Carel Willem Jan Hoyer

Precision Energy Services provides oil-drilling services. It also provides wire line logging and completion services, fracturing and well stimulation, polycrystalline diamond compact drill bits, mechanical services and well abandonment services. The company is located 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.

QSolar Ltd. engages in developing of proprietary trade solar processes and technologies, through its subsidiaries. It also involves in manufacturing and selling of solar products. The company was founded by Andreas Tapakoudes on September 2, 1999 and is headquartered in Calgary, Canada.

Deep Casing Tools Ltd. designs and manufactures advanced casing and completion tools for the oil and gas and geothermal industries. It offers Turbocaser Express, Turborunner, Shalerunner, and Turbocaser Deepwater services. The company was founded by Derek Frederick Herrera in 2008 and is headquartered in Aberdeen, the United Kingdom.

Nowsco Well Service Ltd. provides products and equipment to the oil and gas industry. Its services include pipelines and plant commissioning. The company has offices in Canada, United States, United Kingdom, Europe, North Africa, Middle East, Asia, Russia and Argentina. Nowsco Well Service was founded in 1962 and is headquartered in Calgary, Canada.

Ziebel AS develops fiber optic intervention technology. It designs and manufactures wireless real time permanent gauges for oilfield applications. The firm offers artificial lift solutions such as umbilical wire replaceable electrical down hole pumps and industrial solutions, including torque loggers, controllers, pressure test systems and custom industrial systems. The company was founded by Henning Hansen and David Stanly Ottesen on January 2, 2006 and is headquartered in Tananger, Norway.

Sekal AS offers software for managing the rig drilling process. The firm’s products include drillscene, drilltronic and drilling engineering services. The company was founded in 2011 and is headquartered in Sandnes, Norway.