Geological Maps

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.

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Featured Resources

When seismic is not enough

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]

The new frontier: Resurgence of Gravity and Magnetics

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]

Advances in processing and interpreting gravity and magnetics

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]

Applying gravity and magnetics in deepwater exploration

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]

Pushing the Envelope: Integrated approaches in Oil Exploration

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]

A Marathon Record

Innovative integration of gravity and magnetic methods help Marathon Oil Corporation maintain world leadership in oil and gas exploration. [Article]


Giving seismic an uplift with gravity and magnetic modellingTaking the time to integrate gravity and magnetics with seismic data can pay off for oil and gas explorers with limited budgets. 
Enhancing geological interpretations with gravity and magnetics across all petroleum playsAs the utility of gravity and magnetic methods for oil exploration expands, so does the need for more awareness on how these methods can be used to enhance geological interpretations.
Narrowing the Field: The new role of Gravity and Magnetics in Oil ExplorationAdvances in processing and interpreting gravity and magnetic survey data are opening up highly promising new roles for the technique in oil and gas exploration.
Benefits of rapid data assessment and visualization prove themselves in exploration scenariosRapid data assessment and dynamic visualization helps to reduce risk and to increase prospecting capabilities in exploration.
When seismic isn't enoughInterview with Dr. Michal Ellen Ruder, Wintermoon Geotechnologies, on the use of gravity and magnetic methods for Oil and Gas exploration.
Harnessing the Power of ParkerGeosoft’s Gerry Connard explains the advantages of using Fast Fourier Transforms (FFT) for gravity and magnetic modelling.

Reports & eBooks

Earth Explorer: 2016 Energy ReportA compilation of top Earth Explorer articles featuring integrated gravity and magnetic and seismic approaches, managing gravity and magnetic data, exploring in challenging subsalt environments, and innovations in renewable and clean energy. 
The New Frontier: Exploring for Oil with Gravity and Magnetics

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.

Earth Explorer: 2014 Energy Report A compilation of top Earth Explorer articles featuring integrated gravity and magnetic and seismic approaches, and applied success in exploring for oil in complex, offshore and deepwater environments. 
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