Williams Partners L.P., formerly Access Midstream Partners, L.P. owns, operates, develops and acquires natural gas, natural gas liquids (NGL) and oil gathering systems. The Company focuses on natural gas and NGL gathering, the first segment of midstream energy infrastructure that connects natural gas and NGLs produced at the wellhead to third-party takeaway pipelines. The Company�s operations are driven by the volumes of natural gas and NGLs that it gather, treat, compress and process across its gathering systems and processing facilities. The Company generates revenue through long-term, fixed-fee natural gas gathering, treating, compression and processing contracts. It owns natural gas pipelines, including Transco, Northwest and Gulfstream. It owns natural-gas supply areas in Marcellus, Utica, Piceance, Four Corners, Wyoming, Eagle Ford, Haynesville, Barnett, Mid-continent and Niobrara. It offers oil and natural gas gathering services in the Deepwater Gulf of Mexico.