Abstract

The objective of this work is to submit an innovative workflow where, we combine clustering techniques based on direct measurements over cutting with multidisciplinary studies performed in cutting and sidewall cores (SWC). The case studied corresponds SWC and cutting samples of 2 wells of the Palermo Aike Formation (PA), Tierra del Fuego, Austral Basin.

In the first part, the results of the combined use of different compositional characterization tools on samples of drilling cuttings from wells that cross the Palermo Aike Formation in Tierra del Fuego are shown. We apply clustering techniques on direct measurements of XRF, colorimetry, well curves and total organic carbon allow obtain different groups (colors) which represent zones with compositional characteristics that define and individualize them. In each of these groups, more detailed petrographic, geochemical and compositional analyzes were carried out, which in principle allowed us to confirm the consistency with the direct measurements. This consistency allows the expansion of the detailed characterization to the entire range represented by the group.

Then, through an integration of data from the set of wells studied, it was possible to identify different areas of interest with their own characteristics and these areas were correlated between the wells studied.

In this step, we need to move forward to have a deeper understanding of the characteristics of the source rock. To reach this goal we apply a detailed and exhaustive workflow on sidewall cores (SWC) belonging to the areas of interest. The aim of the workflow is understanding the relationship between compositional, geochemical, petrographic and petrophysical characteristics. It means link the smaller-scale characterizations with the results obtained from the laboratory petrophysical measurements carried out on the samples.

The synergy resulting from the different studies allowed us to understand the characteristics and behaviors of the groups. These deeper understanding was expanded to the groups described by cutting, connecting through characteristics the behaviors of zones without samples. Thus, it enabled us to define regions of interest and also, a deeper understanding of the mentioned areas.

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