Petrobras, the state-controlled company best-known for its success in finding and developing huge oilfields Brazil's prolific pre-salt province, is rediscovering its charitable side after several years of reduced spending on social responsibility.

Once known for its lavish sponsoring of cultural events, sport competitions and social development projects, this aspect of its spending was cut back sharply when the Car Wash corruption scandal exposed poor governance and left the company in heavy debt.

Governance initiatives and debt-deleveraging have helped turn things around for Petrobras and this week the Brazilian oil giant was opening its wallet to support a different type of initiative.