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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Geology (GG)
What is oil migration and dismigration?
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Sajan sarthak
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Oil migration Movement of petroleum from source rock toward a reservoir or seep. Primary migration is expulsion of petroleum from fine-grained source rock, while secondary migration moves petroleum through a coarse-grained carrier bed or fault to a reservoir or seep. Tertiary migration occurs when petroleum moves from one trap to another or to a seep. dimigration is another name of tertiary migration.
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Rahul kumar![best-answer]()
Oil migration- Migration refers to the movement of produced hydrocarbons from source rock to the reservoir rock. Migration are generally of two types; primary migration and secondary migration. Primary migration: Movement of petroleum from fine grained source rocks to the reservoir rocks Secondary migration: Movement of hydrocarbons along the discontinuity present in rocks such as fractures or fault. Oil dismigration- Movement of oil from reservoir rocks to a different place. During dismigration, previously accumulated oil in reservoir rocks move to a different place. As a result of dismigration the quality of reservoir decreases.