The largest quake had a magnitude of 4.3 , according to the Oklahoma Geological Survey . The earthquakes appear to be part of a trend of increasing earthquakes in Oklahoma . A well is typically drilled between 5,000 to 20,000 feet into the earth 's crust , then turns 90 degrees and continues horizontally for several thousand feet to where shale containing natural gas is believed to be . No major injuries or damage was reported from Saturday 's quakes , news station reported .
The largest quake had a magnitude of 4.3 , according to the Oklahoma Geological Survey . The earthquakes appear to be part of a trend of increasing earthquakes in Oklahoma . No major injuries or damage was reported from Saturday 's quakes , news station reported .