Time/m

Bottomhole pressure P_w/MPa

Influence radius R_e/m

Desorption radius

r/m

Theoretical cumulative gas production

Q_L/m³・t⁻¹

Actual

cumulative gas production

Q_S/m³・t⁻¹

Recovery rate

η/%

1

1.581

14.62

6.19

40532.34

0.00

0.00

6

0.545

35.81

18.03

525074.04

18306.78

3.49

12

0.152

50.64

26.57

1288303.46

81114.54

6.30

18

0.123

62.02

32.17

1950411.93

115318.03

6.91

24

0.122

71.61

36.72

2591424.48

455720.23

17.59

30

0.121

80.06

40.70

3230203.71

764080.55

23.65

36

0.120

87.71

44.26

3867264.08

1095565.18

28.33

42

0.119

94.73

47.52

4502960.87

1491565.18

33.12

48

0.117

101.27

50.55

5140260.34

1887565.18

36.72

54

0.116

107.42

53.37

5774300.88

2283565.18

39.55

60

0.115

113.23

56.03

6407599.99

2679565.18

41.82

66

0.113

118.75

58.56

7044038.23

3075565.18

43.66

72

0.112

124.03

60.96

7676571.78

3471565.18

45.22

78

0.111

129.10

63.26

8308693.21

3867565.18

46.55

84

0.110

133.97

65.47

8940480.57

4263565.18

47.69