Darrell Johnson

Seven Energy engages in gas development and production. The company is headquartered in Port Louis, Mauritius.

RocketFrac Services Ltd. engages in the provision of oil field technology solutions. It develops solid rocket propellant with a down hole tool to generate targeted high pressures and induce stress waves to fracture rock. The company is headquartered in Calgary, Canada.

Weatherford International Ltd. provides equipment and services to the oil and natural gas exploration and production industry. The company was founded in 1972 and is headquartered in Geneva, Switzerland.

Part of RPX Corp., Ensco, Inc. is a company that combines railway track maintenance planning experts and cutting-edge rail software to provide services and software products for science-driven track maintenance and capital improvement plans. The company is based in El Dorado, AR. The company also offers Ensco EVTOL, advanced air mobility (AAM), and urban air mobility (UAM) certification services to eliminate airworthiness safety and security hurdles to accelerate product deliveries. Ensco provides engineering, science, and advanced technology solutions to the aerospace, national security, rail, and cybersecurity industries.