Changes

==Duration of hydrodynamic regimes==

==Duration of hydrodynamic regimes==

[[file:predicting-preservation-and-destruction-of-accumulations_fig11-3.png|thumb|{{figure number|1}}Effects of hydrodynamics on trapping.]]

[[file:predicting-preservation-and-destruction-of-accumulations_fig11-3.png|300px|thumb|{{figure number|1}}Effects of hydrodynamics on trapping.]]

Petroleum distribution adjusts to trapping hydrodynamics much faster than changes in natural hydrodynamic regimes.<ref name=ch11r15>Hubbert, M., K., 1953, [http://archives.datapages.com/data/bulletns/1953-56/data/pg/0037/0008/1950/1954.htm Entrapment of petroleum under hydrodynamic conditions]: AAPG Bulletin, vol. 37, p. 1954–2026.</ref> In general, hydrodynamic regimes, especially those established by elevation–head differences in recharge, are time-transient events that are much shorter than the theoretical lifetime of accumulations under hydrostatic conditions. If present hydrodynamic flow affects [[fluid contacts]] of reservoirs charged in the past, then spillage and tertiary migration probably have occurred.

Petroleum distribution adjusts to trapping hydrodynamics much faster than changes in natural hydrodynamic regimes.<ref name=ch11r15>Hubbert, M., K., 1953, [http://archives.datapages.com/data/bulletns/1953-56/data/pg/0037/0008/1950/1954.htm Entrapment of petroleum under hydrodynamic conditions]: AAPG Bulletin, vol. 37, p. 1954–2026.</ref> In general, hydrodynamic regimes, especially those established by elevation–head differences in recharge, are time-transient events that are much shorter than the theoretical lifetime of accumulations under hydrostatic conditions. If present hydrodynamic flow affects [[fluid contacts]] of reservoirs charged in the past, then spillage and tertiary migration probably have occurred.