As fields and wells mature, production declines for a variety of reasons. Studies show that there is a 50:50 mix between challenges caused by well integrity and reservoir-related production issues. The word intervention can implicate a drastic measure. We should perhaps think of intervention as proactive maintenance that occurs throughout the life of a field or well. If production targets are being met, then everything is satisfactory, but even in this case, it is likely that production can be optimized. Perhaps if we address a field’s production only when the production figures are significantly impacted, then we are additionally increasing the cost to resolve the issues. To use an analogy, we take our cars to be serviced and maintained regularly. They are expensive assets, and we want them to be as reliable as possible. Checking fluid levels and tire pressures regularly is analogous to monitoring fluid contacts and well pressures to intervene or perform maintenance as necessary.