Earth Science Frontiers ›› 2021, Vol. 28 ›› Issue (4): 327-336.DOI: 10.13745/j.esf.sf.2020.5.6
Previous Articles Next Articles
HE Mingqian(), HUANG Wenhui*(
), JIU Bo
Received:
2019-12-23
Revised:
2020-04-20
Online:
2021-07-25
Published:
2021-07-25
Contact:
HUANG Wenhui
CLC Number:
HE Mingqian, HUANG Wenhui, JIU Bo. Origin and evolution of gypsum dolomite as a favorable reservoir in the Ordos Basin, China[J]. Earth Science Frontiers, 2021, 28(4): 327-336.
井号 | 深度/m | 岩性 | 常量组分质量分数/10-2 | 微量元素质量分数/10-6 | δ18O/‰ | δ13C/‰ | Mn/Sr | Mg2+/ Ca2+ | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Na2O | CaO | MgO | Fe | Mn | Sr | ||||||||||||||
Y391 | 2 790.89 | 泥晶-粉晶 白云石 | 0.08 | 36.29 | 17.44 | 0.16 | 60.18 | 92.58 | -7.2 | -0.9 | 0.65 | 0.48 | |||||||
Y391 | 2 889.75 | 0.19 | 37.14 | 15.21 | 0.24 | 57.12 | 112.00 | -7.4 | -1.6 | 0.51 | 0.41 | ||||||||
Y391 | 2 810.63 | 0.15 | 36.25 | 15.66 | 0.19 | 51.63 | 103.26 | -5.3 | -0.8 | 0.50 | 0.43 | ||||||||
Y391 | 2 903.74 | 0.22 | 32.77 | 19.05 | 0.17 | 42.55 | 94.56 | -5.2 | 0.2 | 0.45 | 0.58 | ||||||||
Y628 | 2 810.72 | 0.05 | 30.81 | 18.73 | 0.18 | 57.97 | 90.58 | -5.6 | 0.5 | 0.64 | 0.61 | ||||||||
Y715 | 2 385.41 | 0.08 | 31.56 | 18.46 | 0.25 | 46.11 | 87.00 | -5.1 | 0.6 | 0.53 | 0.58 | ||||||||
Y715 | 2 340.41 | 0.02 | 32.66 | 15.3 | 0.37 | 63.33 | 107.34 | -5.9 | -0.8 | 0.59 | 0.47 | ||||||||
Y1725 | 2 260.82 | 0.08 | 35.19 | 15.45 | 0.16 | 61.28 | 94.28 | -6.8 | -0.3 | 0.65 | 0.44 | ||||||||
Y1725 | 2 301.43 | 0.09 | 37.19 | 18.12 | 0.24 | 58.12 | 113.96 | -6.3 | -0.3 | 0.51 | 0.49 | ||||||||
Y1757 | 2 906.43 | 0.14 | 36.44 | 17.88 | 0.16 | 50.67 | 101.34 | -6.3 | -0.4 | 0.50 | 0.49 | ||||||||
Y1758 | 3 060.91 | 0.22 | 31.87 | 23.15 | 0.18 | 52.55 | 116.78 | -6.2 | 0.2 | 0.45 | 0.73 | ||||||||
Y1758 | 3 599.74 | 0.21 | 33.98 | 18.73 | 0.19 | 56.97 | 89.02 | -5.4 | 0.4 | 0.64 | 0.55 | ||||||||
Y391 | 2 790.89 | 膏模孔内 白云石 | 0.04 | 37.89 | 14.2 | 0.31 | 71.09 | 100.13 | -6.0 | -0.3 | 0.71 | 0.37 | |||||||
Y391 | 2 889.75 | 0.14 | 31.11 | 13.9 | 0.21 | 55.98 | 114.24 | -5.5 | -0.3 | 0.49 | 0.45 | ||||||||
Y391 | 2 810.63 | 0.07 | 28.12 | 18.6 | 0.17 | 57.55 | 81.06 | -6.2 | -0.8 | 0.71 | 0.66 | ||||||||
Y391 | 2 810.63 | 细晶-中晶 白云石 | 0.02 | 22.29 | 25.86 | 0.76 | 118.54 | 41.02 | -9.7 | -1.8 | 2.89 | 1.16 | |||||||
Y391 | 2 903.74 | 0.05 | 22.23 | 29.34 | 0.45 | 150.02 | 47.32 | -7.9 | -0.2 | 3.17 | 1.32 | ||||||||
Y628 | 2 810.72 | 0.02 | 27.78 | 27.22 | 0.67 | 115.75 | 32.61 | -8.6 | -2.5 | 3.55 | 0.98 | ||||||||
Y715 | 2 385.41 | 0.02 | 26.43 | 30.66 | 0.76 | 180.56 | 62.48 | -8.3 | -1.8 | 2.89 | 1.16 | ||||||||
Y715 | 2 340.41 | 0.04 | 33.06 | 22.15 | 0.51 | 129.72 | 31.49 | -8.9 | -2.6 | 4.12 | 0.67 | ||||||||
Y1725 | 2 260.82 | 0.05 | 28.79 | 22.17 | 0.46 | 204.53 | 68.63 | -7.1 | -1.0 | 2.98 | 0.77 | ||||||||
Y1725 | 2 301.43 | 0.02 | 27.55 | 18.46 | 0.41 | 111.71 | 35.13 | -9.6 | -2.3 | 3.18 | 0.67 | ||||||||
Y1757 | 2 906.43 | 0.03 | 25.83 | 19.89 | 0.62 | 132.11 | 41.68 | -9.4 | -2.1 | 3.17 | 0.77 | ||||||||
Y1758 | 3 060.91 | 0.04 | 26.88 | 21.77 | 0.49 | 151.04 | 31.60 | -8.6 | -1.7 | 4.78 | 0.81 | ||||||||
Y1758 | 3 599.74 | 0.02 | 25.67 | 28.75 | 0.77 | 157.52 | 50.17 | -8.7 | -2.6 | 3.14 | 1.12 |
Table 1 Results of geochemical analysis of dolomite samples from M51 subsegment
井号 | 深度/m | 岩性 | 常量组分质量分数/10-2 | 微量元素质量分数/10-6 | δ18O/‰ | δ13C/‰ | Mn/Sr | Mg2+/ Ca2+ | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Na2O | CaO | MgO | Fe | Mn | Sr | ||||||||||||||
Y391 | 2 790.89 | 泥晶-粉晶 白云石 | 0.08 | 36.29 | 17.44 | 0.16 | 60.18 | 92.58 | -7.2 | -0.9 | 0.65 | 0.48 | |||||||
Y391 | 2 889.75 | 0.19 | 37.14 | 15.21 | 0.24 | 57.12 | 112.00 | -7.4 | -1.6 | 0.51 | 0.41 | ||||||||
Y391 | 2 810.63 | 0.15 | 36.25 | 15.66 | 0.19 | 51.63 | 103.26 | -5.3 | -0.8 | 0.50 | 0.43 | ||||||||
Y391 | 2 903.74 | 0.22 | 32.77 | 19.05 | 0.17 | 42.55 | 94.56 | -5.2 | 0.2 | 0.45 | 0.58 | ||||||||
Y628 | 2 810.72 | 0.05 | 30.81 | 18.73 | 0.18 | 57.97 | 90.58 | -5.6 | 0.5 | 0.64 | 0.61 | ||||||||
Y715 | 2 385.41 | 0.08 | 31.56 | 18.46 | 0.25 | 46.11 | 87.00 | -5.1 | 0.6 | 0.53 | 0.58 | ||||||||
Y715 | 2 340.41 | 0.02 | 32.66 | 15.3 | 0.37 | 63.33 | 107.34 | -5.9 | -0.8 | 0.59 | 0.47 | ||||||||
Y1725 | 2 260.82 | 0.08 | 35.19 | 15.45 | 0.16 | 61.28 | 94.28 | -6.8 | -0.3 | 0.65 | 0.44 | ||||||||
Y1725 | 2 301.43 | 0.09 | 37.19 | 18.12 | 0.24 | 58.12 | 113.96 | -6.3 | -0.3 | 0.51 | 0.49 | ||||||||
Y1757 | 2 906.43 | 0.14 | 36.44 | 17.88 | 0.16 | 50.67 | 101.34 | -6.3 | -0.4 | 0.50 | 0.49 | ||||||||
Y1758 | 3 060.91 | 0.22 | 31.87 | 23.15 | 0.18 | 52.55 | 116.78 | -6.2 | 0.2 | 0.45 | 0.73 | ||||||||
Y1758 | 3 599.74 | 0.21 | 33.98 | 18.73 | 0.19 | 56.97 | 89.02 | -5.4 | 0.4 | 0.64 | 0.55 | ||||||||
Y391 | 2 790.89 | 膏模孔内 白云石 | 0.04 | 37.89 | 14.2 | 0.31 | 71.09 | 100.13 | -6.0 | -0.3 | 0.71 | 0.37 | |||||||
Y391 | 2 889.75 | 0.14 | 31.11 | 13.9 | 0.21 | 55.98 | 114.24 | -5.5 | -0.3 | 0.49 | 0.45 | ||||||||
Y391 | 2 810.63 | 0.07 | 28.12 | 18.6 | 0.17 | 57.55 | 81.06 | -6.2 | -0.8 | 0.71 | 0.66 | ||||||||
Y391 | 2 810.63 | 细晶-中晶 白云石 | 0.02 | 22.29 | 25.86 | 0.76 | 118.54 | 41.02 | -9.7 | -1.8 | 2.89 | 1.16 | |||||||
Y391 | 2 903.74 | 0.05 | 22.23 | 29.34 | 0.45 | 150.02 | 47.32 | -7.9 | -0.2 | 3.17 | 1.32 | ||||||||
Y628 | 2 810.72 | 0.02 | 27.78 | 27.22 | 0.67 | 115.75 | 32.61 | -8.6 | -2.5 | 3.55 | 0.98 | ||||||||
Y715 | 2 385.41 | 0.02 | 26.43 | 30.66 | 0.76 | 180.56 | 62.48 | -8.3 | -1.8 | 2.89 | 1.16 | ||||||||
Y715 | 2 340.41 | 0.04 | 33.06 | 22.15 | 0.51 | 129.72 | 31.49 | -8.9 | -2.6 | 4.12 | 0.67 | ||||||||
Y1725 | 2 260.82 | 0.05 | 28.79 | 22.17 | 0.46 | 204.53 | 68.63 | -7.1 | -1.0 | 2.98 | 0.77 | ||||||||
Y1725 | 2 301.43 | 0.02 | 27.55 | 18.46 | 0.41 | 111.71 | 35.13 | -9.6 | -2.3 | 3.18 | 0.67 | ||||||||
Y1757 | 2 906.43 | 0.03 | 25.83 | 19.89 | 0.62 | 132.11 | 41.68 | -9.4 | -2.1 | 3.17 | 0.77 | ||||||||
Y1758 | 3 060.91 | 0.04 | 26.88 | 21.77 | 0.49 | 151.04 | 31.60 | -8.6 | -1.7 | 4.78 | 0.81 | ||||||||
Y1758 | 3 599.74 | 0.02 | 25.67 | 28.75 | 0.77 | 157.52 | 50.17 | -8.7 | -2.6 | 3.14 | 1.12 |
层位 | 孔隙度相关参数 | 渗透率相关参数 | 不同孔隙度样品频率/% | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
样品数/ 个 | 最大值/ % | 最小值/ % | 平均值/ % | 样品数/ 个 | 最大值/ mD | 最小值/ mD | 平均值/ mD | <2.5% | 2.5%~5% | 5%~8% | |||
马家沟组 | 1 322 | 11.45 | 0.01 | 2.34 | 1 085 | 96.89 | 0.000 2 | 0.42 | 72.90 | 19.53 | 6.13 | ||
M51 | 579 | 11.45 | 0.01 | 2.50 | 456 | 96.89 | 0.01 | 0.51 | 66.55 | 23.21 | 8.02 | ||
M52 | 138 | 9.1 | 0.2 | 2.8 | 114 | 79.9 | 0.002 2 | 1.27 | 49.64 | 38.69 | 10.95 | ||
M53 | 295 | 8.4 | 0.3 | 1.7 | 256 | 12.84 | 0.003 6 | 0.19 | 78.38 | 17.91 | 2.24 | ||
M54 | 310 | 9.64 | 0.01 | 1.88 | 228 | 6.338 | 0.001 6 | 0.16 | 81.55 | 13.27 | 4.53 |
Table 2 Physical properties of dolomite samples from M51 subsegment
层位 | 孔隙度相关参数 | 渗透率相关参数 | 不同孔隙度样品频率/% | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
样品数/ 个 | 最大值/ % | 最小值/ % | 平均值/ % | 样品数/ 个 | 最大值/ mD | 最小值/ mD | 平均值/ mD | <2.5% | 2.5%~5% | 5%~8% | |||
马家沟组 | 1 322 | 11.45 | 0.01 | 2.34 | 1 085 | 96.89 | 0.000 2 | 0.42 | 72.90 | 19.53 | 6.13 | ||
M51 | 579 | 11.45 | 0.01 | 2.50 | 456 | 96.89 | 0.01 | 0.51 | 66.55 | 23.21 | 8.02 | ||
M52 | 138 | 9.1 | 0.2 | 2.8 | 114 | 79.9 | 0.002 2 | 1.27 | 49.64 | 38.69 | 10.95 | ||
M53 | 295 | 8.4 | 0.3 | 1.7 | 256 | 12.84 | 0.003 6 | 0.19 | 78.38 | 17.91 | 2.24 | ||
M54 | 310 | 9.64 | 0.01 | 1.88 | 228 | 6.338 | 0.001 6 | 0.16 | 81.55 | 13.27 | 4.53 |
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