The scientist, Brian Baptie, seismic project team leader with the British Geological Survey, said data from the two quakes near Blackpool — one of magnitude 2.3 on April 1, the other of magnitude 1.5 on May 27 — suggested the temblors arose from the same source. Cuadrilla Resources, a British energy company, was conducting hydraulic fracturing, or fracking, operations at a well nearby when the quakes occurred.