AAPG Studies in Geology No. 48 / SEG Geophysical References
Series No. 11, Chapter 7: Successful Application of Micromagnetic Data to
Focus Hydrocarbon Exploration, by James A. Wolleben and
David W. Greenlee, Pages 175 - 191
from:
AAPG Studies in Geology No. 48 /
SEG Geophysical References Series No. 11: Surface
Exploration Case Histories: Applications of Geochemistry, Magnetics, and Remote Sensing,
Edited by Dietmar Schumacher and Leonard A. LeSchack
Copyright © 2002 by The American Association of Petroleum Geologists and the
Society of Exploration Geophysicists. All rights reserved.
Chapter 7
Successful Application of Micromagnetic Data to Focus Hydrocarbon Exploration
James A. Wolleben
Advanced Micromagnetics, Inc.
Austin, Texas, U.S.A.
David W. Greenlee
Advanced Micromagnetics, Inc.
Austin, Texas, U.S.A.
ABSTRACT
Low-level, high-resolution aeromagnetic data acquired along closely spaced flight lines
provide information that can be used to detect magnetic enrichment produced by vertical
microseepage from hydrocarbon traps. Aeromagnetic data acquired prior to drilling display
characteristic micromagnetic hydrocarbon signals over areas in which significant
production is later established. Three examples of newly discovered west Texas
Pennsylvanian production, one example of Jurassic production in Alabama, and examples of
various fields in Texas Railroad Commission District 4 are presented. Seismic and
aeromagnetic data from an unsuccessfully drilled micromagnetic lead are reviewed, and
aeromagnetic data over large nonprospective areas are displayed. To date, 87% of the
micromagnetic leads that subsequently have been drilled have yielded economically
successful fields or field extensions.