We have ensured that strong controls are in place to mitigate seismic risks. Operators in the UK must avoid hydraulically fracturing near faults, and must monitor seismic activity before, during and after operations. Operations will halt if seismic activity exceeds a magnitude of 0.5 or greater on the Richter scale, and the pressure of fluid in the well will be reduced immediately.
Studies in the United States(1) have shown that most induced seismicity is caused by re-injection of waste and produced waters from oil and gas operations, both conventional and unconventional. Re-injection of waste and produced waters will not be permitted from shale gas wells in the UK.