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Technical strategies for effective development and gas recovery enhancement of a large tight gas field: A case study of Sulige gas field, Ordos Basin, NW China
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JI Guang,JIA Ailin,MENG Dewei,GUO Zhi,WANG Guoting,CHENG Lihua,ZHAO Xin
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Table 3 Suitable well pattern density at different gas prices.
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Gas price/
(CNY·m-3) | Average IRR of 8% per well | Breakeven of infilled well | Comprehensive judgement | Ave. well EUR/
104 m3 | Well pattern density/
(well·km-2) | Output increment of
infilled well/104 m3 | Well pattern density/
(well·km-2) | Well pattern density/
(well·km-2) | | 1.00 | ≥1 659 | ≤5.1 | ≥1 278 | ≤3.4 | 3 | | 1.10 | ≥1 396 | ≤6.3 | ≥1 073 | ≤4.2 | 4 | | 1.30 | ≥1 206 | ≤7.5 | ≥928 | ≤4.4 | 4 | | 1.50 | ≥1 020 | ≤9.0 | ≥785 | ≤4.8 | 4 | | 1.80 | ≥826 | ≤11.5 | ≥637 | ≤5.3 | 5 | | 2.00 | ≥736 | ≤12.8 | ≥566 | ≤5.6 | 5 |
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