Friends

If an engineer faced a situation to produce an oil well naturally but unfortunatly it was dedicted that the crude contain apercentage of Co2 , my questions are ;
How much is the percentage of Co2 that will not harm down hle equipment ?
and how can we complete the well in case of CO2 regarding tubing,Packer, and X-Mass tree and surface prepration to handle it?

Appreciate your kind advice brothers

BR