Oil & Gas Geology ›› 2021, Vol. 42 ›› Issue (3): 547-556.doi: 10.11743/ogg20210302
• Petroleum Geology • Previous Articles Next Articles
Yongli Liu1,2(), Donghua You3, Haiying Li2, Lijun Gao2, Hong Jiang3, Weifeng Zhang2, Fang Bao3
Received:
2021-01-04
Online:
2021-06-28
Published:
2021-06-23
CLC Number:
Yongli Liu, Donghua You, Haiying Li, Lijun Gao, Hong Jiang, Weifeng Zhang, Fang Bao. Characterization and evaluation of chert reservoirs in ultra-deep carbonate rock formations-A case study on Well TS 6 in the Tarim Basin[J]. Oil & Gas Geology, 2021, 42(3): 547-556.
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Table 1
Mineral composition of chert reservoirs of the Ordovician Penglaiba Formation in Well TS6, Tarim Basin"
样品号 | 矿物含量/% | |||||
粘土 | 石英 | 方解石 | 白云石 | 黄铁矿 | 其他矿物 | |
TS6-2-1 | 5.2 | 84.9 | 7.8 | 0.6 | 0.9 | 0.6 |
TS6-2-2 | 7.8 | 85.2 | 5.6 | 0.1 | 0.7 | 0.6 |
TS6-14-1 | 9.0 | 86.7 | 3.2 | 0.5 | — | 0.6 |
TS6-14-2 | 4.4 | 93.7 | 0.4 | 0.5 | 0.7 | 0.3 |
1-5 | 4.8 | 83.0 | 10.1 | 0.1 | 1.8 | 0.2 |
2-1 | 3.3 | 91.8 | 3.7 | 0.5 | 0.5 | 0.2 |
Table 2
Calculation results of pore volume proportion of diverse pore diameters in the chert reservoirs of the Ordovician Penglaiba Formation in Well TS6, Tarim Basin"
样品号 | 总孔隙度/% | 不同孔隙直径分布范围的孔隙体积占比/% | |||
< 0.1 μm | 0.1~1 μm | 1~10 μm | >10 μm | ||
2-8 | 9.1 | 1.11 | 2.48 | 5.52 | — |
2-9-2 | 8.2 | 1.06 | 2.39 | 4.60 | 0.15 |
2-9-3 | 8.5 | 1.34 | 2.86 | 4.30 | — |
12 | 17.4 | 1.48 | 3.97 | 11.92 | 0.03 |
22 | 12.3 | 1.08 | 1.28 | 8.68 | 1.26 |
1 | 13.0 | 11.37(< 10 μm的孔隙体积占比) | 1.63 | ||
24 | 12.8 | 9.84(< 10 μm的孔隙体积占比) | 2.96 |
Table 3
Comparison of porosity and permeability between chert reservoirs and dolomite samples from the Ordovician Penglaiba Formation in Well TS6, Tarim Basin"
样品号 | 深度/m | 岩性 | 孔隙度/% | 渗透率/(10-3 μm2) | 备注 |
1 | 7 418.38 | 硅质岩(薄层) | 13.0 | 0.05 | 井壁取心 |
2 | 7 418.68 | 硅质岩(薄层) | 17.1 | 0.08 | 井壁取心 |
12 | 7 547.47 | 硅质岩(厚层) | 17.4 | 0.13 | 井壁取心 |
13 | 7 548.00 | 硅质岩(厚层) | 12.6 | 0.36 | 井壁取心 |
14 | 7 549.09 | 硅质岩(厚层) | 12.3 | — | 井壁取心 |
16 | 7 554.19 | 硅质岩(厚层) | 27.9 | 0.71 | 井壁取心 |
19 | 7 561.49 | 硅质岩(厚层) | 11.0 | 0.03 | 井壁取心 |
21 | 7 571.48 | 硅质岩(厚层) | 16.2 | 0.54 | 井壁取心 |
22 | 7 576.71 | 硅质岩(厚层) | 12.3 | 0.09 | 井壁取心 |
24 | 7 592.65 | 硅质岩(厚层) | 12.8 | 0.66 | 井壁取心 |
25 | 7 603.85 | 硅质岩(厚层) | 10.2 | 0.13 | 井壁取心 |
2-8 | 7 442.60 | 硅质岩(薄层) | 9.1 | 0.02 | 岩心 |
2-9-2 | 7 442.70 | 硅质岩(薄层) | 8.2 | 0.02 | 岩心 |
2-9-3 | 7 442.75 | 硅质岩(薄层) | 8.5 | 0.01 | 岩心 |
5 | 7 432.48 | 白云岩 | 4.5 | 0.01 | 井壁取心 |
9 | 7 491.18 | 白云岩 | 3.0 | 0.02 | 井壁取心 |
28 | 7 268.79 | 白云岩 | 1.6 | 0.09 | 井壁取心 |
29 | 7 716.48 | 白云岩 | 5.3 | 0.03 | 井壁取心 |
2-9-4 | 7 442.80 | 白云岩 | 1.3 | 0 | 岩心 |
2-9-5 | 7 442.85 | 白云岩 | 1.0 | 0 | 岩心 |
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