| 华庆地区长6 油层组黏土矿物类型及其对储层物性的影响 |
| |
| 引用本文： | 周桦,黄思静,兰叶芳. 华庆地区长6 油层组黏土矿物类型及其对储层物性的影响[J]. 岩性油气藏, 2012, 24(3): 66-73. DOI: 10.3969/j.issn.1673-8926.2012.03.013 |
| |
| 作者姓名： | 周桦 黄思静 兰叶芳 |
| |
| 作者单位： | 1. 成都理工大学沉积地质研究院，四川成都610059； 2.成都理工大学油气藏地质及开发工程国家重点实验室，四川成都610059 |
| |
| 基金项目： | 国家科技重大专项“鄂尔多斯盆地中生界延长组储层特征研究”(编号:2008ZX05001-004-003)资助 |
| |
| 摘 要： | 在薄片、X 射线衍射和扫描电镜分析基础上，研究了鄂尔多斯盆地华庆地区长6 油层组砂岩中黏土 矿物的主要类型、赋存方式及其对储层物性的影响。结果表明：长6 油层组砂岩中的黏土矿物主要为绿 泥石、伊利石和混层伊利石/蒙皂石，黏土矿物总量平均为4.55%；自生绿泥石主要以孔隙衬里方式产出， 对深埋藏砂岩的储集空间具有显著的保护作用；伊利石和混层伊利石/蒙皂石主要以孔隙桥接或孔隙充填 方式产出，其大量存在会堵塞孔隙喉道、减小孔喉半径，从而对储层物性产生负面影响；高岭石在华庆地 区长6 油层组砂岩中不发育，是由于高含量杂基导致长6 油层组砂岩在酸性流体出现之前已基本完成压 实作用，且长7 烃源岩有机质演化过程中产生的酸性流体对其影响十分有限，使其缺乏足够的粒间孔隙 和活跃的酸性流体沉淀高岭石。
|
| 关 键 词： | 低渗透 非达西流 非达西渗流湍流系数 雷诺数 层流 湍流 |
Types of clay minerals and its effects on reservoir properties of Chang 6 oil reservoir set in Huaqing area,Ordos Basin |
| |
| ZHOU Hua,HUANG Sijing,LAN Yefang. Types of clay minerals and its effects on reservoir properties of Chang 6 oil reservoir set in Huaqing area,Ordos Basin[J]. Northwest Oil & Gas Exploration, 2012, 24(3): 66-73. DOI: 10.3969/j.issn.1673-8926.2012.03.013 |
| |
| Authors: | ZHOU Hua HUANG Sijing LAN Yefang |
| |
| Affiliation: | 1. Institute of Sedimentary Geology， Chengdu University of Technology， Chengdu 610059， China； 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation， Chengdu University of Technology， Chengdu 610059， China |
| |
| Abstract: | Based on thin section analysis,X-ray diffraction and scanning electronic microscope analyses,this paper studied the types,occurrence of clay minerals and its influence on reservoir properties of Chang 6 oil reservoir set in Huaqing area.The result shows that the clay minerals in Chang 6 oil reservoir set mainly consist of chlorite,illite and illite/smectite mixed layer,and the average content of clay minerals is approximately 4.55%.Authigenic chlorite commonly occurs as pore-lining cement,which is beneficial to protect porosity of deeply buried sandstones.The occurrence of illite and illite/smectite mixed layer is pore bridging or pore filling,which will block up pore spaces and reduce throat radius,and have negative effect on sandstone reservoir.Authigenic kaolinite in Chang 6 oil reservoir set in Huaqing area is not developed.High matrix content makes the reservoir experience intense compaction earlier than acidic fluid,and the influence of acidic fluid from Chang 7 hydrocarbon rocks is limited for Chang 6 oil reservoir set,both of them result in the lack of intergranular volume and active acidic fluid for kaolinite. |
| |
| Keywords: | clay minerals authigenic chlorite X-ray diffraction physical properties Chang 6 oil reservoir set Ordos Basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩性油气藏》浏览原始摘要信息 |
|
点击此处可从《岩性油气藏》下载全文 |
