ONEOK Partners, L.P. is engaged in gathering, processing, storage and transportation of natural gas in the United States. In addition, the Company owns natural gas liquids (NGL) systems, connecting NGL supply in the Mid-Continent and Rocky Mountain regions. The Company operates in three segments: Natural Gas Gathering and Processing, Natural Gas Liquids and Natural Gas Pipelines. The Company’s Natural Gas Gathering and Processing segment provides nondiscretionary services to producers, which include gathering and processing of natural gas produced from crude oil and natural gas wells. The Company’s Natural Gas Liquids segment owns and operates facilities that gather, fractionate, treat and distribute NGLs and store NGL products in Oklahoma, Kansas, Texas, New Mexico and the Rocky Mountain region. The Company’s Natural Gas Pipelines segment owns and operates regulated natural gas transmission pipelines and natural gas storage facilities.