COLUMBUS, Ohio (AP) _ The state Department of Natural Resources says historic amounts of oil and natural gas are being produced by Ohio shale wells.

Statistics released by the department Thursday show more than 10 million barrels of oil and 405 billion cubic feet of natural gas were produced during the second quarter of the year. 

The department says those amounts were more than in any previous three-month reporting period.

During the same period in 2014, the state's wells produced about 4.4 million barrels of oil and 156 billion cubic feet of natural gas.

The state says oil drilling production increased 126 percent and gas drilling production by 160 percent in the first half of this year compared with the first half of 2014.

The report listed 978 wells producing oil and gas.