In this presentation I will summarize two years in ShaleMech cooperation, a project that was devoted to the intensification of shale gas extraction. A brief introduction will be given, including an explanation of gas reservoir stimulation process and a description of utilized numerical methods (Lattice Boltzmann Method and Discrete Element Method). Then, I will show simulations that reproduce proppant transport in microfractures, which efficiency is crucial to successful gas extraction. A the end I will compare my approach to the one taken by my colleague