Potential for real-time monitoring and control of dissolved oxygen in the injection water treatment process

Petar Durdevic Løhndorf, Chitra Sangaraju Raju, Zhenyu Yang

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

Resumé

Injection of water into wells is a common practice in offshore oil and gas installations, and here as in many other industries the water has to be deaerated before it is sent through miles of pipelines to reduce the risk of corrosion in those pipelines and other downstream equipment. It requires extremely low concentrations of dissolved oxygen for the corrosion of metals to begin, and removing the dissolved oxygen is currently done in large vacuum deaeration towers, a highly energy demanding process, along with additional injection of chemical oxygen scavengers. In many instances these processes are controlled in a feed-forward manner, where the operators rely on infrequent sampling and corresponding measurements to control the process. The possibilities for optimisation in this field are thus numerous. The main challenges are online measurements of dissolved oxygen and their use in feedback control. This article gives a brief review of the state-of-the-art and investigates the potential of using dissolved oxygen as a reliable feedback parameter, taking inspiration from onshore waste water industries which have been dealing with dissolved oxygen feedback control since the 1970’s.
OriginalsprogEngelsk
BogserieIFAC-PapersOnLine
Vol/bind51
Udgave nummer8
Sider (fra-til)170-177
Antal sider8
ISSN1474-6670
DOI
StatusUdgivet - 1 jan. 2018
Begivenhed3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018 - Esbjerg, Danmark
Varighed: 30 maj 20181 jun. 2018
Konferencens nummer: 3

Konference

Konference3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018
Nummer3
LandDanmark
ByEsbjerg
Periode30/05/201801/06/2018

Fingerprint

Dissolved oxygen
Water treatment
Monitoring
Feedback control
Pipelines
Corrosion
Towers
Mathematical operators
Water
Industry
Wastewater
Vacuum
Sampling
Feedback
Oxygen
Gases

Citer dette

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Potential for real-time monitoring and control of dissolved oxygen in the injection water treatment process. / Løhndorf, Petar Durdevic; Raju, Chitra Sangaraju; Yang, Zhenyu.

I: IFAC-PapersOnLine, Bind 51, Nr. 8, 01.01.2018, s. 170-177.

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

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AU - Raju, Chitra Sangaraju

AU - Yang, Zhenyu

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N2 - Injection of water into wells is a common practice in offshore oil and gas installations, and here as in many other industries the water has to be deaerated before it is sent through miles of pipelines to reduce the risk of corrosion in those pipelines and other downstream equipment. It requires extremely low concentrations of dissolved oxygen for the corrosion of metals to begin, and removing the dissolved oxygen is currently done in large vacuum deaeration towers, a highly energy demanding process, along with additional injection of chemical oxygen scavengers. In many instances these processes are controlled in a feed-forward manner, where the operators rely on infrequent sampling and corresponding measurements to control the process. The possibilities for optimisation in this field are thus numerous. The main challenges are online measurements of dissolved oxygen and their use in feedback control. This article gives a brief review of the state-of-the-art and investigates the potential of using dissolved oxygen as a reliable feedback parameter, taking inspiration from onshore waste water industries which have been dealing with dissolved oxygen feedback control since the 1970’s.

AB - Injection of water into wells is a common practice in offshore oil and gas installations, and here as in many other industries the water has to be deaerated before it is sent through miles of pipelines to reduce the risk of corrosion in those pipelines and other downstream equipment. It requires extremely low concentrations of dissolved oxygen for the corrosion of metals to begin, and removing the dissolved oxygen is currently done in large vacuum deaeration towers, a highly energy demanding process, along with additional injection of chemical oxygen scavengers. In many instances these processes are controlled in a feed-forward manner, where the operators rely on infrequent sampling and corresponding measurements to control the process. The possibilities for optimisation in this field are thus numerous. The main challenges are online measurements of dissolved oxygen and their use in feedback control. This article gives a brief review of the state-of-the-art and investigates the potential of using dissolved oxygen as a reliable feedback parameter, taking inspiration from onshore waste water industries which have been dealing with dissolved oxygen feedback control since the 1970’s.

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