In Jereh’s point of view, the smart oilfield evolves from the digital oilfield, which is a process from quantitative change to qualitative change. Core of the digital oilfield is digitization and intelligentization which focus more on data collection. However, the smart oilfield inheriting digital oilfield and integrating human intelligence emphasizes the combination of artificial intelligence and human intelligence and focuses more on data management and development to convert data to knowledge so as to offer assistance and guidance to oilfield production strategy.