Research Article

Discrete Element Analysis for Hydraulic Fracture Propagations in Laminated Reservoirs with Complex Initial Joint Properties

Figure 9

Crack propagation under different joint strengths. (In the upper left corner of each picture, those two numbers represent approach angle and the strength ratio. Each crack is numbered in sequence and presented by the order of the rainbow color in the captions. For the interpretation of the references to color in this figure, the reader needs to refer to the web version of this article).
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