鄂尔多斯盆地西峰地区长8砂岩微观非均质性的实验分析
Micro-anisotropic Experimental Analysis on Chang-8 Sandstone in Xifeng Area of Ordos Basin
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摘要: 通过真实砂岩微观模型实验,客观地分析了鄂尔多斯盆地西峰地区长8砂岩的微观非均质性特征,发现该区长8储层为致密型砂岩,直观地显示出长8砂岩储层具有很强的微观非均质性,砂岩的成岩作用和孔隙结构是影响鄂尔多斯盆地西峰地区长8砂岩储层微观非均质性的主要原因.在低渗透砂岩中,引起砂岩产生强烈的非均质性,而这些砂岩则形成长8砂岩储层的高渗带.Abstract: Based on the micro-model experiments for authentic sandstone samples, the micro-anisotropic characteristics of Chang-8 sandstones from the reservoirs in Xifeng area of Ordos Basin was analyzed. The results show that Chang-8 reservoirs behmg to compact-type sandstone with intense miero-anisotropy. And the diagenesis and porous structure of the sandstones are the main factors leading to the mieroanisotropy of Chang-8 reservoirs. The low permeable sandstones result in the intense mieroanisotropy of Chang-8 sandstone and form the high permeable zone of Chang-8 reservoirs.
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Key words:
- mieroanisotropy /
- authentic /
- sandstone /
- micro-model /
- experimental /
- analysis /
- Chang-8 /
- reservoir /
- Ordos /
- Basin /
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