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Wellbore integrity is considered an important risk factor for leakage of CO2 and formation fluids out of geological CO2 storage sites. Quantifying the effective hydraulic parameters that control vertical migration of fluids along the wellbore involves data collection through numerous field and laboratory experiments. The vertical interference test (VIT) is a downhole test designed to measure hydraulic...
An important aspect of the risk associated with geological carbon dioxide sequestration is the integrity of existing wellbores that penetrate geological layers targeted for CO 2 injection. CO 2 leakage may occur through multiple pathways along a wellbore within the “disturbed zone” surrounding the well casing. The disturbed zone is defined as the annular region along the exterior of...
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