松辽盆地松科1井明水组砂岩粘土膜特征及油气地质意义

伏美燕; 张哨楠; 丁晓琪; 廖齐明; 熊迪; 朱志良

doi:10.11781/sysydz201206585

松辽盆地松科1井明水组砂岩粘土膜特征及油气地质意义

doi: 10.11781/sysydz201206585

1.
成都理工大学能源学院, 成都, 610059
2. 西南石油大学资源与环境学院, 成都, 610500
3. 中国石油川庆钻探工程公司地质勘探开发研究院, 成都, 610213

基金项目: 国家自然科学基金项目(40972098)资助

详细信息

作者简介:
伏美燕(1982- ),女,博士,助理研究员,从事储层地球化学与储层评价研究.E-mail:fumeiyan08@cdut.cn

中图分类号: TE122.2⁺3
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出版历程
- 收稿日期: 2012-06-19
- 修回日期: 2012-09-10
- 刊出日期: 2012-11-28

Characteristics and petroleum geologic significances of clay rims in sandstones of Mingshui Formation, well Songke 1, Songliao Basin

1.
College of Energy Resources, Chengdu University of Technology, Chengdu, Sichuan 610059, China
2. School of Resources and Environment, Southwest Petroleum University, Chengdu, Sichuan 610500, China
3. Research Institute of Geological Exploitation and Development, Chuanqing Drilling Engineering Company, PetroChina, Chengdu, Sichuan 610213, China

摘要

摘要: 粘土膜是影响砂岩储集性的因素之一。通过铸体薄片鉴定、X射线衍射分析、扫描电镜和能谱分析,对松辽盆地松科1井明水组砂岩中粘土膜特征进行了研究。明水组砂岩中粘土膜的矿物成分为含钾和铁的蒙脱石,钾和铁含量随埋藏深度增大而增加。本研究中的粘土膜为原生粘土膜,可分为继承性粘土膜和渗滤粘土。粘土膜主要分布在滨湖砂坪的细砂岩和粉砂岩中,在三角洲前缘水下分流河道细—中砂岩中几乎不发育。粘土膜的发育主要受到物源、古气候、颗粒粒度和水动力条件的影响。粘土膜的成因类型、矿物成分和晶体形态对于砂岩孔隙的保存有不同程度的影响,因而研究粘土膜的类型、成分和分布规律对碎屑岩储层评价具有重要意义。
- 渗滤粘土 /
- 继承性粘土膜 /
- 明水组 /
- 松科1井 /
- 松辽盆地
Abstract: Clay rim is one of the influencing factors of sandstone properties.The characteristics of clay rims in sandstones from the Mingshui Formation in well Songke 1 in the Songliao Basin have been studied by means of casting thin section observation,XRD,SEM and EDS.The clay rims in sandstones from the Mingshui Formation are composed of montmorillonites with potassium and iron,and the contents of potassium and iron increase as burial depth increases.The clay rims are original ones,and can be further divided into inherited and infiltrated clay rims.They mainly distribute in fine-grained and silt-grained sandstones in shore sand platform,and are poorly developed in fine-grained and medium-grained sandstones in subaqueous distributary channels in delta fronts.The generation of clay rims is mainly controlled by source,climate,granularity and hydrodynamic condition.The genetic type,mineral composition and crystal feature of clay rims all influence the preservation of porosity.As a result,the studies of the composition and distribution of clay rims have an important significance for clastic rock reservoir evaluation.
- infiltrated clay /
- inherited clay rim /
- Mingshui Formation /
- well Songke 1 /
- Songliao Basin

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