Shale oil and shale gas accumulation and production are significantly affected by shale properties, including thickness, organic matter properties (type, richness, and thermal maturity), brittleness, natural fractures, geostress, matrix porosity, matrix permeability, water saturation, and reservoir pressure. Among the techniques to evaluate these properties, petrophysical analysis has its merit and has been widely used in different shale plays around the world. To improve the interpretation results using wireline logs, multiple issues should be addressed. For example, how do we solve the mineral effect on organic matter richness estimate using density log? Is there a simple and reliable model to estimate...

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