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Characteristics of parametamorphic rock reservoirs in Pingxi area, Qaidam Basin, NW China
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Zhiyuan XIA,Zhanguo LIU,Senming LI,Yongshu ZHANG,Bo WANG,Mingzhi TIAN,Jin WU,Kaizhen ZOU
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Table 2 Porosity and permeability of parametamorphic rocks in Pingxi area.
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| Well name | Formation | Depth/m | Lithology | Number of samples | Porosity/% | Permeability/10-3 μm2 | | Range | Average | Range | Average | | Dp17 | Ordovician | 4 300-4 456 | Crystalline limestone | 11 | 2.6-7.2 | 4.4 | 0.01-1.06 | 0.30 | | Calc-schist | 4 | 1.2-2.2 | 1.9 | <0.01 | <0.01 | | 4 558-4 562 | Calc-schist | 6 | 1.6-4.3 | 3.6 | 0.01-0.33 | 0.10 | | Dp172 | Silurian | 4 405-4 425 | Slate | 3 | 5.0-6.3 | 5.5 | 0.20-1.40 | 0.80 | | Ordovician | 4 599-4 604 | Calc-schist | 11 | 1.4-6.2 | 3.5 | 0.01-0.10 | 0.06 |
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