Successful exploration and production programs for organic-rich shales depend significantly on the kerogen characterization, i.e., identification of kerogen content estimation of its maturity, and prediction of kerogen with different methods. When the kerogen matures, it initially produces oil, and then gas. The properties of kerogen remain poorly understood, and predicting the response of kerogen-rich rocks and kerogen maturity is a real challenge. The “sweet spot” identification in shale reservoirs usually includes mapping the distribution of organic richness (described as total organic carbon [TOC]), thickness of the organic-rich formation, levels of thermal maturity, and network of natural fractures (Figure 1)....

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