The change to the name "Sunray" came because Sunray Oil Company (later Sunoco) set up a gas-oil refinery near the town on of land originally donated by Mr. Collins to Dana Oil & Gas Royalty Company. Sunray Oil Company bought the holdings of Dana in the early Jones Field in northeast Moore County, which was near the new town. The townsite location was determined by a new Rock Island Railroad route running from Dalhart to Morse along the northern edge of Mr. Collins's townsite survey. At the time, the town was from the Jones Well and from the Morton oil well—both early oil-gas discoveries in Moore County.