About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 64 (1980)

Issue: 12. (December)

First Page: 2108

Last Page: 2117

Title: Evidences of Primary Oil Migration

Author(s): Kinji Magara (2)

Abstract:

Primary hydrocarbon migration, which is defined as movement of hydrocarbons from nonreservoir to reservoir rocks, is believed to be one of the principal mechanisms in the formation of significant petroleum accumulations. Unlike the other important factors involved in petroleum accumulations, such as reservoir, trap, seal, and source rock, which are rock or a form of rock, primary migration is an action most of which occurred in the geologic past. Therefore, it is relatively difficult to prove.

On the basis of the relative concentrations and types of organic matters in shales and reservoirs (sandstones and limestones), and of the availability of water that would have facilitated hydrocarbon migration, primary migration is a necessity in forming significant petroleum accumulations. Statistical and indirect evidence of primary migration is based on the 7,241 sandstone reservoirs in the United States, and geochemical evidence is based on source-rock analyses of shales from different parts of the world. The principal direction of primary migration can be either vertical or horizontal.

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].