Research Article
Gas Displacement Engineering Test by Combination of Low and Medium Pressure Injection with Liquid CO2 in High Gas and Low Permeability Coal Seam
Table 5
Comparison of economic benefits.
| | Name of project | Number of boreholes | Depth of borehole (m) | Construction cost (in RMB 10000) | Raw material cost (in RMB 10,000) | Project cost (in RMB 10,000) |
| | Original gas extraction project | 56 | 140 | 43.12 | — | 43.12 | | Project of gas displacement by liquid CO2 | 15 | 140 | 11.55 | 16.6 | 28.15 |
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