Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tension

Daley Lasebikan (Corresponding Author), Alfred Akisanya, Bill Deans

Research output: Contribution to journalArticle

Abstract

The oil and gas industry, like many others is constantly looking at ways to keep
costs of well completion down based on cost effective solutions that do not
compromise safety. This combined with the desire to develop new oil and gas
fields that are very challenging in terms of operating pressures, temperatures, and corrosivity of the environment may result in the need to utilize materials closer to their mechanical loading limit in a corrosive environment. Modern alloys of high strength and corrosion resistance are often more susceptible to cracking. With a move toward higher production pressures, and temperature, production tubing for downhole use may become a limiting factor for exploration of future oil and gas wells. Typically, materials and corrosion test samples are usually set up to examine material behavior under single mode loading (e.g., tensile sample) and not combined loads experienced by a production tubing in a well completion. A novel test set-up was developed to simulate stresses in a production tubing string with the potential to define combined load conditions in a corrosive environment once mechanical load limit is determined. In small scale tests cold worked super duplex stainless steel mini pipes were subjected to combined load, that is, axial stress simulating weight of the tubing string and internal pressure (from the reservoir). The mechanical load limit (failure envelope) was determined in the absence of a corrosive environment thereafter the mini pipes were subjected to load conditions below mechanical limit in a corrosive environment to determine load and environment conditions that would not lead to crack initiation. The potential pipe load limit when in the corrosive environment is below the corrosion test load condition to avoid crack initiation and failure.
Original languageEnglish
Pages (from-to)661-675
Number of pages15
JournalMaterials and Corrosion
Volume70
Issue number4
Early online date28 Nov 2018
DOIs
Publication statusPublished - 30 Apr 2019

Fingerprint

Steel pipe
Tubing
Stress corrosion cracking
Pitting
Load limits
Stainless steel
Well completion
Pipe
Crack initiation
Corrosion
Gas industry
Corrosion resistance
Loads (forces)
Temperature
Gases
Oils
Costs

Keywords

  • ammonium bisulphite
  • axial tension
  • chloride
  • combined loading
  • crack initiation
  • internal pressure
  • mini pipe
  • pitting
  • stress corrosion cracking
  • super duplex stainless steel

Cite this

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title = "Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tension",
abstract = "The oil and gas industry, like many others is constantly looking at ways to keepcosts of well completion down based on cost effective solutions that do notcompromise safety. This combined with the desire to develop new oil and gasfields that are very challenging in terms of operating pressures, temperatures, and corrosivity of the environment may result in the need to utilize materials closer to their mechanical loading limit in a corrosive environment. Modern alloys of high strength and corrosion resistance are often more susceptible to cracking. With a move toward higher production pressures, and temperature, production tubing for downhole use may become a limiting factor for exploration of future oil and gas wells. Typically, materials and corrosion test samples are usually set up to examine material behavior under single mode loading (e.g., tensile sample) and not combined loads experienced by a production tubing in a well completion. A novel test set-up was developed to simulate stresses in a production tubing string with the potential to define combined load conditions in a corrosive environment once mechanical load limit is determined. In small scale tests cold worked super duplex stainless steel mini pipes were subjected to combined load, that is, axial stress simulating weight of the tubing string and internal pressure (from the reservoir). The mechanical load limit (failure envelope) was determined in the absence of a corrosive environment thereafter the mini pipes were subjected to load conditions below mechanical limit in a corrosive environment to determine load and environment conditions that would not lead to crack initiation. The potential pipe load limit when in the corrosive environment is below the corrosion test load condition to avoid crack initiation and failure.",
keywords = "ammonium bisulphite, axial tension, chloride, combined loading, crack initiation, internal pressure, mini pipe, pitting, stress corrosion cracking, super duplex stainless steel",
author = "Daley Lasebikan and Alfred Akisanya and Bill Deans",
note = "The financial support of Shell UK is acknowledged. The authors would like to thank the following technical staff, Stuart Herbert, Alistair Robertson for the machining of the mini pipes, Derek Logan, and Irene Brand for resolving several electrical issues and providing accessories, and Jim Gall for help with the test set‐up and prompt supply of tools and equipment.",
year = "2019",
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AU - Lasebikan, Daley

AU - Akisanya, Alfred

AU - Deans, Bill

N1 - The financial support of Shell UK is acknowledged. The authors would like to thank the following technical staff, Stuart Herbert, Alistair Robertson for the machining of the mini pipes, Derek Logan, and Irene Brand for resolving several electrical issues and providing accessories, and Jim Gall for help with the test set‐up and prompt supply of tools and equipment.

PY - 2019/4/30

Y1 - 2019/4/30

N2 - The oil and gas industry, like many others is constantly looking at ways to keepcosts of well completion down based on cost effective solutions that do notcompromise safety. This combined with the desire to develop new oil and gasfields that are very challenging in terms of operating pressures, temperatures, and corrosivity of the environment may result in the need to utilize materials closer to their mechanical loading limit in a corrosive environment. Modern alloys of high strength and corrosion resistance are often more susceptible to cracking. With a move toward higher production pressures, and temperature, production tubing for downhole use may become a limiting factor for exploration of future oil and gas wells. Typically, materials and corrosion test samples are usually set up to examine material behavior under single mode loading (e.g., tensile sample) and not combined loads experienced by a production tubing in a well completion. A novel test set-up was developed to simulate stresses in a production tubing string with the potential to define combined load conditions in a corrosive environment once mechanical load limit is determined. In small scale tests cold worked super duplex stainless steel mini pipes were subjected to combined load, that is, axial stress simulating weight of the tubing string and internal pressure (from the reservoir). The mechanical load limit (failure envelope) was determined in the absence of a corrosive environment thereafter the mini pipes were subjected to load conditions below mechanical limit in a corrosive environment to determine load and environment conditions that would not lead to crack initiation. The potential pipe load limit when in the corrosive environment is below the corrosion test load condition to avoid crack initiation and failure.

AB - The oil and gas industry, like many others is constantly looking at ways to keepcosts of well completion down based on cost effective solutions that do notcompromise safety. This combined with the desire to develop new oil and gasfields that are very challenging in terms of operating pressures, temperatures, and corrosivity of the environment may result in the need to utilize materials closer to their mechanical loading limit in a corrosive environment. Modern alloys of high strength and corrosion resistance are often more susceptible to cracking. With a move toward higher production pressures, and temperature, production tubing for downhole use may become a limiting factor for exploration of future oil and gas wells. Typically, materials and corrosion test samples are usually set up to examine material behavior under single mode loading (e.g., tensile sample) and not combined loads experienced by a production tubing in a well completion. A novel test set-up was developed to simulate stresses in a production tubing string with the potential to define combined load conditions in a corrosive environment once mechanical load limit is determined. In small scale tests cold worked super duplex stainless steel mini pipes were subjected to combined load, that is, axial stress simulating weight of the tubing string and internal pressure (from the reservoir). The mechanical load limit (failure envelope) was determined in the absence of a corrosive environment thereafter the mini pipes were subjected to load conditions below mechanical limit in a corrosive environment to determine load and environment conditions that would not lead to crack initiation. The potential pipe load limit when in the corrosive environment is below the corrosion test load condition to avoid crack initiation and failure.

KW - ammonium bisulphite

KW - axial tension

KW - chloride

KW - combined loading

KW - crack initiation

KW - internal pressure

KW - mini pipe

KW - pitting

KW - stress corrosion cracking

KW - super duplex stainless steel

UR - http://www.mendeley.com/research/effect-ammonium-bisulphite-chloride-pitting-stress-corrosion-cracking-resistance-super-duplex-stainl

U2 - 10.1002/maco.201810502

DO - 10.1002/maco.201810502

M3 - Article

VL - 70

SP - 661

EP - 675

JO - Materials and Corrosion

JF - Materials and Corrosion

SN - 1521-4176

IS - 4

ER -