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Geofluids
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2020
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Article
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Tab 2
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Research Article
Experimental Study on the Damage of Artificial Fracture Permeability in Coal during the Flow Back of Guar-Based Fracturing Fluid
Table 2
The evaluation indexes of fracturing fluid damage degree.
Damage rate, %
<5
<30
30-50
50-70
>70
The damage degree
None
Weak damage
Moderately weak
Moderately strong
Strong damage