Chevron operated deepwater Agbami field offshore Nigeria is in a headlong crash in output.
The field produced 122,000Barrels per day of condensate in 2021, a 15% drop from the 143,307BPD averaged in 2020, according to state sanctioned official figures.
It led the seven Nigerian deepwater producing fields in a collective 50,000BPD decline year on year as indicated in this chart.
First place to look is how good their wells and reservoir management plan is implemented.