Case Study Improving Annulus Top Up Efficiency for Centrica Storage Project: Centrica Storage was undertaking an annulus top up campaign on the Rough 47/8A platform in the UKCS Southern North Sea. Full annuli are critical for accurate pressure monitoring and ensuring the fluid head remains above kill weight so regular top ups are an essential part of wellhead maintenance. In order to minimise cost and downtime and improve the efficiency of the campaign, Centrica Storage decided to employ Unity’s Annulus Lubrication Filling (ALF) Valve. Centrica personnel were trained by Unity in the correct rig-up and use of the ALF Valve so they could conduct the operation quickly and efficiently. Solution: • Unity’s ALF Valve allows the annulus to be filled during annulus lubrications

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