Fracking firm Cuadrilla wants to raise the current limit for the size of tremors that can be felt as a result of its drilling operations.
Under current rules, drilling must be stopped for 18 hours if it triggers earth tremors above a 0.5 magnitude.... as has happened at Preston New Road.
But the company claims other industries enjoy "higher thresholds" when it comes to tremors.
Environmental group Greenpeace said the government should focus on cleaner energy to tackle climate change.
Meanwhile anti fracking campaigners continue to protest at the gates to the site at Little Plumpton.