Table 5 The reservoir utilization status analysis.

From: Migration and plugging laws of plugging-selection balls in fine profile control process of layered waterflooding wells

Category

Number of layers

Layer thickness (m)

Proportion (%)

Activated layer

19

51.6

31.5

Restricted layer

16

44.0

26.9

Strengthened layer

5

34

20.8

Total

40

129.6

79.2

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