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- W4285173684 abstract "Summary The Brazilian pre-salt carbonates are complex formations deposited in a peculiar lacustrine setting. These rocks are abruptly overlain by a thick salt layer, and the nature of this transition is still unclear. In the Santos Basin, this transition is marked by a 30m thick interval known as “Lula’s Fingers” characterized by a series of spikes in the Gamma-ray log. Despite the importance of this interval as a paleoenvironmental marker and as an oil reservoir, few works address its characteristics. For that reason, this work aims to disclose unique features identified in data from thin sections, plugs, and cores from the Lula’s Fingers interval in an oil field located in the central portion of the Santos Basin and discuss the processes that originated these features. The results indicate that Lula’s Fingers interval comprises reworked facies and, subordinately, in-situ and altered facies. The altered facies present several weathering-related features that indicate periods of exposure of previously-deposited rocks. This interpretation is strongly supported by the weathering profiles association with vuggy porosity levels, indicating that the interval was subjected to exposure and weathering cycles that led to the formation of secondary porosity, enhancing its potential as a reservoir." @default.
- W4285173684 created "2022-07-14" @default.
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- W4285173684 date "2022-01-01" @default.
- W4285173684 modified "2023-10-16" @default.
- W4285173684 title "Weathering-Related Features and Vuggy Porosity Generation in the Lula’s Fingers Interval — Brazilian Pre-Salt" @default.
- W4285173684 doi "https://doi.org/10.3997/2214-4609.202210405" @default.
- W4285173684 hasPublicationYear "2022" @default.
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