Table 1 Geological information of the two Blocks.

From: Analysis of bacterial diversity in two oil blocks from two low-permeability reservoirs with high salinities

Block

Well ID

Oil production (t/day)

Water content (%)

pH

Temperature(°C)

Salinity (mg/L)

Average salinity (mg/L)

Liu

L.IW

7.2

54 ± 3.62

972

L.77.35

4.65

40.00

7.6

17101

17477 ± 6683.94

L.84.39

1.59

78.41

7.8

24341

L.81.58

2.35

85.14

7.9

10989

Wangyao

W.IW

7.6

45 ± 4.38

40833

W.31.022

1.31

75.90

7.5

75817

40940 ± 31762.93

W.9.27

0.95

64.60

7.5

13674

W.14.08

0.48

78.00

7.4

33329

  1. Note: L: Block Liu; W: Block Wangyao; L.IW: Injection water of Block Liu; W.IW: Injection water of Block Wangyao.