| 鄂尔多斯盆地镇北地区长3砂岩的成岩作用及其对储层的影响 |
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| 引用本文： | 刘林玉,王震亮,张龙.鄂尔多斯盆地镇北地区长3砂岩的成岩作用及其对储层的影响[J].沉积学报,2006,24(5):690-697. |
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| 作者姓名： | 刘林玉 王震亮 张龙 |
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| 作者单位： | 西北大学大陆动力学重点实验室,西北大学地质系,西安,710069 |
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| 基金项目： | 国家973项目(2003CB214605)，西北大学科研基金(OKYQDF014)资助 |
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| 摘 要： | 根据砂岩薄片、铸体薄片、扫描电镜、X-衍射分析,研究了鄂尔多斯盆地西峰油田镇北地区长3储层的成岩作用特征,认为该区长3储层处于晚成岩A期阶段,压实作用和胶结作用强烈地破坏了砂岩的原生孔隙结构,溶蚀作用和破裂作用则有效地改善了砂岩的孔隙结构。该区长3储层发育溶蚀作用相、压实作用相、胶结作用相和自生绿泥石胶结残余孔隙相,储层成岩相发育状况决定了孔隙结构的发育特征。发育次生孔隙相和残余孔隙相的砂岩具有较好的孔隙结构,孔渗较高;压实作用相和胶结作用相发育的砂岩具有很差的孔隙结构,孔渗很低。
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| 关 键 词： | 成岩作用 成岩相 孔隙结构 镇北地区 鄂尔多斯盆地 |
| 文章编号： | 1000-0550（2006）05-0690-08 |
| 收稿时间： | 2005-12-16 |
| 修稿时间： | 2006-03-09 |
Sandstone Diagenesis and the Influence on Chang 3 Reservoir of Zhenbei Area,Ordos Basin |
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| LIU Lin-yu,WANG Zhen-liang,ZHANG Long.Sandstone Diagenesis and the Influence on Chang 3 Reservoir of Zhenbei Area,Ordos Basin[J].Acta Sedimentologica Sinica,2006,24(5):690-697. |
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| Authors: | LIU Lin-yu WANG Zhen-liang ZHANG Long |
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| Abstract: | Based on the data analysis of casting lamella,scan electron microscope and X-ray diffractions etc,the diagenesis include compaction,cementation,dissolution and fracturing,which belong to the "A" late diagenesis on Chang 3 reservoirs in Zhenbei area of oilfield in Ordos Basin.The compaction and cementation destroy the primary-texture of pore intensively,dissolution and fracturing change the pore structure effectively.The Chang 3 reservoirs in Zhenbei area develop dissolution facies,compaction facies,cementation facies and antigenic chlorite cementation residual pores facies,which impact the pore character of reservoirs.The sandstone develops secondary-pore facies and residual pores facies that have the better pore texture.The sandstone porosity and permeability are better;the pelitic impurity compaction facies and carbonate cementation facies develop in sandstone that have the lesser pore,so that the sandstone porosity and permeability are very poor in this area. |
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| Keywords: | diagenesis lapidofacies pore texture Zhenbei area Ordos Basin |
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