World Top 100 Oil and Gas Companies List by Market Cap as of August 2026

Athabasca Oil Corporation ("AOC") is a liquids-weighted intermediate producer involved in the development of Canada's most active resource plays (Montney, Duvernay, Oil Sands).

Company strategy is intended to ensure both Light Oil and Thermal Oil are financially robust and competitive, with exceptional future growth opportunities.

Crestwood Equity Partners LP is a publicly traded master limited partnership that owns and operates midstream assets company. It operations and financial results are divided into three segments that include gathering and processing, storage and transportation and marketing, supply and logistics. The headquarters is in USA.

Energy Transfer LP has acquired Crestwood Equity Partners LP in an all-equity transaction valued at approximately $7.1 billion, including the assumption of $3.3 billion of debt in 2023.

Its main businesses are LNG, LPG etc. covering the whole industry chain, including international procurement, ocean transportation, terminal storage, logistics and distribution, and terminal services. Headquarters is in China.

National Energy Services Reunited is a National Oilfield Services company. It is having over 5,000 employees representing more than 60 nationalities in over 16 countries. The company annual revenue is 199 million USD, annual net income is 11 million USD and 4,000 employees as on 2019. The headquarters is in USA.

Sinopec Shanghai Petrochemical Company is a Refining Chemical integrated Petrochemical company. It is the most important domestic producers of refined oil products, intermediate petrochemicals, synthetic resins and synthetic fibers. Petrochemicals such as ethylene, propylene, butadiene, benzene, toluene, paraxylene, PTA, acrylonitrile, ethylene glycol, ethylene oxide, C5 fraction, acetic acid and vinyl acetate etc. Headquarters is in China.

Liberty Oilfield Services is a Innovative Service company providing stimulation services to optimize well production. It focus on offering safe, efficient and high quality hydraulic fracturing and engineering services, aiming to become the vendor of choice. The headquarters is in USA.