Table 6 Restraining barrier of Chang 4 + 5 in the block.

From: Water-flooding characteristics of lithologic reservoir in Ordos basin

Horizon

Thickness (m)

Wells

Max

Min

Thickness = 0

Total

Proportion/%

Chang4 + 521-Chang4 + 522

14.6

0.48

9

103

8.74

Chang4 + 522-Chang4 + 523

25.94

0.55

79