Abstract This paper couple the proppant transport model into a fracturing simulator to simulate multi-cluster fracturing of coal rock. The coupled model considers the three-dimensional fracture propagation and proppant transport. Based on this model, the proppant transport within 3D fractures is studied, and the proppant placement effect is evaluated. The results show that: (1) When the ratio of 20/40 mesh proppant to 16/20 mesh proppant is 4:1, it can ensure both high conductivity and propped area. (2) When the proppant volume increases from 140 m 3 to 280 m 3 , the propped area increases by 40%, but further increasing to 350 m 3 does not significantly change the propped area. (3) The impact of the pumping schedule on the distribution of proppant is not significant. To ensure near-wellbore conductivity, it is recommended to use a ramp-up or pulse schedule. (4) High viscosity fluid cause high net pressure within the fracture, a wide fracture width, and smaller fracture size for the same fluid volume. The research in this paper has guiding significance to the fracturing development of coalbed methane.
Wang et al. (Mon,) studied this question.
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