About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 64 (1980)

Issue: 1. (January)

First Page: 107

Last Page: 114

Title: A Process for Primary Migration of Petroleum

Author(s): E. E. Bray, W. R. Foster (2)


Experimental data support a model migration process in which carbon dioxide and hydrocarbon gases are produced in source rocks and are dissolved in pore water concurrently with oil generation. The dissolved gases mobilize the liquid hydrocarbons so that they can leave the source rock with any water expelled during compaction. In noncompacting situations the liquid hydrocarbons can diffuse over reasonable distances from their source rocks into adjacent permeable beds. They later phase-separate by removal of carbon dioxide from the water in or near a reservoir or en route to a reservoir. Removal of carbon dioxide is accomplished by reaction with "carbon dioxide-starved" or unconditioned sedimentary rocks as the oil-bearing water moves up faults and permeable strata, or by e solution due to low pressure at shallow depths.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].