Changes

* Structural growth might have allowed [[Migration|migrating]] petroleum to escape to the surface. Once lost, the petroleum is no longer available to fill accumulations to economic size, so overall migration efficiency may decline.

* Structural growth might have allowed [[Migration|migrating]] petroleum to escape to the surface. Once lost, the petroleum is no longer available to fill accumulations to economic size, so overall migration efficiency may decline.

* Areas of structural growth after charging can leak if the seal is fractured during deformation (see [[Leakage]]).

* Areas of structural growth after charging can leak if the seal is fractured during deformation (see [[Leakage]]).

* Areas with hydrodynamic trapping may have problems with variable [[oil quality]] due to [http://www.oiltracers.com/services/exploration-geochemistry/oil-biodegradation.aspx biodegradation] (see [[Petroleum destruction]]).

* Areas with hydrodynamic trapping may have problems with variable [[oil quality]] due to [[biodegradation]] (see [[Petroleum destruction]]).

==See also==

==See also==