First, looking at the relationship between supply and demand of international oil prices, supply depends on the proportion of the world's major crude oil production for the decline of oil prices.
Second, looking at the US dollar index, crude oil is denominated in US dollars. The rebound of the US dollar index means that the cost ratio of investors investing in crude oil is higher than that of the appreciation of the US dollar.
Third, the demand for crude oil is increased in season and summer, and the demand for heating in winter is increased, which is good for oil prices.