Prior to the European Union Emissions Trading Scheme, the measurement of flare gas on oil and gas production facilities in the North Sea was driven mainly by statutory regulations that required operators to simply report emissions to the Environment Agency. Consequently, there was never an economic incentive to install metering equipment.
For offshore installations, flare and atmospheric vent headers are required to be purged in order to prevent oxygen ingress to the flare and atmospheric vent systems. This is required in order to avoid the formation of volatile mixtures in the headers, which could lead to explosions if ignited.
A major North Sea oil & gas operator has upgraded the Flare Gas Metering Systems on three of its platforms from previous versions of the Fluenta range of ultrasonic meters to the current generation. As the exclusive UK channel partner for Fluenta AS, process control specialists ABLE Instruments & Controls Ltd, supplied three Model FGM160 II’s to replace the existing Model FGM100 and FGM-130’s.
The diversity of flare gas metering installations highlights the need for the expertise provided by ABLE Instruments & Controls Ltd and Fluenta AS. Here we feature three BP project orders, their particular complexities and how ABLE and Fluenta working together ensures efficient execution.
Fluenta has been developing ultrasonic flare metering systems since 1985 and specializes in a single flare-metering product known as the Flare Gas Meter (FGM) 160. Our purpose – to continue leading the industry with the worlds most advanced ultrasonic technology for complex and challenging environments.
There are two primary concerns industry has when it comes to measuring flare gas and complying with provincial regulations; Overall range ability with an emphasis on low flow repeatability, as well as the ability to adapt to changing process conditions that include flow rates and per cent of carbon dioxide, hydrogen sulfide and methane, to name a few.
Discovered by BP in 1985, the Neptune and Mercury gas fields lie in the North Sea Southern Sector off the Yorkshire coast of England in water depths ranging from 29m to 46m. The normally unmanned Neptune Platform consists of a 630t jacket, held in place by 415t piles, supporting a 681t deck, commencing production in 1999.