two oil refineries operate in west tulsa. sunoco's tulsa refinery opened in 1913, and is located adjacent to i-244 at the arkansas river. a sale of this refinery to holly corp. of dallas, texas was announced, with a planned closing date of june 1, 2009. the sinclair refinery (built in 1910 by texaco) is located on southwest boulevard. holly corporation of dallas, texas bought both the former texaco refinery and the sunoco refineries in 2009 and announced that it would operate both as a single refinery.