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Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage
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TANG Yong,LONG Keji,WANG Jieming,XU Hongcheng,WANG Yong,HE Youwei,SHI Lei,ZHU Huayin
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Table 3 Comparison of properties of gas reservoir fluids before and after storage construction.
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| Fluid | Saturation
pressure/MPa | Surface condensate density/(g?cm-3) | Mole Fraction
of C11+/% | Fluid
properties | GOR/
(m3?m-3) | | Original condensate gas | 24 | 0.73 | 1.000 | High content condensate gas | 2 508 | | Condensate gas at 4 MPa | 4 | — | 0.002 | Wet gas | 75 000 | | Condensate oil at 4 MPa | 4 | 0.82 | 29.810 | Condensate oil | — |
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