The process where asphaltenes precipitate from crude oil. Laboratory or refinery deasphalting is achieved by adding light hydrocarbons, such as pentane or hexane, to the oil. A similar process can occur in nature when methane and other light hydrocarbons that escape from deep reservoirs enter a shallower oil reservoir.
- Peters, Kenneth E., David J. Curry, and Marek Kacewicz, 2012, An overview of basin and petroleum system modeling: Definitions and concepts, in Peters, Kenneth E., David J. Curry, and Marek Kacewicz, eds., Basin modeling: New horizons in research and applications: AAPG Hedberg Series no. 4, p. 1-16.