Nomac is an affiliate of Chesapeake Energy Corporation, the second-largest producer of natural gas, a Top 15 producer of oil and natural gas liquids and the most active driller of new wells in the U.S. Chesapeake has been named for six consecutive years to FORTUNE magazine's 100 Best Companies to Work For® list. Virtually all of Nomac’s rigs are employed in unconventional shale resource plays, making Nomac one of the leading horizontal drillers. Over the last 10 years, Nomac has been the fastest-growing driller in the U.S., growing from five rigs in 2001 to 103 marketable rigs today.

In 2011 Nomac Services was formed to provide integrated directional drilling, mud logging, geosteering and geotechnical services in both conventional and horizontal applications to maximize drilling efficiencies and lower costs.