08/25/2019 | Press release | Distributed by Public on 08/25/2019 04:07
Hydraulic fracturing operations at the Preston New Road site are currently paused following a seismic event.
The event was recorded at 23:01 yesterday (24 August) with a magnitude 2.1ML and is the largest to date. As this event exceeded the magnitude 0.5 threshold in the 'traffic light system', the operator has suspended injection activities, reduced well pressure and is continuing to monitor seismicity during this pause.
During pauses, the OGA compares the location, magnitude and ground motion of these seismic events against the operator's agreed Hydraulic Fracture Plan (HFP).
OGA Director of Regulation, Tom Wheeler, said: 'Our regulatory regime is deliberately cautious with strict controls in place to manage and monitor seismicity. This is the largest seismic event triggered by the current operations at Preston New Road to date and it may have been felt by some people close to the site. This pause in operations allows us to review the event, checking whether it is in line with the geological understanding set out in the operator's HFP and that the risk of induced seismicity is being appropriately managed.'
Notes to editors