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| 特低-超低渗透砂岩储层微观孔喉特征与物性差异 | |
| 引用本文： | 高辉,孙卫,费二战,齐银,李达.特低-超低渗透砂岩储层微观孔喉特征与物性差异[J].岩矿测试,2011,30(2):244-250. |
| 作者姓名： | 高辉 孙卫 费二战 齐银 李达 |
| 作者单位： | 1. 西安石油大学石油工程学院,陕西,西安,710065 2. 西北大学地质学系,陕西,西安,710069 3. 中国石油长庆油田分公司第三采油厂,宁夏,银川,750006 4. 中国石油长庆油田分公司超低渗透油藏研究中心,陕西,西安,710021 5. 中国石油长庆油田分公司苏里格气田研究中心,陕西,西安,710018 |
| 基金项目： | 陕西省教育厅2010年科学研究计划资助，"十一五"国家科技支撑计划项目资助 |
| 摘 要： | 为揭示特低-超低渗透砂岩储层微观孔隙结构与物性差异的关系,利用物性分析、铸体薄片、电镜扫描和高压压汞技术对鄂尔多斯盆地延长组3个典型的特低-超低渗透砂岩储层岩芯样品进行了实验测试.研究结果表明,特低-超低渗透砂岩储层喉道类型多样;但整体细小,对渗透率起主要贡献的较大喉道含量小是其物性较差的主要原因,同时微裂缝的发育也加剧了物性差异.统计对比发现,孔喉的分选系数在2.0～3.0,变异系数在0.15～0.3,对渗透率贡献相对较大.可见,储层物性是多种因素共同影响的综合反映,不同类型孔隙、喉道组成的储集空间,渗透率存在较大差异,物性差异正是孔喉特征差异的一种具体表现. |
| 关 键 词： | 微观孔喉特征 物性差异 微观非均质性 特低-超低渗透砂岩储层 鄂尔多斯盆地 |
| 收稿时间： | 2010/4/13 0:00:00 |
| 修稿时间： | 2010/8/16 0:00:00 |
The Relationship between Micro-Pore Throat Characteristics and Physical Property Difference in an Extra-Ultra Low Permeability Sandstone Reservoir |
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| GAO Hui,SUN Wei,FEI Er-zhan,QI Yin and LI Da.The Relationship between Micro-Pore Throat Characteristics and Physical Property Difference in an Extra-Ultra Low Permeability Sandstone Reservoir[J].Rock and Mineral Analysis,2011,30(2):244-250. | |
| Authors: | GAO Hui SUN Wei FEI Er-zhan QI Yin and LI Da |
| Institution: | College of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China;Department of Geology, Northwest University, Xi'an 710069, China;No.3 Oil Production Plant of Changqing Oilfield Company, Petrochina, Yinchuan 750006, China;Ultra Low Permeability Reservoir Research Center of Petrochina Changqing Oilfield Company, Xi'an 710021, China;Sulige Gas Field Research Center of Petrochina Changqing Oilfield Company, Xi'an 710018, China |
| Abstract: | In order to study the relationship between micro-pore throat characteristics and physical property difference,drill core samples of extra-ultra low permeability sandstone from a reservoir in the Yanchang group of the Ordos Basin were selected for physical property analysis,cast section,SEM and mercury penetration techniques.The results indicate that throat type in an extra-ultra low permeability sandstone reservoir is versatile and minute.The content of major throat which makes a dominant contribution to pe... |
| Keywords: | micro-pore throat characteristics physical property difference micro-heterogeneity extra-ultra low permeability sandstone reservoir Ordos basin |
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