Evaluation of gas hydrate saturation by effective medium theory in shaly sands: a case study from the Qilian Mountain permafrost, China

Gas hydrate saturation calculation is a complex problem in the evaluation of gas hydrate reservoirs in the Qilian Mountain permafrost. From observations of the actual rock samples and experimental results from scanning electron microscopy images, gas hydrate reservoirs contain some extent of laminated and dispersed clay that affects the resistivity response of formation rocks. In light of this situation, we need to consider the influence of clay...