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51315-5763-Implementation of New “Green” Corrosion Inhibitors (CI) for Existing Offshore Gas Production

Picture for Implementation of New “Green” Corrosion Inhibitors (CI) for Existing Offshore Gas Production
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Product Number: 51315-5763-SG
ISBN: 5763 2015 CP
Author: Johannes Sonke
Publication Date: 2015
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$20.00
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To ensure and optimise oil and gas production and whilst maintaining integrity addition chemicals are added to avoid hydrate formation corrosion scaling and to stimulate production. To be successful on all areas a critical balance of chemistry is required where all aspects need to be considered and no details can be overlooked. Production from maturing fields becomes more complex and requires measures to keep production on a satisfactory level. Reduction of operational costs can be achieved by changing to wet gas operation including implementing single solutions for a wide range of conditions which allows for anticipation on continuously changing process conditions. Without effective corrosion inhibition Southern North Sea gas producing equipment would encounter severe corrosion. The corrosion rate depends on process conditions like flow temperature pressure (especially partial CO2 pressure) presence of water and organic acids. Corrosion inhibition plays an important role in combatting corrosion from these corrosive conditions. In this way CI safeguards process integrity and asset value directly connected to safe and reliable operations and an ensured environmental integrity. Due to increased environmental awareness (especially for offshore production) there lies a challenge to implement more environmental friendly “green” corrosion inhibitors (CI). These "green" CI have a different character and are mostly water partitioning chemicals unfortunately this also reduces the effectiveness and persistency of the CI. To introduce these new chemicals under increasingly complicated conditions in combination with the high stakes for process safety a sound process of evaluation with relevant criteria is required. To ensure an effective implementation a complete re-evaluation is proposed that includes; corrosion assessment a test program of the new CI corrosion management review of chemical injection hardware and a monitoring and inspection strategy. Only this holistic approach can make the implementation of these new “green” CI successful.
To ensure and optimise oil and gas production and whilst maintaining integrity addition chemicals are added to avoid hydrate formation corrosion scaling and to stimulate production. To be successful on all areas a critical balance of chemistry is required where all aspects need to be considered and no details can be overlooked. Production from maturing fields becomes more complex and requires measures to keep production on a satisfactory level. Reduction of operational costs can be achieved by changing to wet gas operation including implementing single solutions for a wide range of conditions which allows for anticipation on continuously changing process conditions. Without effective corrosion inhibition Southern North Sea gas producing equipment would encounter severe corrosion. The corrosion rate depends on process conditions like flow temperature pressure (especially partial CO2 pressure) presence of water and organic acids. Corrosion inhibition plays an important role in combatting corrosion from these corrosive conditions. In this way CI safeguards process integrity and asset value directly connected to safe and reliable operations and an ensured environmental integrity. Due to increased environmental awareness (especially for offshore production) there lies a challenge to implement more environmental friendly “green” corrosion inhibitors (CI). These "green" CI have a different character and are mostly water partitioning chemicals unfortunately this also reduces the effectiveness and persistency of the CI. To introduce these new chemicals under increasingly complicated conditions in combination with the high stakes for process safety a sound process of evaluation with relevant criteria is required. To ensure an effective implementation a complete re-evaluation is proposed that includes; corrosion assessment a test program of the new CI corrosion management review of chemical injection hardware and a monitoring and inspection strategy. Only this holistic approach can make the implementation of these new “green” CI successful.
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