Well Integrity Management System (WIMS): Coupled Engineering Analysis

Abstract

Abstract Managing well barriers and maintaining well integrity within limits is challenging for aging wells and has a major effect on extending the life of wells and reducing operational costs. This is important for both the design phase and the operational phase. As more real-time data become available, the efficient use of quality data for analysis has become important. Little has been done to include some of the important engineering analyses in this process. Standard methods and guidelines are traditionally used before or after they occur, but the key to savings and success is avoiding the risks associated with them. If risks are identified early, better solutions can be provided to reduce the associated costs and take remedial action. This paper will present the importance of engineering analyses, such as wellhead movement, trapper-annular pressure buildup, maximum allowable surface pressure, temperature and pressure effects on the integrity, casing wear, corrosion, and erosion significance, as well as zonal isolation and estimation of the tubing or casing safety factor as a quantifiable monitoring system. The presented threshold limits help to compare the actual and average values, either on a single-well or multiple-well basis in an asset. Continuous monitoring helps identify the risk involved with engineering analysis rather than setting simple limits and following the workflow process.