Hydraulic Fracturing Rig (IMAGE) Penn State Caption According to the US Energy Information Administration, hydraulic fracturing accounted for more than one-half of US oil production and two-thirds of US gas production in 2015. That percentage is expected to rise as more states begin to adopt the practice. Credit Penn State Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.