[1/2]The logo of PDVSA's U.S. unit Citgo Petroleum is seen at a gas station in Stowell, Texas, U.S., June 12, 2018. REUTERS/Jonathan Bachman/File Photo
HOUSTON, July 21 (Reuters) - A U.S. court set Oct. 23 as the start date for a long-expected auction of shares in Venezuela-owned refiner Citgo Petroleum's parent . . .