A Well Integrity incident and breach of Well integrity envelope has the potential to escalate into catastrophic events. The event can result in harm to people, damage to Assets and the environment, and to the reputation of the Operator. It can easily be either of them or in case of a major event, all of the above. Financial impact can be very high; loss of revenue of the hydrocarbons that escape, damage to the reservoir as a result of the uncontrolled fl ow and
collateral damages has the potential to bring an Operator in financial dire straits.

Several incidents in the recent past have shown that even the largest Operator can barely manage such financial drain. It is therefore of critical importance that the well integrity envelope is properly designed, constructed and maintained during it life cycle: Sustained Well Integrity
Management (WIM).

This Master Class combines several engineering disciplines involved in the design, construction, operation and maintenance of wells and their interaction on assuring well integrity.

It illustrates the large extend in the organization and its effects on well integrity. It aims to enable common understanding of the often-confl icting targets within the disciplines in achieving this. It touches on Failure Mode and Effect Analyses (FMEA), barrier testing and record keeping. The knowledge and skills to make critical decision throughout well life cycle is vital, not only for WIM purpose as well as for economic value. Focus is on the Well Integrity management systems and interfaces with other teams in the organization. Integrity barriers are defi ned, Well Failure Model and how to establish one is discussed as well how to create an effi cient well integrity organization. The ultimate objective is to optimize productivity at lowest unit operating cost
and to maintain mechanical integrity throughout well life cycle.