− | A seal can fail when [[capillary pressure]] exceeds seal entry pressure, open fractures bypass matrix [[pore systems]], [[Natural hydraulic fracturing of top seals|hydrofracturing]] occurs, leakage takes place through micropermeable lithologies, or gas is diffused. The most likely mechanism is controlled by the seal lithology and the geological history. | + | A seal can fail when [[capillary pressure]] exceeds seal entry pressure, open fractures bypass matrix [[pore systems]], [[Natural hydraulic fracturing of top seals|hydrofracturing]] occurs, leakage takes place through micropermeable lithologies, or gas is [[Diffusive seal leakage|diffused]]. The most likely mechanism is controlled by the seal lithology and the geological history. |