Long Term Annular Sealing of CO2 Injection and Storage Wells Using Shale Barriers
E. van Oort,
A. Lucas,
J. Kverneland
et al.
Abstract:As part of the energy transition and the aim to reduce greenhouse gas (GHG) emissions, more carbon in the form of CO2 will be captured and stored underground in wells intersecting suitable reservoirs for storage. The long-term integrity of such wells is a considerable concern, given that CO2 is a fluid that reacts with Portland cement and steel, which can erode well barriers over time. Moreover, low temperatures and temperature cycling in injection and storage wells can lead to cement cracking and debonding fr… Show more
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