An abandoned well is a well that an explorer has plugged and abandoned permanently, because they have technical/wellbore issues, or are no longer economically viable for oil production.The Well abandonment process involves the removal of the tubing and filling of the wellbore with concrete.
Why Abandonment?
The need to seal up a non-viable well or well with technical problems are not farfetched. Abandonment is essential to guard against avoidable interaction between the water and gas zones.