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High Resolution Mini-3D Seismic Surveys as a Rapid and Cost-Effective Method for Detailed Structural Mapping
- Source: First Break, Volume 43, Issue 1, Jan 2025, p. 57 - 62
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- 01 Jan 2025
Abstract
Unidentified structural features, primarily faults, are estimated to cost the coal mining industry in Australia alone $6 billion per year. Although seismic surveys are routinely used to characterise structures ahead of mining, these are often limited to 2D lines, with only the most recent being high-resolution 3D surveys. The most common approach for providing detailed structural definition is to drill a series of holes. In this paper we show a comparison between a full high-resolution 3D survey and a much smaller mini-survey over an area of particular structural complexity. The extracted surfaces, corresponding to three different coal seams, and the resulting structural interpretations, were consistent. Based on these results we are confident this approach can be used as an alternative to drilling to quickly and easily identify possible structural issues in high-priority areas. The method could also be used to accurately measure the strike of faults identified from 2D surveys.