Plains All American Pipeline LP engages in the operation of midstream energy infrastructure and provides logistics services for crude oil, natural gas liquids, and natural gas. It operates through the Crude Oil and Natural Gas Liquids (NGL) segments. The Crude Oil segment refers to the pipeline transportation, terminalling, storage, and gathering assets. The NGL segment produces basins and transportation corridors. The company was founded by Greg L. Armstrong in 1998 and is headquartered in Houston, TX.