| 陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖 |
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| 引用本文： | 郑希民,宋广寿,王多云,李凤杰,王志坤,李树同,王峰,刘自亮.陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖[J].沉积学报,2003,21(2):272-277. |
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| 作者姓名： | 郑希民 宋广寿 王多云 李凤杰 王志坤 李树同 王峰 刘自亮 |
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| 作者单位： | 1.中国科学院兰州地质研究所 兰州 730000; |
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| 基金项目： | 中国科学院资环局知识创新工程重要方向项目资助 |
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| 摘 要： | 通过对延长统长8段厚层砂岩沉积岩石学和层序地层学研究,将其分为两类,一类是由多期单一成因的分流河道砂岩叠加构成;另一类是由三角洲前缘的水下分流河道、河口坝、坝顶席状砂和滑塌砂等多种沉积微相以不同的组合形式叠加构成。首次提出在“高可容纳空间,高沉积通量”背景下,只有经过特殊水动力条件(淘洗)改造后形成的被我们称之为坝顶席状砂的砂岩才有可能成为相对高孔、高渗的优质储层。
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| 关 键 词： | 陕甘宁盆地 厚层砂体 沉积微相 席状砂 |
| 文章编号： | 1000-0550(2003)02-0272-06 |
| 收稿时间： | 2003-01-27 |
| 修稿时间： | 2003年1月27日 |
Sedimentary Anatomy of Thick Anisotropic Sandstones for Chang 8 Oil Formation in Longdong Area , Shaan-Gan-Ning Basin |
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| ZHENG Xi-min,SONG Guang-shou,WANG Duo-yun,LI Feng-jie,WANG Zhi-kun,LI Shu-tong,WANG Feng,LIU Zi-liang.Sedimentary Anatomy of Thick Anisotropic Sandstones for Chang 8 Oil Formation in Longdong Area , Shaan-Gan-Ning Basin[J].Acta Sedimentologica Sinica,2003,21(2):272-277. |
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| Authors: | ZHENG Xi-min SONG Guang-shou WANG Duo-yun LI Feng-jie WANG Zhi-kun LI Shu-tong WANG Feng LIU Zi-liang |
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| Institution: | 1.Lanzhou Institute of Geology, Chinese Academy of Sciences,Lanzhou 730000;2.Second Oil Production Factory, Chang-Qing Corporation, Qingyang Gansu 745100 |
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| Abstract: | The thick sandstones in Chang 8 oil Formation of Yanchang group may be divided into two types by the research on sedimentary petrology and sequence stratigraphy. One is made up of single genetic distributary channel sandstones that is stacked with multiple stages sandstone. The other is consist with many microfacies , including underwater distributary channel, river mouth bar, sheet sand over mouth bar and slump sandstone. They pile up as thick sandbody by different stacking patterns. It has been first proposed that only the sandstone called as sheet sand over mouth bar may become high-quality reservoir with relative high porosity and permeability under the background of high accommodations and high sediment alimentations. |
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| Keywords: | Shaan-Gan-Ning Basin thick sandbody sedimentary microfacies sheet sand |
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