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UK Report – Preese Hall Shale Gas Fracturing review & recommendations for induced seismic mitigation

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UK Department of Energy and Climate Change (DECC): “A panel of independent experts have reported to DECC on the causation of the seismic events experienced in the Blackpool area last year during hydraulic fracturing operations at Preese Hall, and have made recommendations to mitigate the risks of similar events in future fracturing operations. The report: Preese Hall Shale Gas Fracturing Review & Recommendations for Induced Seismic Mitigation, April 2012

  • On 1 April and 27 May 2011 two earthquakes with magnitudes 2.3 and 1.5 were felt in the Blackpool area. These earthquakes were suspected to be linked to hydraulic fracture treatments at the Preese Hall well operated by Cuadrilla Resources Ltd. The hydraulic fracture treatments were carried out during exploration of a shale gas reservoir in the Bowland basin. As a result of the earthquakes, operations were suspended at Preese Hall and Cuadrilla Resources Ltd were requested to undertake a full technical study into the relationship between the earthquakes and their operations. Cuadrilla submitted to DECC a synthesis report with a number of technical appendices on 2 November 2011, and published this material on their website. These reports examine seismological and geomechanical aspects of the seismicity in relation to the hydraulic fracture treatments, along with detailed background material on the regional geology and rock physics. They also estimated future seismic hazard and proposed recommendations for future operations to mitigate seismic risk.”
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