We found the paper “Application of horizontal wells in three-dimensional shale reservoir modeling: A case study of Longmaxi–Wufeng shale in Fuling gas field, Sichuan Basin” by Wang et al. (2018) interesting because it deals with methods for modeling reservoir properties in shale reservoirs. The paper has merit, and it is quite thorough in investigating several problems, including the construction of a structural model using horizontal wells. However, we think that some of the key points regarding the three-dimensional (3-D) modeling of rock and petrophysical properties argued in the paper are unclear or suboptimal, including the following:

  1. the approaches used to...

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