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Propagation law of hydraulic fractures during multi-staged horizontal well fracturing in a tight reservoir
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Naizhen LIU,Zhaopeng ZHANG,Yushi ZOU,Xinfang MA,Yinuo ZHANG
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Table 1 Experimental parameters and cementation quality.
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Specimen
No. | In-situ stress state | Stage
spacing/cm | Perforation
depth/cm | Cementation
quality | Dimensionless net pressure in HF | | σv/MPa | σh/MPa | σH/MPa | Kh | | 1 | 20 | 8 | 16 | 1.00 | 2 | 1 | good | 0 | | 2 | 20 | 8 | 10 | 0.25 | 2 | 5 | good | 0 | | 3 | 20 | 8 | 10 | 0.25 | 5 | 1 | good | 0 | | 4 | 20 | 8 | 16 | 1.00 | 2 | 1 | good | 2 | | 5 | 20 | 8 | 10 | 0.25 | 2 | 5 | good | 2 | | 6 | 20 | 8 | 10 | 0.25 | 2 | 5 | poor | 0 |
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