Drilling companies

YG-1 manufactures and sells cutting tools.

Tesco Corporation is a provider of technology-based solutions for drilling, servicing and completion of wells for the upstream energy industry.

Range Resources Corporation (NYSE: RRC) is an independent natural gas exploration and production company. Recognized as the pioneer of the Marcellus Shale.

Nabors Industries is a company that owns and operates land-based drilling rig fleets and offers offshore platform rigs.

PDC Energy is an independent exploration and production company, acquiring, exploring for, developing and producing crude oil, natural gas and natural gas liquids.

Zhongman Petroleum and Gas Group (ZPEC, 中曼石油天然气集团股份有限公司) is an oil and gas exploration and development company.

Newfield is an independent crude oil and natural gas exploration and production company.

Golden Independence Mining is a mining company that acquires and operates mineral deposit properties.

Odfjell Drilling operates as an integrated offshore drilling and oil service company.

Archer is an oilfield service company, which provides various oilfield products and services to the oil and gas industry.

Odfjell Technology is a company that provides offshore operations, well services technology, and engineering solutions to the oil and gas industry.

Schoeller-Bleckmann Oilfield Equipment (SBO) is a provider of products and solutions for the oil and gas industry.