In an interview with Dr. Michal Ellen Ruder, Wintermoon Geotechnologies Inc, she reviewed the basics of using gravity and magnetic methods for Oil and Gas exploration. Dr. Ruder explains how and when to use your magnetic and gravity data to further leverage your seismic data, improve depth models and define or constrain geometry in challenging areas. [Article]
Gravity and Magnetic Methods
for Oil Exploration
While seismic exploration remains the primary method of exploring for petroleum, use of gravity and magnetic methods has continued to expand, based on their contribution to reliable evaluations (and recent discoveries) in deeper, more challenging environments such as sub-salt structures and deep sea.
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Discovering and assessing oil or gas deposits requires integration of information culled from geology, geochemistry, drilling, GIS, seismology, EM, potential fields, and other disciplines.
By gathering geophysical data to narrow the search area within large fields, exploration crews can refine their targets and apply seismic techniques more efficiently. Combining seismic and gravity methods enables oil explorers to better define and focus projects early on, and minimise the risk of conducting expensive investigation before potential is determined.
Advancements in earth mapping technologies, coupled with the industry's emerging need to characterize sub-surface systems, have led to a resurgence of interest in using gravity and magnetic methods in Oil and Gas exploration and development. [Article]
There was a time when gravity and magnetic surveys were considered the rough first cut to zero in on locations to set up their seismic gear. That's all changing. As the quality of gravity and magnetic data improves, grav/mag methods are being used to complement and constrain traditional seismic data or even used as the only tool. [Article]
With its roots in exploration 55 years ago, Petrobras has matured into a world renowned integrated oil company without losing its explorer focus, leading the world in deepwater expertise. Integration of gravity and magnetics as part of their exploratory tools, enabled them to see beneath the ocean's post salt layer, contributing to their Santos Basin discoveries. [Article]
Since graduating from Purdue University in 1981, Geophysical consultant Mark Longacre has been dedicated to the field of Oil and Gas exploration, specializing in gravity and magnetics. He's had direct involvement in over 1,000,000 line kilometers of high-resolution aeromagnetic (HRAM) data acquisition, processing and interpretation. [Article]
Innovative integration of gravity and magnetic methods help Marathon Oil Corporation maintain world leadership in oil and gas exploration. [Article]
Reports & eBooks
Integrative approaches, combining gravity and magnetics with seismic, are helping to focus oil and gas exploration in frontier and deepwater environments. This special report features some of the experience and innovation that’s driving new discovery success.
Bird Geophysical, Gibson Consulting Solutions
British Antarctic Survey, Columbia University, Lamont-Doherty Earth Observatory
MBL, Northwest Geophysical Associates
Northwest Geophysical Associates
Beti Slakeska, Keith Jones
Gerry Connard, Ash Johnson