Patterson-Uti Energy

Ulterra is a provider of premium PDC drill bits and downhole tools for the oil and gas industry. Its strength resides in the experience and wisdom obtained from industry veterans, designing high-quality, high-performance PDC bits for global markets. Its localized focus enables Ulterra to respond quickly to customers' specific applications with the newest technology on the market.

NexTier Oilfield Solutions Inc. is a U.S.-based oilfield services company specializing in well completion and production services across various active basins. The company operates through two primary segments. The Completion Services segment offers hydraulic fracturing, wireline, and pump-down services, aimed at enhancing oil and natural gas production from formations with limited permeability. The Well Construction and Intervention Services segment provides cementing and coiled tubing services, utilizing custom-engineered equipment to ensure accurate annulus isolation and hydraulic sealing, while also offering technical guidance for optimizing well performance. NexTier serves a diverse clientele, including integrated and large independent oil and natural gas exploration and production companies, with a significant presence in West Texas and additional operations in the Northeast, Central, and international regions. Founded in 1973 and headquartered in Houston, Texas, NexTier is committed to delivering effective solutions tailored to the needs of its customers.

Criterion Energy Partners is an independent exploration and production company that develops distributed energy projects to provide clean energy. It was established in 2018.

Superior QC, LLC specializes in software solutions that enhance the accuracy of horizontal wellbore placement during oil and gas exploration. Founded in 2015 and based in Seabrook, Texas, the company offers advanced analytics tools, including its MWD Survey Fault Detection, Isolation, and Recovery service, which processes measurement while drilling survey data in real-time. This technology enables more precise identification of a well's position, allowing for timely adjustments during the drilling process. In addition to real-time analysis, Superior QC provides services such as pre-drill survey planning, passive magnetic ranging, and anti-collision monitoring. These capabilities facilitate more effective exploration activities, ultimately improving the efficiency and success of drilling operations. Superior QC operates as a subsidiary of Patterson-UTI Energy, Inc. as of February 2018.

Seventy Seven Energy Inc. is a diversified oilfield services company based in Oklahoma City, Oklahoma, specializing in a variety of wellsite services and equipment for land-based exploration and production customers across the United States. The company operates through three main segments: Drilling, Hydraulic Fracturing, and Oilfield Rentals. The Drilling segment focuses on land-based drilling services, while the Hydraulic Fracturing segment provides well stimulation services, including hydraulic fracturing. The Oilfield Rentals segment offers a range of rental tools necessary for drilling, completion, and workover activities, such as drill pipes, blowout preventers, and frac tanks. Additionally, this segment provides air drilling and flowback services, as well as water transfer services to well sites. Seventy Seven Energy operates a substantial fleet, which includes numerous drilling rigs and hydraulic fracturing units. Founded in 2011, the company operates independently and is known for its comprehensive service offerings in the competitive U.S. oilfield sector.

Warrior Rig Technologies specializes in the design, manufacturing, and servicing of high-spec rig components and advanced pipe handling equipment. The company provides a range of products, including electric and hydraulic top drives, automated tubular tongs, and draw-works. In addition to manufacturing these components, Warrior Rig Technologies offers repair and servicing solutions, ensuring that clients have access to reliable and efficient rig equipment. By focusing on safety and cost-effectiveness, the company aims to help its clients overcome the challenges of the oil and gas industry.

TMBR/ Sharp Drilling is a privately held company engages in the domestic onshore contract drilling of oil and gas wells.

Jones Drilling is a privately owned company engages in manufacturing and distribution of well drilling services.

High Valley Drilling is a privately held drilling company engaged in drilling services.

Wek Drilling is a privately held drilling company that provides drilling services.

Ambar is a privately held company markets, blends and designs certain fluids and chemicals.

Norton Drilling Services is a privately held company operates oil and gas drilling rigs and provides contract drilling services.

Tejas Drilling Fluids is a privately held company that engages in oil field drilling fluids.

Lone Star Mud is a privately held company that produces oil field drilling fluids.