NGL Energy Partners LP operates in the midstream energy sector, focusing on the transportation, storage, and wholesale marketing of crude oil, natural gas liquids (NGLs), refined products, and water solutions. The company serves clients such as oil and gas producers and refiners, primarily in the United States, and manages multiple stages of the supply chain through its vertically integrated model. This integration allows for optimized operations and reliable services, generating revenue from transportation fees, product sales, and water management. NGL Energy Partners aims to be a key player in the midstream energy sector while supporting the oil and gas industry.