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Cypress Environmental Partners, L.P. provides independent inspection, integrity, and support services in North America. The company operates in three segments: Inspection Services, Pipeline & Process Services (PPS), and Environmental Services. The Inspection Services segment offers inspection and integrity services on various infrastructure assets, including midstream pipelines, gathering systems, and distribution systems. This segment also provides various services, such as nondestructive examination, in-line inspection support, pig tracking, survey, data gathering, and supervision of third-party contractors. The PPS segment offers hydrostatic testing, chemical cleaning, water transfer and recycling, pumping, pigging, flushing, filling, dehydration, caliper runs, in-line inspection tool run support, nitrogen purging, and drying services, as well as test documentation and records retention services. The Environmental Services segment owns and operates 9 water treatment facilities with ten environmental protection agency class II injection wells in the Bakken shale region of the Williston Basin in North Dakota. This segment offers treatment, recovery, separation, and disposal of waste byproducts generated during the lifecycle of an oil and natural gas well to protect the environment and drinking water. The company serves owners and operators of pipelines and other infrastructure, public utility or local distribution, pipeline construction, oil and natural gas exploration and production, and trucking companies, as well as third-party purchasers of residual oil. Cypress Environmental Partners GP, LLC operates as the general partner of the company. The company was formerly known as Cypress Energy Partners, L.P. and changed its name to Cypress Environmental Partners, L.P. in March 2020. Cypress Environmental Partners, L.P. was founded in 2003 and is headquartered in Tulsa, Oklahoma.

Natural Gas Services Group, Inc. provides natural gas compression equipment and services to the energy industry in the United States. It engineers and fabricates, operates, rents, and maintains natural gas compressors for oil and natural gas production and plant facilities. It also designs, fabricates, and assembles compressor units for rental or sale; and designs, manufactures, and sells a line of reciprocating natural gas compressor frames, cylinders, and parts. In addition, the company offers flare stacks and related ignition and control devices for the onshore and offshore incineration of gas compounds, such as hydrogen sulfide, carbon dioxide, natural gas, and liquefied petroleum gases. Further, it provides aftermarket services for its compressor and flare sales business; and exchange and rebuild program for small horsepower screw compressors. It markets its products to exploration and production companies that utilize compressor units for artificial lift applications; and oil and natural gas exploration and production companies. Natural Gas Services Group, Inc. was incorporated in 1998 and is headquartered in Midland, Texas.

Ranger Energy Services, Inc. provides onshore high specification well service rigs, wireline services, and complementary services to exploration and production companies in the United States. It operates through three segments: High Specification Rigs, Wireline Services, and Processing Solutions and Ancillary Services. The High Specification Rigs segment offers well service rigs and complementary equipment and services to facilitate operations throughout the lifecycle of a well; and well maintenance services. This segment also has a fleet of 402 well service rigs. The Wireline Services segment provides wireline production and intervention services to provide information to identify and resolve well production problems through cased hole logging, perforating, mechanical, and pipe recovery services; wireline completion services that are used primarily for pump down perforating operations to create perforations or entry holes through the production casing; and pumping services. This segment also has a fleet of 66 wireline units and 29 high-pressure pump trucks. The Processing Solutions and Ancillary Services segment rents well service-related equipment consisting of fluid pumps, power swivels, well control packages, hydraulic catwalks, frac tanks, pipe racks, and pipe handling tools; and coiled tubing, decommissioning, and snubbing services, as well as provides proprietary and modular equipment for the processing of natural gas streams. This segment also engages in the rental, installation, commissioning, start up, operation, and maintenance of mechanical refrigeration units, nitrogen gas liquid stabilizer units, nitrogen gas liquid storage units, and related equipment. Ranger Energy Services, Inc. was incorporated in 2017 and is headquartered in Houston, Texas.

Superior Energy Services, Inc. engages in the provision of oilfield services and equipment. It operates through the following segments: Drilling Products & Services, Onshore Completion & Workover Services, Production Services and Technical Solutions. The Drilling Products and Services segment provides downhole drilling tools and surface rentals. The Onshore Completion and Workover Services segment offers pressure pumping, fluid management and workover services. The Production Services segment gives intervention services. The Technical Solutions segment involves in the products and services that address customer-specific needs with applications, which typically require engineering, manufacturing or project planning. The company was founded by Terence E. Hall in 1989 and is headquartered in Houston, TX.

Mammoth Energy Services, Inc. operates as an energy services company in the United States, Canada, and internationally. The company operates in four segments: Well Completion Services, Infrastructure Services, Natural Sand Proppant Services, and Drilling Services. The company offers pressure pumping and hydraulic fracturing, sand hauling, and water transfer services; and master services agreements. It also provides a range of services on electric transmission and distribution, and networks and substation facilities, including engineering, design, construction, upgrade, maintenance, and repair of high voltage transmission lines, substations, and lower voltage overhead and underground distribution systems; storm repair and restoration services; and commercial services comprising installation, maintenance, and repair of commercial wiring. In addition, the company mines, processes, and sells natural sand proppant used for hydraulic fracturing; buys processed sand from suppliers on the spot market for resale; and provides logistics solutions to facilitate delivery of frac sand products. Further, it offers contract land and directional drilling services; and rig moving services. Additionally, the company offers aviation services, equipment rental, remote accommodation, and equipment manufacturing services. It serves government-funded, private, public investor-owned, and co-operative utilities; independent oil and natural gas producers; and land-based drilling contractors. The company was formerly known as Mammoth Energy Partners LP and changed its name to Mammoth Energy Services, Inc. in October 2016. Mammoth Energy Services, Inc. was founded in 2014 and is headquartered in Oklahoma City, Oklahoma.