OPINION: Grounded in a spirit of realism rather than euphoria, the recovery in Brazil’s oil sector is gathering strength.

Investments in big pre-salt assets may grab the headlines, but growing interest in assets in mature basins provides an interesting barometer of success.

Buyers of Petrobras assets are gradually learning to navigate rules that, though something of a procedural minefield, were an understandable reaction to the rampant corruption exposed by the Car Wash investigation.