Intro
Swinton Technology supplied Chrysaor with an upgrade to the Metering Supervisory Computers at the Lomond and North Everest platforms. This work covered metering received from the Lomond, Erskine and Everest fields. The Erskine system is a separate station but is controlled through the Lomond MSC computers. The Lomond and Erskine metering systems were initially two separate systems, which have since been merged onto one pair of redundant MSC servers.
In upgrading the obsolescent metering system, Swinton Technology supplied industry compliant solutions to support Chrysaor’s metering needs.
Overview
Due to the obsolescence of the existing metering system, an update was required. Modifications were made to the FloBoss S600+ flow computers, with a firmware upgrade being provided on all flow computers. Additional configuration was required for the TruST Metering Supervisory Computer to include for additional functions. Swinton Technology’s metering solution incorporated a number of enhancements into the system, to make reporting easier and allow for future flexible updates.
Products used
A TruST Metering Supervisory Computer forms part of the Chrysaor North Everest system, and the Chrysaor Lomond and Erskine systems. Each system communicates with the FloBoss S600+ flow computers; each flow computer is dedicated to metering a single stream.
The North Everest, Lomond and Erskine stations meter Export Condensate and Export Gas on a continuous measurement basis. A dedicated Utilities flow computer is used for metering the Fuel and Flare Gas streams.
Outcomes
The scope of work for this project was slightly unusual in its nature; it involved upgrading two different systems on two different North Sea platforms, under one project. Many similarities can be recognized between the North Everest and Lomond platform, which allowed some duplication to occur. The system on the North Everest platform was the first to be developed. Once the new system was completed, it could be copied and amended to suit the Lomond system.
Despite multiple similarities between the three systems, there are some notable differences that prevented a simple copy from being supplied for each system. Each system contains different applications: gas, condensate, fuel gas, flare gas and test separator streams. As well as this, the RTU flow computer provided additional I/O and functionality which added to the overall complexity of the project.
Swinton Technology navigated these challenges to provide a metering solution to meet Chrysaor’s operational requirements. "The Swinton team fully understood the scope of works and were incredibly keen to progress things as swiftly and efficiently as possible, initially this was shown by the electrical wiring works, which were completed with both speed and skill. The installation and commissioning of the system were completed two days earlier than planned. We very much appreciate all of Swinton’s support and look forward to working with them for years to come” Scott Watt – Asset Metering Engineer, Harbour Energy.
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