Fracking has resumed at the Preston New Road site, shale gas firm Cuadrilla has said.
They suspended the process in December following a spate of seismic events, including one earthquake which measured 1.5 on the richter scale.
Cuadrilla say the work will be completed by the end of November, followed by flow testing of the well, with gas flow results expected in 2020.
In a statement, Francis Egan, Chief Executive Officer of Cuadrilla, said:
Last month, the Leader of the Labour Party, Jeremy Corbyn joined fracking protestors at the Preston New Road site, calling for a ban on fracking.