A Practice Note summarizing key Texas laws and regulations governing oil, natural gas, natural gas liquids (NGLs), and petroleum product pipelines, including Railroad Commission of Texas (RRC) regulation of common carrier, common purchaser, and gas utility pipelines, pipeline eminent domain powers, RRC administration of Pipeline and Hazardous Materials Safety Administration (PHMSA) pipeline safety regulations, RRC pipeline weatherization rules, and environmental regulation by the RRC and the Texas Commission on Environmental Quality (TCEQ).