James Douglas Graves

NATCO Group, Inc. provides equipment technology for oil & gas production and processing. Its services include construction & maintenance, manufacturing, operating & leasing engineer equipment and training. The company also provides equipment solutions including oil treating, separation, gas conditioning, water quality, measurement systems and automation & controls. NATCO Group was founded in 1926 and is headquartered in Houston, TX.

PSC LLC provides environmental and industrial services. It offers hydroblasting, vacuum services, environmental management, specialty maintenance services and technology solutions. The company was founded in 1977 and is headquartered in Houston, TX.

Core Laboratories NV engages in the provision of proprietary and patented reservoir description, production enhancement, and reservoir management services to the oil and gas industry. It operates through the Reservoir Description segment and Production Enhancement segment. The Reservoir Description segment encompasses the characterization of petroleum reservoir rock, fluid, and gas samples and provides analytical and field services to characterize properties of crude oil and petroleum products. The Production Enhancement segment provides products and services relating to reservoir well completions, perforations, stimulations, and production. The company was founded in 1936 and is headquartered in Amsterdam, the Netherlands.