| 鄂尔多斯盆地陕北地区长7砂岩储层成岩相特征研究 |
| |
| 引用本文： | 李渭,白薷,马瑶,李兆雨.鄂尔多斯盆地陕北地区长7砂岩储层成岩相特征研究[J].地质科学,2015,0(3):955-969. |
| |
| 作者姓名： | 李渭 白薷 马瑶 李兆雨 |
| |
| 作者单位： | 1. 大陆动力学国家重点实验室, 西北大学地质学系 西安 710069;
2. 中国地质调查局西安地质调查中心 西安 710054;
3. 延长石油研究院 西安 710075 |
| |
| 摘 要： | 在大量样品测试数据与野外地质调查综合分析的基础上, 对长7储层岩石学特征、物性、孔隙结构、成岩作用、成岩阶段和成岩相等进行了研究。结果表明: 研究区长7储层处于中成岩A~B期。压实作用及碳酸盐、粘土(高岭石、伊利石、伊蒙混层)矿物胶结和硅质胶结作用是造成储层原生孔隙丧失的主要原因; 绿泥石胶结抑制孔隙充填, 长石溶蚀作用使孔隙间的连通性得到改善, 储层物性得到提高。根据成岩作用类型、强度及其对储层物性的影响划分出6种成岩相, 其中压实相、碳酸盐胶结相、粘土矿物胶结相、石英加大相、浊沸石充填相不利于储层的发育, 而长石溶蚀相、绿泥石膜胶结相对储层物性改善起了重要作用。
|
| 关 键 词： | 陕北地区 长7储层 成岩作用 成岩相带 |
| 收稿时间： | 2014-08-10 |
| 修稿时间： | 2014-08-10; |
Diagenetic facies of the Chang 7 sandstone reservoir in the northern Shaanxi Province,Ordos Basin |
| |
| Li Wei,Bai Ru,Ma Yao,Li Zhaoyu.Diagenetic facies of the Chang 7 sandstone reservoir in the northern Shaanxi Province,Ordos Basin[J].Chinese Journal of Geology,2015,0(3):955-969. |
| |
| Authors: | Li Wei Bai Ru Ma Yao Li Zhaoyu |
| |
| Institution: | 1. State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069;
2. Xi'an Center of Geological Survey, China Geological Survey, Xi'an 710054;
3. Yanchang Petroleum Research Institute, Xi'an 710075 |
| |
| Abstract: | Based on the comprehensive large numbers of sample test data and field geological investigation, the Chang 7 reservoir have been worked on lithological characteristics, reservoir property and pore structure, diagenesis, diagenetic stage, diagenetic face in Shanbei. The results show that Chang 7 reservoir of the study area is in the stage A to B stage of middle diagenesis phase. Compaction and cementation by carbonate, clay(kaolinite, illite, illite/smectite)mineral and silicon are the main causes of the loss of reservoir primary porosity. Chlorite cementation can prevent the pore from being filled. Dissolution of feldspar improve connectivity between pores. Physical properties of reservoir are improved by these. Six types of diagenetic facies are divided based on diagenesis and their effect on the reservoir quality, Compaction facies, carbonate cementation facies, clay mineral cementation facies and quartz overgrowth facies are unfavorable to the development of high quality reservoir. On the contrary, feldspar dissolution facies and chlorite cementation facies play an important role in improving the physical properties of reservoir. |
| |
| Keywords: | Shanbei area Chang 7 reservoir Diagenesis Diagenetic facies |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《地质科学》浏览原始摘要信息 |
| 点击此处可从《地质科学》下载免费的PDF全文 |
|
