 Systems

Product Number: 51318-11623-SG
Author: Tatiana C. Almeida / Oscar R. Mattos / Rogaciano M. Moreira / Merlin C. E. Bandeira
Publication Date: 2018
$20.00

The corrosion mechanism of X65 carbon steel was evaluated in water environment by increasing CO2 partial pressure from 1 bar at 24 °C to 110 bar at 40 °C, reaching conditions that include water saturated with supercritical CO2.
Picture for 08344 Experimental Evaluation of Corrosion Inhibitor Performance in Presence of Iron Sulfide in CO2/
Available for download

08344 Experimental Evaluation of Corrosion Inhibitor Performance in Presence of Iron Sulfide in CO2/H2S Environment

Product Number: 51300-08344-SG
ISBN: 08344 2008 CP
Author: Mohsen H. Achour, Juri Kolts, Phillip Humble, and Roger L. Hudgins
Publication Date: 2008
$20.00
Picture for 06156 OPERATIONAL LIMITS FOR AUSTENITIC STAINLESS
Available for download

06156 OPERATIONAL LIMITS FOR AUSTENITIC STAINLESS STEELS IN H2S-CONTAINING ENVIRONMENTS

Product Number: 51300-06156-SG
ISBN: 06156 2006 CP
Author: Elizabeth Trillo, Russell D. Kane, Manuel Maligas, Michael Coles, Elliott Turbeville
$20.00

This paper describes a series of tests on two grades of stainless steels UNS S31600 (AISI 316) and UNS S66286 (ASTM A453 Gr. 660– Alloy A286) in simulated H2S-contining oil and gas service environments. The purpose of this study was to evaluate these materials for stress corrosion cracking.
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