Beyond the critical Griffith crack length, the crack becomes dangerous.
2.
As a result, these pre-existing flaws were named Griffith cracks, and allow the conceptual assumption that rocks are relatively weak.
3.
In this case, these microfractures are analogous to Griffith Cracks, however they can often be sufficient to supply the necessary productivity, especially after completions, to make what used to be marginally economic zones commercially productive with repeatable success.
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