Developing a high reliability approach to corrosion inhibitor injection systems

As oil and gas exploration and production moves into deeper reservoirs and more challenging environments, higher temperatures, higher pressures and more corrosive environments place increased demands on inhibitor availability, with designs based on over 99% availability becoming common.
Maximising corrosion inhibitor availability is key to reducing risk, extending life and deferring replacement costs.
A study has been carried out to understand from first principles what drives inhibitor availability and injection performance.  Applying a multidisciplinary approach, combining reliability modelling, corrosion engineering, instrumentation and wireless technology, coupled to a web based data management system, BP has developed an integrated system approach to delivering high inhibitor availability.
This paper presents a review of field inhibitor availability data, reliability modelling and a system designed and commissioned to deliver and manage high chemical availability.

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