SandRidge Energy, Inc. is a petroleum and natural gas exploration company headquartered in Oklahoma City, United States. In the third quarter of 2015, the company produced 79.9 thousand barrels of oil equivalent (489,000 GJ) per day. SandRidges drilling activities are focused on its oil properties in the Mid-Continent and Permian Basin. The Company also maintains production in West Texas. In 2015 the company added Colorado reserves in the Niobara Shale region.