Daybreak Oil & Gas: Onshore crude oil and natural gas exploration, development, and production specialist.

Texas-based oil and gas production company, backed by Denham Capital, specializing in exploration.

Jonah Energy: An oil & energy company specializing in natural oil and gas production.

Found Resources: An independent, oil-focused exploration and production company based in Utah.

Vermilion Cliffs Partners: An exploration company providing oil, gas production and midstream services.

Evolution Petroleum: A Texas-based oil and gas producer, enhancing production with specialized technology.

Magnolia Oil & Gas: Independent oil producer with assets in South Texas' Eagle Ford Shale.

Startup specializing in leasing and production, successfully financed and operational since Q1 2016.

WildFire Energy: A US-based independent energy firm specializing in oil and gas production, backed by Warburg Pincus and Kayne Funds.

Bravo Natural Resources, LLC: A North American exploration and production company specializing in onshore basins.

Slate River Resources, LLC: Exploration and production services for the oil and gas industry in Colorado.

EGPI Firecreek, Inc.: Global provider of oil production solutions, specializing in field acquisition and rehabilitation.

TerraFina Energy: A women-led firm enhancing oil well productivity in South Texas.

Petroteq Energy: Pioneering eco-friendly oil processing and extraction technologies.

Avalon Exploration: Dallas-based oil and gas extraction company, specializing in heavy oil production.

ESal: Pioneering reservoir wettability optimization for enhanced oil and water production.

Crescent Point Energy Corp.: A Calgary-based mining company, specializing in North American light oil production.

Texas Gulf Energy: Integrated energy services, oil/gas production, project management, and consulting for global industries.

Hugot Royalty Trust: An oil and gas production company owning profitable properties.

Poplar Resources: Independent oil & gas company, enhancing value via production & exploration at Poplar Dome.

Topaz Resources Inc., a Texas-based energy company, focuses on oil and gas production, acquisitions, and drilling.

PrimeEnergy Resources: A leading producer of crude oil and natural gas, offering drilling services across the US.

Impact Exploration & Production: Acquiring and developing oil-focused properties in the US Rocky Mountain region.

Nadel and Gussman, LLC: A leading oil and gas production company established in 2000.

Double Eagle Energy Permian LLC: A US-based exploration and production company specializing in oil and gas.