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

Petar Durdevic, Chitra Sangaraju Raju, Zhenyu Yang

Research output: Contribution to journalConference article in JournalResearchpeer-review

4 Citations (Scopus)
229 Downloads (Pure)

Abstract

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.
Original languageEnglish
Book seriesIFAC-PapersOnLine
Volume51
Issue number8
Pages (from-to)170-177
Number of pages8
ISSN1474-6670
DOIs
Publication statusPublished - 1 Jan 2018
Event3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018 - Esbjerg, Denmark
Duration: 30 May 20181 Jun 2018
Conference number: 3

Conference

Conference3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018
Number3
Country/TerritoryDenmark
CityEsbjerg
Period30/05/201801/06/2018

Keywords

  • Dissolved Oxygen
  • Injection Water
  • Deaeration
  • Oil and Gas
  • Offshore
  • On-lineMonitoring
  • Feedback Control

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