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Devon Energy is an oil and gas producer with acreage in several top US shale plays. While roughly two thirds of its production comes from the Permian Basin, it also holds a meaningful presence in the Anadarko, Eagle Ford, and Bakken basins. At the end of 2023, Devon reported net proved reserves of 1.8 billion barrels of oil equivalent. Net production averaged roughly 658,000 barrels of oil equivalent per day in 2023 at a ratio of 73% oil and natural gas liquids and 27% natural gas.

TechnipFMC is the largest pure-play offshore oilfield service provider, offering integrated deep-water offshore oil and gas development solutions that span the full spectrum of subsea equipment and subsea engineering and construction services. The company also provides various surface equipment used with onshore oil and gas wells. TechnipFMC originated with the 2017 merger of predecessor companies Technip and FMC Technologies.

Core Laboratories is the premier provider of reservoir description and production enhancement services for oil and gas exploration and production. It provides data and analytics to aid well operators in determining optimal methods for recovering, processing, and refining hydrocarbons from a well. It also manufactures the associated lab equipment for its services.

ChampionX provides chemical solutions and equipment for onshore and offshore oil and gas production. Its engineering expertise spans the well lifecycle, but the firm maintains a particular focus on the production phase. Key offerings include artificial lift services and drilling technologies, specializing in polycrystalline diamond cutter inserts. ChampionX was formed after Apergy acquired its chemical technologies business from Ecolab in 2020.