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Bowland Basin Shale Operations Past and Present, Micro-seismic Monitoring and Induced Seismicity Mitigation Protocol
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 75th EAGE Conference & Exhibition - Workshops, Jun 2013, cp-349-00032
- ISBN: 978-90-73834-49-1
Abstract
Shale gas exploration commenced in the Bowland basin of NW England with the Preese Hall 1 discovery well in August 2010. Two more vertical wells and a 100km2 3D seismic have since been completed and an OGIP resource estimate of 200 TCF. Following the drilling of Preese Hall-1 a multistage hydraulic fracture program commenced in spring 2011. Associated with this fracturing activity, two felt seismic tremors occurred on April 1st (ML=2.3) and May 27 (ML=1.5). Hydraulic fracturing operations were paused and a detailed geomechanical study concluded that seismicity at Preese Hall-1 was induced by injection of fluid into a fault zone within the proximity of the well bore.