Patterson-Uti Energy

Ulterra Drilling Technologies, L.P. is a manufacturer and supplier of polycrystalline diamond (PDC) drill bits and downhole tools for the oil and gas drilling industry, serving both North American and international markets. Founded in 1927 and based in Fort Worth, Texas, Ulterra provides a range of products including steel and matrix PDC bits, as well as specialized tools like the Torkbuster, which addresses torque and stick-slip issues, and the Trugauge, a near-bit stabilizer. The company is noted for its high-quality, high-performance drilling solutions, leveraging the expertise of industry veterans to innovate and respond swiftly to customer needs with the latest technology.

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 founded in 2018, specializing in the development of decentralized geothermal energy systems. The company focuses on providing clean, reliable, and continuous energy solutions for commercial and industrial consumers. By utilizing heat directly extracted from the earth, Criterion Energy Partners aims to deliver sustainable energy sources that minimize environmental impact while enhancing operational efficiency. Its systems are designed to help businesses reduce emissions and improve their overall energy performance, offering a dependable supply of clean power to meet growing energy demands.

Pioneer Energy Services Corp. is a provider of land-based drilling and production services, catering to oil and gas exploration and production companies. Established in 1968 and headquartered in San Antonio, Texas, the company operates a modern fleet that includes 17 AC rigs in the United States and 8 SCR rigs in Colombia. Its services encompass contract land drilling in key regions such as the Marcellus/Utica, Permian Basin, Eagle Ford, Bakken, and internationally in Colombia. Additionally, Pioneer offers well servicing and wireline services, supported by over 100 well-servicing rigs and more than 100 wireline units, which include both cased-hole and open-hole capabilities. The company is recognized for its advanced coiled tubing units and has a commitment to delivering high-performance services in the oil and gas sector.

Superior QC, LLC, founded in 2015 and based in Seabrook, Texas, specializes in developing software for enhancing the accuracy of horizontal wellbore placement during oil and gas exploration. The company's technology includes real-time data analytics for measurement while drilling (MWD) survey data, enabling more precise adjustments to well trajectories. Superior QC offers services such as pre-drill survey planning, passive magnetic ranging, anti-collision monitoring, and post-drilling corrections. These tools help explorers achieve accurate drilling and exploration activities.

Seventy Seven Energy Inc. is a diversified oilfield services company based in Oklahoma City, Oklahoma, that provides a comprehensive range of wellsite services and equipment to land-based exploration and production customers in the United States. The company operates through three primary segments: Drilling, Hydraulic Fracturing, and Oilfield Rentals. The Drilling segment delivers land-based drilling services, while the Hydraulic Fracturing segment specializes in hydraulic fracturing and well stimulation services. The Oilfield Rentals segment offers a variety of rental tools essential for oil and natural gas drilling, including drill pipes, blowout preventers, and environmental containment tools. Additionally, this segment provides air drilling and flowback services, as well as water transfer services for well completions. As of December 31, 2016, Seventy Seven Energy owned a fleet of 91 drilling rigs and 13 hydraulic fracturing fleets. Founded in 2011, the company operates independently and was previously known as Chesapeake Oilfield Operating, L.L.C. It became a subsidiary of Patterson-UTI Energy, Inc. in 2017.

Warrior Rig Technologies specializes in the design, manufacture, and servicing of high-spec rig components and advanced automated pipe handling equipment. The company provides a range of products, including electric and hydraulic top drives, automated tubular tongs, and draw-works. By focusing on safety, reliability, and efficiency, Warrior Rig Technologies aims to support its clients in addressing the challenges of the rig industry with solutions that are both dependable and cost-effective. In addition to manufacturing, the company offers repair and servicing for its equipment, ensuring that clients maintain optimal operational performance.

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.