1. GE took a $22B impairment in 2018.
2. Shell took a $22B write down in 2020.
3. ConocoPhillips incurred a $34B impairment in 2009.
1. GE took a $22B impairment in 2018.
2. Shell took a $22B write down in 2020.
3. ConocoPhillips incurred a $34B impairment in 2009.