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Unique System of Analysis

The acquisition of modern high-resolution aeromagnetic data has revolutionized the use of potential methods in oil and gas exploration. The combination of more sensitive equipment, multi-component sensors, closer flight lines, lower altitude and digital data acquisition means that the amount of data acquired has multiplied by orders of magnitude. Within these data sets there is significantly more information which must be extracted to achieve full value from the survey. It is imperative that new approaches to processing and interpretation be applied to match the new acquisition techniques.

Working with the client Archimedes Consulting can add significant value to the results of high- resolution aeromagnetic surveys for petroleum exploration. As well as the conventional processes of reduction to the pole, depth to basement, etc we apply new methods and techniques to the interpretation of the data. The techniques used involve two principal methods:

Energy Spectral Analysis (ESA)

ESA with related filtering and required transformations, is applied to aeromagnetic or gravity grid data. The application of ESA involves using a moving window (ESA-MW) technique, combined with a Multi-Window Technique (ESA-MWT) to detect horizons.

Click here for more detailed information about ESA.

Automatic Curve Matching (ACM)

ACM is applied to the original flight-line data and profile data extracted from a grid in east-west, north-south, northwest and northeast directions. The method works by identifying a magnetic anomaly on a profile and comparing the observed anomaly with one that is computed for a theoretical prism, thin plate or edge model, varying the parameters and accepting the model which provides the best fit.

Click here for more detailed information about ACM.

Copyright Archimedes Consulting Pty Ltd. 2009.