Oil & Gas Geology ›› 2021, Vol. 42 ›› Issue (5): 1098-1111.doi: 10.11743/ogg20210508
• Petroleum Geology • Previous Articles Next Articles
Zhaobing Chen1,2(), Zhenyu Zhao3, Ling Fu3,*(), Jianrong Gao3, Wei Song3, Xinjing Chen4
Received:
2020-02-24
Online:
2021-10-28
Published:
2021-10-26
Contact:
Ling Fu
E-mail:zbchen@xsyu.edu.cn;fuling@petrochina.com.cn
CLC Number:
Zhaobing Chen, Zhenyu Zhao, Ling Fu, Jianrong Gao, Wei Song, Xinjing Chen. Interstitial matter and its impact on reservoir development in Chang 6 deepwater tight sandstone in Huaqing area, Ordos Basin[J]. Oil & Gas Geology, 2021, 42(5): 1098-1111.
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Table 1
X-ray diffraction analysis of clay minerals in Chang 6 sandstone in Huaqing area, Ordos Basin"
样品号 | 深度/m | 粘土矿物相对含量/% | 伊/蒙混层比/% | |||
伊/蒙混层 | 伊利石 | 高岭石 | 绿泥石 | |||
HQ1-1 | 2 132.8 | 57 | 26 | 3 | 14 | 5 |
HQ2-2 | 2 073.3 | 38 | 5 | 11 | 46 | 5 |
HQ3-1 | 2 087.6 | 50 | 10 | 5 | 35 | 5 |
HQ4-1 | 2 091.0 | 25 | 7 | 11 | 57 | 5 |
HQ5-1 | 2 199.5 | 59 | 29 | 3 | 9 | 10 |
HQ6-4 | 2 259.1 | 59 | 20 | 4 | 17 | 10 |
HQ6-7 | 2 264.0 | 63 | 23 | 3 | 11 | 10 |
HQ7-1 | 2 269.1 | 61 | 8 | 4 | 27 | 5 |
HQ8-3 | 2 206.1 | 73 | 13 | 3 | 11 | 5 |
HQ10-1 | 2 241.3 | 42 | 7 | 6 | 45 | 10 |
HQ11-1 | 2 241.6 | 59 | 4 | 4 | 33 | 10 |
HQ11-3 | 2 055.2 | 60 | 7 | 5 | 28 | 10 |
HQ12-1 | 2 099.6 | 53 | 6 | 6 | 35 | 5 |
HQ12-3 | 2 103.6 | 41 | 4 | 7 | 48 | 5 |
HQ13-1 | 2 105.9 | 28 | 5 | 10 | 57 | 5 |
HQ14-1 | 2 208.4 | 10 | 2 | 15 | 73 | 5 |
HQ14-2 | 2 212.8 | 2 | 2 | 15 | 81 | 5 |
HQ14-4 | 2 222.4 | 11 | 2 | 16 | 71 | 5 |
平均 | 44 | 10 | 7 | 39 | 7 |
Table 2
Statistics of intercrystalline pore size of different clay minerals and its contribution to porosity in Chang 6 sandstone, Huaqing area, Ordos Basin"
粘土矿物 | 晶胞结构 | 产状 | 晶间孔占粘土矿物体积比/% | 晶间孔孔径/nm | 孔隙贡献率/% | 样品数/个 | |||
范围 | 平均 | 主体范围 | 平均 | ||||||
伊利石 | 2 ∶1 | 丝缕状 | 80~95 | 90 | 500~4 000 | 900 | 10.3 | 11 | |
片状 | 60~80 | 70 | 50~3 000 | 600 | |||||
伊/蒙混层 | 2 ∶1 | 蜂窝状、网状 | 60~70 | 65 | 100~4 000 | 750 | 8.6 | 8 | |
绿泥石 | 2 ∶1 | 叶片状 | 35~50 | 40 | 50~1 000 | 240 | 3.7 | 8 | |
绒球状 | 25~40 | 30 | 20~800 | 180 | |||||
高岭石 | 1 ∶1 | 松散书页状、蠕虫状 | 45~65 | 55 | 50~4000 | 700 | 7.8 | 12 |
Table 3
Quantitative analysis data of whole rock minerals of Chang 6 sandstone by X-ray diffraction in Huaqing area, Ordos Basin"
样品编号 | 深度/m | 矿物含量/% | ||||||
石英 | 斜长石 | 钾长石 | 方解石 | 白云石 | 菱铁矿 | 粘土矿物总量 | ||
HQ1-1 | 2 132.8 | 57.8 | 11.9 | 3.1 | 1.4 | 3.5 | 0.3 | 22.0 |
HQ2-2 | 2 073.3 | 28.6 | 40.7 | 6.6 | 4.4 | 4.7 | 0.0 | 15.0 |
HQ3-1 | 2 087.6 | 28.1 | 40.1 | 8.9 | 0.2 | 2.8 | 1.0 | 18.9 |
HQ4-1 | 2 091.0 | 36.2 | 42.3 | 8.0 | 2.1 | 1.5 | 0.3 | 9.6 |
HQ5-1 | 2 199.5 | 52.5 | 7.7 | 9.9 | 0.0 | 7.5 | 0.7 | 21.7 |
HQ6-4 | 2 259.1 | 67.1 | 9.1 | 2.9 | 0.7 | 4.3 | 1.4 | 14.5 |
HQ6-7 | 2 264.0 | 58.0 | 11.6 | 5.8 | 0.3 | 3.0 | 0.9 | 20.4 |
HQ7-1 | 2 269.1 | 43.0 | 18.4 | 8.3 | 3.1 | 3.2 | 2.0 | 22.0 |
HQ8-3 | 2 206.1 | 49.1 | 12.0 | 2.7 | 0.4 | 6.2 | 1.9 | 27.7 |
HQ10-1 | 2 241.3 | 39.2 | 27.0 | 6.4 | 1.3 | 3.2 | 0.6 | 22.3 |
HQ11-1 | 2 241.6 | 30.3 | 44.6 | 8.6 | 0.1 | 2.0 | 0.7 | 13.7 |
HQ11-3 | 2 055.2 | 39.1 | 29.6 | 4.5 | 0.8 | 4.6 | 0.0 | 21.4 |
HQ12-1 | 2 099.6 | 30.8 | 32.7 | 8.9 | 0.0 | 11.7 | 0.0 | 15.9 |
HQ12-3 | 2 103.6 | 37.9 | 33.0 | 4.8 | 4.2 | 2.7 | 0.0 | 17.4 |
HQ13-1 | 2 105.9 | 38.4 | 33.5 | 6.4 | 0.3 | 3.2 | 0.2 | 18.0 |
HQ14-1 | 2 208.4 | 29.7 | 39.6 | 18.0 | 0.2 | 0.8 | 0.0 | 11.7 |
HQ14-2 | 2 212.8 | 37.1 | 45.6 | 7.4 | 0.1 | 0.9 | 0.0 | 8.9 |
HQ14-4 | 2 222.4 | 31.0 | 43.2 | 10.2 | 1.6 | 2.3 | 0.5 | 11.2 |
平均 | 40.8 | 29.0 | 7.3 | 1.2 | 3.8 | 0.6 | 17.4 |
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