Oil & gas companies

Gulfport Energy is an oil and natural gas exploration and production company.

Core Laboratories is a provider of proprietary and patented reservoir description and production enhancement services and products to the oil and gas industry.

Oil States International is a company that provides manufactured products and services to the energy, industrial, and military sectors.

S-OIL (S-Oil(주)) is an oil refining company.

Energen is an oil and gas exploration and production company with headquarters in Birmingham, Alabama. NYSE: EGN

SemGroup is a midstream oil and gas company that moves energy safely through a network of pipelines, terminals and storage tanks.

MOL Group (also known as MOL Hungarian Oil and Gas and MOL Magyar Olaj- és Gázipari Nyilvánosan Működő Részvénytársaság) is an oil and gas company.

Magnolia Oil & Gas is an oil and gas exploration and development company.

Idemitsu Kosan (出光興産株式会社) is a company that owns and operates oil platforms and refineries that produce and sell oil and petroleum products.

British Petroleum (BP) is an energy company that provides carbon products.

CNOOC (China National Offshore Oil Corporation, 中國海洋石油有限公司) is an offshore oil and gas producer.

Seven Generations Energy is a producer of natural gas resources.