The Phillips 66 Company is an American multinational energy company headquartered in Westchase, Houston, Texas. Its name, dating back to 1927 as a trademark of the Phillips Petroleum Company, helped ground the newly reconfigured Phillips 66. The company today was formed ten years after Phillips merged with Conoco to form ConocoPhillips. The merged company spun off its refining, chemical, and retail assets into a new company bearing the Phillips name. It began trading on the New York Stock Exchange on May 1, 2012, under the ticker PSX.

Westchase is a business district and neighborhood in western Houston, Texas, bounded by Westheimer Road on the north, Gessner Road on the east, Houston Center Boulevard on the west, and Westpark Tollway on the south. The area is bisected by Beltway 8. Westchase is adjacent to Greater Sharpstown, the International District, and the Royal Oaks Country Club subdivision. The area is immediately northeast of Alief.