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

2.906

124.33

3.45

28201.15

0.00

0.00

6

2.305

198.23

42.47

1177436.25

0.00

0.00

12

1.524

238.72

88.90

8001914.60

1500.77

0.02

18

1.007

266.70

121.99

17811923.66

241334.18

1.35

24

0.666

288.84

145.91

27815843.73

1415691.28

5.09

30

0.440

307.49

163.89

36989249.73

3661554.51

9.90

36

0.291

323.79

141.93

45106632.79

6672425.60

14.79

42

0.192

338.37

150.94

52234816.44

10238308.40

19.60

48

0.127

351.64

158.48

58527918.45

14600518.40

24.95

54

0.084

363.86

164.97

64148329.28

19759055.60

30.80

60

0.056

375.23

170.67

69238930.34

25713920.00

37.14

66

0.037

385.89

175.77

73916137.79

32465111.60

43.92

72

0.024

395.93

180.43

78271072.6

40012630.40

51.12

78

0.016

405.46

184.72

82373453.24

48356476.40

58.70

84

0.011

414.53

188.72

86275944.36

57496649.60

66.64