Sanchez Midstream Partners LP engages in the acquisition, development, ownership, and operation of midstream and other energy-related assets in the United States. It operates in two segments, Midstream and Production. The Midstream segment engages in gathering, processing, and transporting natural gas, NGLs, and oil. This segment owns an oil and natural gas gathering system with approximately 150 miles of gathering pipelines, as well as 4 gathering and processing facilities, including stabilizers, storage tanks, compressors and dehydration units, and other related assets in Western Catarina, which are located in Dimmit and Webb Counties, Texas; and provides upstream production services from the Eagle Ford Shale in South Texas. The Production segment is involved in the production of crude oil and natural gas. As of December 31, 2018, this segment had total estimated proved reserves of approximately 3.5 million barrels of oil equivalent. The company also owns production assets in Texas, Louisiana, and Oklahoma. Sanchez Midstream Partners GP LLC serves as the general partner of the company. The company was formerly known as Sanchez Production Partners LP and changed its name to Sanchez Midstream Partners LP in June 2017. Sanchez Midstream Partners LP was founded in 2005 and is headquartered in Houston, Texas.