Oil & gas companies

Tullow Oil is a multinational oil and gas exploration company.

Spark Energy is a retail electricity and natural gas supplier in deregulated energy markets.

Ranger Oil (formerly known as Penn Virginia) is an independent oil and gas company engaged in the exploration, development and production of oil, NGLs and natural gas in various domestic onshore regions of the United States, with a primary focus in the Eagle Ford Shale in South Texas.

Houston American Energy Corp. (HUSA) is an oil and gas exploration and production company.

Management Resource Solutions supplies technical and strategic services in the oi land gas, aviation, construction and resources Industries.

Likhitha Infrastructure is a provider of oil and gas pipeline infrastructure construction and development services.

Deutsche Rohstoff identifies, develops and divests attractive resource projects in North America, Australia and Europe. The focus is on the development of oil and gas opportunities within the United States. Metals, such as gold, copper, rare earth elements, tungsten and tin complete our portfolio.

Resolute Energy Corporation is an independent oil and gas company.

United Strength Power Holdings is an investment holding company that operates gas and petroleum businesses.

Vantage Drilling International is an offshore drilling contractor.

Canacol Energy is an energy company.

EXCO Resources is a natural gas and oil company engaged in the exploration, exploitation, acquisition, development and production.