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Hydrocarbon expulsion, migration, and accumulation (view source)
Revision as of 22:42, 10 March 2014
, 22:42, 10 March 2014→Migration
==Migration==
==Migration==
[[file:predicting-reservoir-system-quality-and-performance_fig9-14.png|thumb|{{figure number|1}}After .<ref name=ch09r6>Berg, R., 1975, [http://archives.datapages.com/data/bulletns/1974-76/data/pg/0059/0006/0900/0939.htm Capillary pressures in stratigraphic traps]: AAPG Bulletin, vol. 59, no. 6, p. 939–956.</ref>]]
[[file:predicting-reservoir-system-quality-and-performance_fig9-14.png|thumb|{{figure number|1}}After <ref name=ch09r6>Berg, R., 1975, [http://archives.datapages.com/data/bulletns/1974-76/data/pg/0059/0006/0900/0939.htm Capillary pressures in stratigraphic traps]: AAPG Bulletin, vol. 59, no. 6, p. 939–956.</ref>.]]
Hydrocarbon migrates through an aquifer when it is “buoyed” upward due to AP caused by the density differential of the hydrocarbons and the formation water. The oil or gas migrates in filaments through the pore system of the aquifer as long as the [[buoyancy pressure]] (P<sub>b</sub>) exceeds the capillary resistance of the water in the pore throats. This relationship is illustrated in the diagram below.
Hydrocarbon migrates through an aquifer when it is “buoyed” upward due to AP caused by the density differential of the hydrocarbons and the formation water. The oil or gas migrates in filaments through the pore system of the aquifer as long as the [[buoyancy pressure]] (P<sub>b</sub>) exceeds the capillary resistance of the water in the pore throats. This relationship is illustrated in the diagram below.