Some interesting comparisons
https://au.finance.yahoo.com/echarts?s=OAS#symbol=OAS;range=5y
https://au.finance.yahoo.com/echarts?s=wll
https://au.finance.yahoo.com/echarts?s=kog
https://au.finance.yahoo.com/echarts?s=clr
https://au.finance.yahoo.com/echarts?s=tplm