Archimedes News

Archimedes attended the AEGC 2018 25th Australasian Exploration Geoscience Conference in Sydney, Australia, on February 18-21st, 2018. Archimedes had a Poster called "Improved Imaging of the Sub-Surface Geology in the Mowla Terrace, Canning Basin using Gravity Gradiometry Data". Archimedes attended the APPEA 2018 Conference and Exhibition in Adelaide, Australia, on May 14-17th, 2018. Archimedes had a poster presentation titled "Mapping Geology beneath Volcanics using Magnetic Data".

Unique System of Analysis

The acquisition of modern high-resolution airborne magnetic, gravity and gradiometer 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 magnetic, gravity and gradiometry surveys for petroleum exploration. As well as the conventional processes of reduction to the pole, Bouguer correction, depth to crystalline 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 magnetic 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 magnetic 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.

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