Skip to Main Content
Book Chapter

Chapter 14: Hydrocarbon Trap Classification Based on Associated Gas Chimneys

By
Roar Heggland
Roar Heggland
Statoil ASA, Stavanger, Norway. E-mail: rohe@statoil.com
Search for other works by this author on:
Published:
January 01, 2013

Abstract

Oil seeps, shallow gas, and surface features such as seabed pockmarks and mud volcanoes are historically believed to be signs of deeper hydrocarbon accumulations. In the search for connections between shallow features and deeper hydrocarbon accumulations, gas chimneys and faults have been studied as possible routes for vertical migration of gas and fluids from source rocks and hydrocarbon-charged traps. Understanding these fluid migration pathways can help evaluate whether a trap is charged or has leaked. A method based on seismic attributes and use of neural networks has been developed to detect and display gas chimneys. This method makes it possible to detect and map gas chimneys in a consistent manner and to see the position of chimneys relative to faults and traps. The detection of gas chimneys in seismic data has therefore been used as a tool in an effort to distinguish between hydrocarbon-charged traps and dry traps with associated chimneys. Based on such case studies, a model of trap classification has been proposed and tested on more than 100 drilled traps in the Norwegian North Sea with good results.

You do not currently have access to this article.

Figures & Tables

Contents

Geophysical Developments Series

Hydrocarbon Seepage: From Source to Surface

Fred Aminzadeh
Fred Aminzadeh
Search for other works by this author on:
Timothy B. Berge
Timothy B. Berge
Search for other works by this author on:
David L. Connolly
David L. Connolly
Search for other works by this author on:
Society of Exploration Geophysicists
Volume
16
ISBN electronic:
9781560803119
Publication date:
January 01, 2013

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal