As you undoubtedly know, the problems faced by the petroleum industry are events that often lead to a severe drop in the price of crude oil and petrol.  Since the 1970s this market has experienced a number of shocks and setbacks, the first was in 1985/1986, the second in 1997/1998, the third in 2008 with the subprime crisis and the latest in 2020 due to the COVID-19 crisis.