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 | 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 |