In the view of Exceopetrol, intelligent oilfield evolved from digital oilfield, which is an evolution from quantitative change to qualitative change. The core of digital oilfield is digitalization and intellectualization, focusing more on data collection, while intelligent oilfield is based on digital oilfield, integrating human intelligence, emphasizing the combination of artificial intelligence and human intelligence, focusing more on data collation and excavation, forming the transformation from "data" to "knowledge", thus to oilfield production. Decision-making is assisted by guidance.