Ongoing challenges are caused by incomplete data, deterioration in the integrity, and condition of the construction components.
Side tracking effectively prevents any future re-entry into the original, primary, wellbore.
Aging wells may be required to be shut-in for a number of reasons, but one of the most frustrating can be due to increasing water cut.
It is good practice to have at least two barriers between the hydrocarbon bearing formation and the environment. However, the barriers can often be compromised.
When the logging image shows neither cement, nor creeping formation, the wellbore/annulus must be remediated.