Well integrity is the implementation of technical, operational and organizational solutions to reduce the risk of uncontrolled life cycle of an oil and gas well and create optimum operational conditions. Some of the influences in doing this are the condition of the well, environmental conditions, and the condition of well-designed equipment. At the time of drilling, the drilling target is attempted to achieve both the trajectory, time, cost and avoidance of fatal losses due to drilling obstacles that cannot be anticipated properly such as kicks that are not handled so that blow outs occur. In the production aspect, this evaluation is carried out from the condition of the well construction, the condition of the artificial lift, the condition of the reservoir and its production capability. Other aspects of the operation failure that occurred. This understanding begins with an analysis of well construction, critical pressure and temperature and threshold conditions that cause well damage and how to anticipate the failure of a production operation in an oil well.