The maximum column of hydrocarbons that can accumulate under a [[seal]] occurs when the [[Buoyant pressure|buoyancy pressure]],''P''<sub>b</sub>, equals the [[displacement pressure]], ''P''<sub>d</sub>. If ''P''<sub>b</sub> exceeds ''P''<sub>d</sub>, the hydrocarbons will leak through the seal. If ''P''<sub>b</sub> is less than ''P''<sub>d</sub>, it would be possible to seal a greater column of hydrocarbons.
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The maximum [[Hydrocarbon column|column of hydrocarbons]] that can accumulate under a [[seal]] occurs when the [[Buoyant pressure|buoyancy pressure]],''P''<sub>b</sub>, equals the [[displacement pressure]], ''P''<sub>d</sub>. If ''P''<sub>b</sub> exceeds ''P''<sub>d</sub>, the hydrocarbons will leak through the seal. If ''P''<sub>b</sub> is less than ''P''<sub>d</sub>, it would be possible to seal a greater column of hydrocarbons.