Sorry for the confusion, but I am not sooo much into cryptocurrencies. ^^

Definitly, improving the cashflow is one of the most important thing, when the oil-price is down and the public life to. Selling their oil to such low prices would not be intellegent, so they rented tankships to store their produced oil. Meanwhile the oil-price stabilized since march and they sold more oil.
I am very excited about how shell wants to cut their debts in the futrure, while they want to invest in green energy too.
Thank you for your opinion @hardaeborla :)