EA approves nitrogen lift at Cuadrilla fracking site

Fracking company Cuadrilla Resources has been granted a permit variation by the Environment Agency (EA) which could see the release of methane and benzene into the atmosphere.

The EA confirmed last Thursday that a fifth change to the company’s environmental permit for the Preston New Road shale gas site had been approved, allowing the use of a technique known as nitrogen lifting. 

This technique, a standard process used in the oil and gas industry to assist in initiating well production, uses the inert gas nitrogen to encourage liquids, such as fracking and formation fluids, to the surface of a well when it cannot flow by itself or can be used to increase production. 

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