 Shell PLC LSE:SHEL, NYSE:SHEL, EURONEXT:SHELL will turn over most of its burgeoning profits to a bulked up its share buy-back programme which will now seek to repurchase some US8.5bn in the first half of 2022. The oil major reported US6.4bn of earnings adjusted EBITDA or the fourth quarter whilst cash flow excluding working capital amounted to some US55bn over 2021, after raking in US11.1bn in Q4. 