Select Energy Services, Inc. is a US-based oilfield services company that provides water management and chemical solutions to the onshore oil and gas industry across three different segments. These include Water Services, Water Infrastructure, and Oilfield Chemicals, which offer various services such as water transfer, flow-back and well testing, fluid hauling, pipeline infrastructure solutions, and the provision of chemicals for hydraulic fracturing and other processes. Founded in 2016, the company is based in Houston, Texas.