Domestic US investment, overwhelmingly shale, remains the key focus for US majors Exxon, Chevron and ConocoPhillips as they set out their 2020 results over the past week.

US activity continues to recover from the nadir hit in Q2 and Q3 last year. But ‘maintenance spending’ remains the watchword: as yet there is no sign of sufficient investment to sustainably grow output. (CONTINUED - 1075 WORDS)