Chocó (San Juan Sub-basin)


Geochemistry

Geochemical analyses indicate the existence of rich hydrocarbon source rocks intervals within the Iró Formation, which constitutes the base of the Cenozoic sequence in the San Juan sub-basin. These intervals show high content of organic matter and prevalence of type II kerogen, with high hydrogen content. Geochemical characteristics of each segment are summarized below:

In short, it is clear that the formation Iró (in its three segments) has a generation potential ranging from favorable to excellent (Figure 10).

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Figure 10