Venezuela’s state oil company is replacing high-level managers at refining complexes and other divisions as it deepens a shake-up that began in January, according to people with knowledge of the situation. Managers at several of Petroleos de Venezuela SA’s major refineries have been replaced in the past weeks, Ivan Freites, a union leader, said Monday in a telephone interview. Widespread staffing changes across PDVSA, as the company is known, were confirmed by another person who works with PDVSA but isn’t authorized to speak about the matter publicly. Officials at the company’s press office and energy ministry declined to comment. The managerial changes come months after Venezuelan President Nicolas Maduro added two board members and installed new executives at PDVSA, including a rear admiral. In January, Maduro gave the job of oil minister — a position that was formerly held by PDVSA President Eulogio Del Pino — to Nelson Martinez, […]