Time/m | Bottomhole pressure Pw/MPa | Influence radius Re/m | Desorption radius r/m | Theoretical cumulative gas production QL/m3・t−1 | Actual cumulative gas production QS/m3・t−1 | Recovery rate η/% |
1 | 1.552 | 16.84 | 7.08 | 54433.648 | 0 | 0.00 |
6 | 0.503 | 41.25 | 20.68 | 709580 | 33043.44 | 4.66 |
12 | 0.325 | 58.35 | 29.35 | 1551726.9 | 139273.06 | 8.98 |
18 | 0.252 | 71.46 | 35.82 | 2406545.1 | 282351.16 | 12.10 |
24 | 0.210 | 82.52 | 41.19 | 3266204.2 | 490164.24 | 15.01 |
30 | 0.183 | 92.26 | 45.86 | 4128091.3 | 694397.2 | 16.82 |
36 | 0.163 | 101.07 | 50.04 | 4991033.1 | 896396.69 | 17.96 |
42 | 0.148 | 109.17 | 53.86 | 5854416.5 | 1215320.84 | 20.76 |
48 | 0.136 | 116.71 | 57.39 | 6717891.5 | 1531593.44 | 22.80 |
54 | 0.126 | 123.79 | 60.69 | 7581245.5 | 1882333.16 | 24.83 |
60 | 0.118 | 130.49 | 63.80 | 8444344.8 | 2267540.00 | 26.85 |
66 | 0.111 | 136.86 | 66.74 | 9307103.3 | 2687213.96 | 28.87 |
72 | 0.105 | 142.94 | 69.54 | 10169464.7 | 3141355.04 | 30.89 |
78 | 0.100 | 148.78 | 72.22 | 11031392.7 | 3629963.24 | 32.91 |
84 | 0.096 | 154.40 | 74.79 | 11892863.9 | 4153038.56 | 34.92 |