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Core Laboratories Inc. provides reservoir description and production enhancement services and products to the oil and gas industry in the United States, and internationally. It operates through Reservoir Description and Production Enhancement segments. The Reservoir Description segment includes the characterization of petroleum reservoir rock and reservoir fluid samples to enhance production and improve recovery of crude oil and gas from its clients' reservoirs. It offers laboratory-based analytical and field services to characterize properties of crude oil and oil delivered products; and proprietary and joint industry studies, as well as services that support carbon capture, utilization and storage, geothermal projects, and the evaluation and appraisal of mining activities. The Production Enhancement segment provides services and products relating to reservoir well completions, perforations, stimulations, production, and well abandonment. It offers integrated diagnostic services to evaluate and monitor the effectiveness of well completions and to develop solutions to improve the effectiveness of enhanced oil recovery projects. The company markets and sells its products through a combination of sales representatives, technical seminars, trade shows, and print advertising, as well as through distributors. Core Laboratories Inc. was founded in 1936 and is based in Houston, Texas.

Oceaneering International, Inc. provides engineered services and products, and robotic solutions to the offshore energy, defense, aerospace, manufacturing, and entertainment industries worldwide. It operates through Subsea Robotics, Manufactured Products, Offshore Projects Group, Integrity Management & Digital Solutions, and Aerospace and Defense Technologies segments. The company offers remotely operated vehicles (ROVs) for drill support and vessel-based services, including subsea hardware installation, construction, pipeline inspection, survey and facilities inspection, maintenance, and repair; ROV tooling; and survey services, such as hydrographic survey, positioning services, and autonomous underwater vehicles for geoscience. It also provides distribution and connection systems, including production control umbilicals and field development hardware, pipeline connection, and repair systems to the energy industry; and autonomous mobile robotic technology and entertainment systems to various industries. In addition, the company offers subsea installation and intervention, including riserless light well intervention inspection, maintenance, and repair services; installation and workover control systems, and ROV workover control systems; diving services; project management and engineering; and drill pipe riser services and systems, and wellhead load relief solutions. Further, it provides asset integrity management, software and analytical solutions for the bulk cargo maritime industry, and software, digital, and connectivity solutions for the energy industry, as well as government services and products, including engineering and related manufacturing in defense and space exploration activities to the United States' government agencies and their prime contractors. Oceaneering International, Inc. was founded in 1964 and is headquartered in Houston, Texas.

ProPetro Holding Corp. operates as an integrated oilfield services company. The company provides hydraulic fracturing, wireline, cementing, and other complementary oilfield completion services to upstream oil and gas companies in the Permian Basin. ProPetro Holding Corp. was founded in 2007 and is headquartered in Midland, Texas.

Select Water Solutions, Inc., together with its subsidiaries, provides water management and chemical solutions to the energy industry in the United States. The company operates through three segments: Water Services, Water Infrastructure, and Chemical Technologies. The Water Services segment provides water-related services, including water sourcing, water transfer, flowback and well testing, water containment, fluids hauling, water monitoring, and water network automation; technology solutions comprising hydrographic mapping, water volume and quality monitoring, remote pit and tank monitoring, leak detection, asset and fuel tracking, and automated-equipment services, as well as various surface rental equipment and workforce accommodation services. The Water Infrastructure segment engages in the recycling, gathering, transferring, and disposal of water through a network of permanent pipeline infrastructure, semi-permanent pipeline infrastructure, water recycling facilities, earthen pits, water sources, and SWDs; provides solids management services; and develops, builds, and operates semi-permanent and permanent infrastructure solutions. The Chemical Technologies segment provides technical solutions, products, and services related to chemical applications in the oil and gas industry. This segment develops, manufactures, and manages logistics; and provides chemicals used in hydraulic fracturing, stimulation, cementing, and well completions for pressure pumpers and oil and gas producers, as well as offers production chemical solutions for underperforming wells, corrosion and scale monitoring, chemical inventory management, well failure analysis, and lab services. It primarily serves oil and gas producers. The company was formerly known as Select Energy Services, Inc. and changed its name to Select Water Solutions, Inc. in May 2023. Select Water Solutions, Inc. was incorporated in 2016 and is headquartered in Houston, Texas.

Expro Group Holdings N.V. engages in the provision of energy services in North and Latin America, Europe and Sub-Saharan Africa, the Middle East and North Africa, and the Asia-Pacific. The company provides well construction services, such as technology solutions in drilling, tubular running services, and cementing and tubulars; and well management services, including well flow management, subsea well access, and well intervention and integrity solutions. It serves exploration and production companies in onshore and offshore environments in approximately 60 countries. Expro Group Holdings N.V. was founded in 1938 and is based in Houston, Texas.