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An analysis of the uniformity of multi-fracture initiation based on downhole video imaging technology: A case study of Mahu tight conglomerate in Junggar Basin, NW China
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ZANG Chuanzhen,JIANG Hanqiao,SHI Shanzhi,LI Jianmin,ZOU Yushi,ZHANG Shicheng,TIAN Gang,YANG Peng
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Table 1. Fracturing operation parameters of test well
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| Stage | The number
of clusters | Cluster
spacing/m | Number of
perforations
in a cluster | Sanding
volume/m3 | Injection rate/
(m3·min-1) | Fluid
volume/m3 | Temporary
plugging | The number of temporary plugging balls | Quality of temporary
plugging agent/kg | | Diameter of 22 mm | Diameter of 25 mm | Powder | Particles with different
diameters | 1-3
mm | 3-5
mm | 5-10
mm | 10-13
mm | | 2 | 6 | 12.0 | 3 | 111 | 9.3 | 2796.0 | Yes, after 60 m3 sanding | 14 | 13 | 60 | 60 | 60 | 60 | | | 3 | 6 | 11.4 | 3 | 121 | 10.0 | 2746.4 | No | | | | | | | | | 4 | 6 | 11.7 | 3 | 60 | 10.0 | 2183.2 | No | | | | | | | | | 5 | 6 | 11.5 | 8 | 180 | 10.4-11.5 | 3213.6 | Yes, after 90 m3 sanding | 36 | 36 | 80 | | 60 | 60 | 40 | | 6 | 6 | 17.9 | 3 | 180 | 11.0 | 3567.3 | Yes, after 90 m3 sanding | 14 | 13 | 80 | | 60 | 60 | 40 |
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