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Controversial fracking in the UK could be doomed after a study found that the amount of gas it produces could be significantly lower than previously thought.
Estimates that Britain had the equivalent of enough gas to supply the UK for 50 years were seized on by politicians including former Prime Minister David Cameron.
Britain - Britain - Feet - Gas - Amount
He said Britain should 'get fracking' and that Britain was sitting on 1,300 trillion cubic feet of gas - around the same amount of gas as in the North Sea.
The 2013 study estimated the productivity of the shale fields in northern England by comparing the region to data taken from shale beds in the US.
New - Estimates - Analysis - Shale - Rock
New estimates based on lab analysis of actual shale rock suggest there may be less than 10 years' worth of gas at current levels of demand, at 150 trillion cubic feet.
Researchers from the University of Nottingham and British Geological Survey (BGS) analysed samples taken from Bowland in Lancashire.
Shale - Gas - Liquid - Pressure - Underground
Fracking for shale gas, in which liquid is pumped at high pressure deep underground to fracture the rock and release gas, has proved controversial as attempts have been made to get the industry off the ground in the UK.
Backers, including the Government, claim exploiting the fossil fuel could reduce reliance on imports, secure supplies, help cut carbon emissions and create jobs.
Opponents - Process - Earthquakes - Countryside - UK
But opponents of the process say it can cause earthquakes, damage the countryside and keep the UK hooked on fossil fuels instead of focusing on renewables to help tackle climate change.
The new study used a high pressure water technique that simulates oil and gas generation in deep reservoirs and applied it to shale to evaluate in the laboratory how much gas could be extracted.
Rock - Locations - Findings - Whole - Bowland
It analysed shale rock from two locations, and extrapolated the findings to the whole of the Bowland Shale.
Professor Colin Snape, who headed the...
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