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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 1 Starting pressure gradient under different water saturations.
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| Water saturation/% | Average permeability/
10-3 μm2 | Inverse permeability/
10-3 μm2 | Starting pressure/
MPa | Starting pressure gradient/
(MPa·m-1) | | 66.34 | 0.315 2 | 3.173 | 0.086 40 | 0.019 20 | | 52.69 | 0.456 0 | 2.193 | 0.009 73 | 0.002 10 | | 39.96 | 0.624 0 | 1.603 | 0.002 39 | 0.000 53 |
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