Energy

Oil

Introduction
Oil knowledge
Extraction and uses
The oil system
Non-conventional hydrocarbons

Oil knowledge

Oil fields

After its formation, oil is “wrung out” the mother-rock (compressed by the top layers) at first moving into its micro-fractures (primary migration) and then into the small channels of adjacent permeable rocks (secondary migration). In certain cases the migration is prevented by water-proof rocks. In this case hydrocarbons are trapped and accumulate until the create a field.