XTO Energy

XTO Energy Inc. is an American energy company specializing in the drilling of unconventional oil and natural gas assets, typically from shale rock through a process known as hydraulic fracturing. It is a subsidiary of Exxon Mobil Corporation.The acquisition of XTO in 2010 made Exxon the largest producer of natural gas in the U.S. Since then, XTO's resource portfolio has tripled through several acquisitions.