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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 2 Statistics on remaining reserves in the enrichment area of the central Sulige gas field.
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| Remaining reserve | Genetic type | Ratio | | Inter-layer remaining reserve | Thin layer or gas-bearing layer left by
incomplete perforation in vertical wells | 9% | | Minor layers missed by horizontal wells | 9% | | Inter-well remaining reserve | Isolated gas-bearing sand bodies
uncontrolled by well patterns | 57% | | Gas blocked in complex sand bodies | 25% |
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