Optimization of plugging design for well abandonment–Risk management of long-term well integrity

Yvi Le Guen, Olivier Poupard, Matteo Loizzo
2009 Energy Procedia  
A part of MOVECBM EU project is dedicated at evaluating the long -term wellbore integrity on the basis of a risk perspective. This i mplies, among others, to optimize the plugging strategy, in order to mitigate risk associated to CO 2 migration inside the well during the abandonment phase (i.e. post injection). The role of containment of well's components has to be ensured for hundreds o f years, despite degradation mechanisms (i.e. ageing) that affect their properties. To mitigate risk
more » ... tigate risk associated to CO 2 leakages, a probabilistic study was dedicated to casing corrosion in order to support the design of the plugging strategy and its optimization . This was achieved with calculations based on in -situ data and taking into account uncertainties. Results of this study enable to get objective criteria to support the de cision process for efficient plugging design for the MS -3 well (vs. wellbore in tegrity perspective).
doi:10.1016/j.egypro.2009.02.153 fatcat:ljq3hfjwcjc3rpan6b4s5rx7fy