Oil companies

ConocoPhillips is an independent exploration and production company focused on proven reserves and production of liquid and natural gas.

Marathon Petroleum Corporation (MPC) is a petroleum product refining, marketing, retail, and midstream company.

Valero Energy is a petroleum refining and marketing company.

Marathon Oil is an independent oil and natural gas exploration and production company.

Sunoco is a growth-oriented master limited partnership that primarily deals with the distribution of motor fuel to convenience stores, independent dealers and commercial customers.

Saudi Arabian Oil Company (Saudi Aramco) is an integrated energy and chemicals company.

Hess is an exploration and production company that develops, produces, purchases, transports, and sells crude oil, natural gas liquids, and natural gas.

Glencore (formerly known as Glencore Xstrata) is a diversified natural resources company engaged in the production, refinement, processing, storage, transport, and marketing of metals and minerals, energy products, and agricultural products.

WPX Energy is an independent oil and natural gas exploration and production company.

Neste is a company creating sustainable solutions for transport, aviation, polymers, and chemicals sectors.

Nabors is a company that owns and operates land-based drilling rig fleets and provides offshore platform rigs.

RWE is an electricity and gas company that generates, distributes, and sells electricity, as well as produces, distributes, and sells gas.