Cenovus Energy is a Canadian-based integrated energy company headquartered in Calgary, with operations in Canada, the United States and the Asia Pacific region. It produces oil and natural gas, and its downstream business includes upgrading, refining and marketing operations in Canada and the U.S. Cenovus began independent operations in 2009 and acquired Husky Energy in 2021.
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Obsidian Energy LtdCalgary-based Obsidian Energy Ltd. explores, develops and produces oil and natural gas from a focused portfolio of Alberta assets. Its distinctive operating mix pairs a large, contiguous Peace River heavy-oil land base with light-oil properties in Willesden Green and Viking, and the company reported average production of 28,200 boe/d in the second quarter of 2026. Obsidian also operates owned infrastructure across its core areas, supporting continued drilling and development.EDINBORO, PA
Marathon Petroleum CorporationMarathon Petroleum Corporation is an integrated downstream and midstream energy company headquartered in Findlay, Ohio, operating the nation’s largest refining system. It produces and markets refined fuels and industrial petroleum products, and its marketing system includes branded retail locations across the United States. The company also owns the general partner and majority limited partner interest in MPLX LP, which operates gathering, processing, transportation and logistics assets.FINDLAY, OH
ConocoPhillipsHouston-headquartered ConocoPhillips is an independent exploration and production company that explores for, produces, transports and markets oil and natural gas worldwide. Its operations and activities span 15 countries, with a notable Alaska presence built over more than 50 years; the company is Alaska’s largest oil producer and operates major production hubs on the North Slope. ConocoPhillips places safety and environmental stewardship at the center of its global work.WADSWORTH, OH
BP p.l.cBP p.l.c. is a global integrated energy company that produces oil and gas, trades energy, and makes, ships and sells energy products. Its products include transport fuels and gas for heating and electricity generation, as well as raw materials used in everyday goods; it also invests selectively in electric-vehicle charging, biofuels, biogas, offshore wind and solar.WARMINSTER, PA