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Cona Resources Ltd. acquires, explores for, develops, and produces petroleum and natural gas reserves in western Canada. The company has 100% interests in the Cactus Lake property located to the south of Macklin, Saskatchewan; the Winter property located to the northwest of Unity, Saskatchewan; and the Court property located to the southeast of Kerrobert, Saskatchewan. It also has interests in the Waseca and Rex formations; and in the Thermal properties located to the southeast of Macklin, Saskatchewan. The company was formerly known as Northern Blizzard Resources Inc. and changed its name to Cona Resources Ltd. in July 2017. Cona Resources Ltd. was incorporated in 2009 and is headquartered in Calgary, Canada.

China Petroleum & Chemical Corporation, an energy and chemical company, engages in the oil and gas and chemical operations in Mainland China, Singapore, and internationally. It operates through five segments: Exploration and Production, Refining, Marketing and Distribution, Chemicals, and Corporate and Others. The company explores and develops oil fields; produces natural gas; produces, processes, purifies, imports, and trades in crude oil; manufactures, sells, and trades in petroleum products; owns and operates oil depots and service stations; and produces, distributes, and sells refined petroleum products, including gasoline and diesel. It also manufactures, sells, markets, and distributes petrochemicals and derivative petrochemical products, and other chemical products, such as basic organic chemicals, synthetic resins, synthetic fiber monomers and polymers, synthetic fibers, synthetic rubber, and chemical fertilizers, as well as ethylene. In addition, the company explores, produces, and sells petroleum and natural gas; produces, stores, transports, and sells petrochemical and coal chemical products; produces and sells catalyst products, lubricant base oil, polyester chips and fibers, plastics, and petrochemical materials; and offers crude oil pipeline transportation services. Further, it engages in import and export of petroleum, natural gas, petroleum products, petrochemical and chemical products, and other commodities and technologies; research, development, and application of technologies and information; hydrogen energy business and related services, such as hydrogen production, storage, transportation, and sales; and battery charging and swapping, solar energy, wind energy and other new energy business and related services. The company was incorporated in 2000 and is headquartered in Beijing, China. China Petroleum & Chemical Corporation is a subsidiary of China Petrochemical Corporation.

Mammoth Energy Services, Inc. operates as an energy services company in the United States, Canada, and internationally. The company operates in four segments: Well Completion Services, Infrastructure Services, Natural Sand Proppant Services, and Drilling Services. The company offers pressure pumping and hydraulic fracturing, sand hauling, and water transfer services; and master services agreements. It also provides a range of services on electric transmission and distribution, and networks and substation facilities, including engineering, design, construction, upgrade, maintenance, and repair of high voltage transmission lines, substations, and lower voltage overhead and underground distribution systems; storm repair and restoration services; and commercial services comprising installation, maintenance, and repair of commercial wiring. In addition, the company mines, processes, and sells natural sand proppant used for hydraulic fracturing; buys processed sand from suppliers on the spot market for resale; and provides logistics solutions to facilitate delivery of frac sand products. Further, it offers contract land and directional drilling services; and rig moving services. Additionally, the company offers aviation services, equipment rental, remote accommodation, and equipment manufacturing services. It serves government-funded, private, public investor-owned, and co-operative utilities; independent oil and natural gas producers; and land-based drilling contractors. The company was formerly known as Mammoth Energy Partners LP and changed its name to Mammoth Energy Services, Inc. in October 2016. Mammoth Energy Services, Inc. was founded in 2014 and is headquartered in Oklahoma City, Oklahoma.