CVR Energy is a diversified holding company primarily engaged in the petroleum refining and nitrogen fertilizer manufacturing industries.
SM Energy
Denver, United States
Buckeye Partners
Houston, United States
Marathon Oil
Houston, United States
DCP Midstream
Denver, United States
ONEOK
Tulsa, United States
Southwestern Energy
Spring, United States
Newpark
Spring, United States
Hunt Oil
Dallas, United States
Noble Energy
Houston, United States
CITGO Petroleum
Houston, United States
Parker Drilling
Houston, United States
Suburban Propane
Fort Dix, United States