Permanent Distributed Fiber Optic Sensors DFOS for Pro-ActiveAbandonment Subsurface Monitoring

摘要

The well decommissioning and abandonment is not only complex, costly, and critical for environment butis also a quickly growing problem for the entire oil and gas industry as the number of wells approachingend of field life is rapidly increasing. All that generates a massive assets management problem. Worse yet,in some of the wells considered as properly abandoned oil leaks are discovered many years later, sometimespolluting the drinking water aquifer or sea water. The well decommissioning procedures require a passivemonitoring tool, helping to identify poor cement jobs and leaks.