Chief Oil & Gas is engaged in the exploration and production of oil and natural gas reserves from the Marcellus shale in northeastern Pennsylvania.
Chief Oil & Gas has been operating in the Marcellus shale region since 2007 and drilled its first well in Lycoming County, Pennsylvania.
Chief currently operates a two drilling rig program in northeastern Pennsylvania in Bradford, Lycoming, Sullivan, Susquehanna and Wyoming
Counties. Chief produces over 850 Mmcfd and operates more than 270 wells in the region.