This February 2015 video from the USA says about itself:
How Can Fracking Cause an Earthquake?
Columbia University geophysicist Heather Savage talks to the World Science Festival about the geological connections between fracking and earthquakes.
By Peter Lazenby in England:
Friday, October 26, 2018
Fracking site suffers worst tremor since process began
A FRACKING site in Lancashire today suffered its worst earth tremor since the controversial process began 12 days ago, bringing gas production to a halt.
The tremor, at a 0.8 level on the scale used to measure earth tremors, breached the maximum 0.5 “red level” at which the process has to be immediately suspended.
Gas extraction by energy exploitation firm Cuadrilla has been halted at the site at Preston New Road, near Fylde, for 18 hours.
The tremor took place two kilometres underground and was the 16th in eight days at the site, since the government allowed fracking to proceed following a seven-year ban on the controversial gas extraction process.
Fracking operations were banned in 2011 following earthquakes at a site near Blackpool.
A Cuadrilla spokesman confirmed that shale layers were being shattered when the tremor was recorded by the independent British Geological Survey.
Claire Stephenson from Frack Free Lancashire said: “The fact that these earth tremors are increasing in intensity is most concerning.
“We’ve now had 16. As previously theorised by geologists, Cuadrilla seem not to know what they are working with, in relation to major and minor geographical faults.
“We once again find our community in the midst of this being forced upon them, having to live through Cuadrilla’s experimentation phase.
“This is where we see that the fracking industry virtually gets to mark their own homework, and the promised ‘gold-standard, robust regulations’ as regularly touted by ministers who have minimal understanding of the fracking process, actually turns out to be nothing more than a gold-plated sham.”
The government gave the go-ahead to fracking at the Lancashire site despite planning permission being refused by Lancashire County Council, and widespread public opposition to the process.
In addition to producing oil and gas [by fracking], the energy industry produces a lot of water, about 10 barrels of water per barrel of oil on average. New research has found that where the produced water is stored underground influences the risk of induced earthquakes: here.