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Fluid interaction mechanism and diagenetic reformation of basement reservoirs in Beier Sag, Hailar Basin, China
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LI Juan,WEI Pingsheng,SHI Lanting,CHEN Guangpo,PENG Wei,SUN Songling,ZHANG Bin,XIE Mingxian,HONG Liang
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Table 1 Data sheet of carbon-oxygen isotope composition test of carbonate filling in basement fractures of Beier Sag.
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| Sample No. | Well No. | Depth/m | Lithology | Analytical minerals | δ18O/‰ | δ13C/‰ | | 1 | B12 | 1 706.10 | Fine sandstone containing tuff and calcium | Calcite vein | -23.53 | -5.63 | | 2 | B12 | 1 705.70 | Tuffaceous fine sandstone | Calcite vein | -23.11 | -3.51 | | 3 | B16b2 | 1 864.10 | Tuff | Calcite vein | -23.93 | -4.30 | | 4 | B16b2 | 1 875.70 | Tuff | Calcite vein | -18.51 | -4.36 | | 5 | B30 | 2 205.20 | Slightly-cataclastic carbonation silty mudstone | Marble vein | -8.32 | -0.32 | | 6 | B38 | 2 555.48 | Cataclastic tuff | Calcite vein | -17.78 | -11.03 | | 7 | B38 | 2 559.40 | Cataclastic tuff | Calcite vein | -25.34 | -4.18 | | 8 | B38 | 2 487.83 | Cataclastic chloritization tuff | Calcite vein | -23.32 | -1.78 | | 9 | B40 | 2 362.80 | Cataclastic andesitic tuff | Calcite vein | -24.88 | -3.84 | | 10 | B40 | 2 367.30 | Andesitic tuff | Calcite vein | -26.73 | -3.79 | | 11 | B40 | 2 377.80 | Cataclastic andesitic tuff | Calcite vein | -23.39 | -3.48 | | 12 | B40 | 2 361.30 | Cataclastic andesitic tuff | Calcite vein | -26.14 | -4.11 | | 13 | D216 | 1 929.25 | Calciferous siltstone | Calcite vein | -23.35 | -4.31 |
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