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Abstract

The analysis of passively recorded low-frequency microtremors for detecting hydrocarbon (HC) reservoirs is an emerging technology, which has created some debate in the last few years. On one hand, these microtremors have been proposed as a reservoir indicator with potential for optimizing well placement during exploration, appraisal, and development. On the other, pitfalls in both the analysis of low frequency passive seismic and the proposed models of its generation have been also reported when anthropogenic noise overlaps and is mistaken for possible HC microtremor. During April/May 2010 a low frequency passive seismic survey was undertaken over an exploration area in the Albertine Graben, Uganda, to record seismic tremor and to explore the possibility of its exploitation in this area. In this paper, we describe the survey and resulting analysis of data recorded at locations above and away from the reservoir, and we investigate the temporal and spatial distribution of the data spectral content. A definite spatial distribution of derived seismic wavefield attributes exists and it is proposed that these observations are more likely to be related to the geology and structure of the sedimentary basin rather than to the presence of HC.

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/content/papers/10.3997/2214-4609.20145308
2011-03-27
2024-03-29
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20145308
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