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天然气地球科学 ›› 2011, Vol. 22 ›› Issue (4): 576–581.doi: 10.11764/j.issn.1672-1926.2011.04.576

• 天然气地质学 • 上一篇    下一篇

鄂尔多斯盆地胡尖山地区上三叠统延长组长4+5—长6段储层特征及其与石油运聚关系

高岗, 韩永林, 范泓澈, 王银会, 梁新伟, 辛红刚   

  1. 1.中国石油大学油气资源与探测国家重点实验室,北京 102249；
    2.长庆油田公司勘探开发研究院，陕西 西安 710021；
    3.斯伦贝谢公司北京总部，北京 100015
  • 收稿日期:2011-01-06 修回日期:2011-06-07 出版日期:2011-08-10 发布日期:2011-08-10
  • 通讯作者: 高岗gaogang2819@sina.com E-mail:gaogang2819@sina.com
  • 作者简介:高岗(1966-)，男，陕西高陵人，副教授,博士,主要从事油气地质与勘探科研与教学工作.

Reservoir Characteristics of Member 4+5 and 6 of Yangchang Formation from Upper Triassic in Hujianshan Area,Ordos Basin and Their Relationship with Oil Accumulation

GAO Gang, HAN Yong-Lin, FAN Hong-Che, WANG Yin-Hui, LIANG Xin-Wei, XIN Hong-Gang   

  1. 1.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China;
    2.Research Institute of Exploration and Development of Changqing Oilfield Company,Xi′an  710021,China;
    3.Schlumberger Technologies(Beijing)Ltd.,Beijing 100015,China
  • Received:2011-01-06 Revised:2011-06-07 Online:2011-08-10 Published:2011-08-10

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摘要：

从储集层地质发育特征、岩石组成与成岩作用、物性与孔隙类型等方面，分析了鄂尔多斯盆地胡尖山地区上三叠统延长组长6—长4+5段砂岩储集层的特殊性，对储集层特征与石油聚集的关系进行了探讨。砂体主要发育于三角洲前缘亚相中的水下分流河道微相中，具有较强的非均质性。砂岩以长石岩屑细砂岩为主，成岩作用较强，物性总体较低，多为低孔低渗—致密储集层，有效孔隙类型主要为粒间孔、溶蚀孔隙和晶间孔。石油在不同物性的储集层中均有聚集，含水层多具有较高的孔隙度和渗透率，所以，储集层本身特征对石油的聚集不起决定性作用，还必须要有一定厚度的物性较好的储集层\,输导通道与油源的良好配置才可能形成油藏。

关键词: 石油聚集, 砂岩储集层, 低孔低渗, 鄂尔多斯盆地

Abstract:

From the reservoir geological characteristics,rock composition and diagenesis,physical properties,pore types and so on,this paper analyzes the particularity of sandstone reservoirs in the member 6 to the member 4+5 of the upper Triassic Yanchang Formation from the Hujianshan area of Ordos basin,and discusses the reservoir characteristics and their relationship with oil accumulation.The sand body with strong heterogeneity develops in submarine distributary channel of delta front.The sandstones are mainly feldspathic lithic fine sandstone with strong diagenesis and low physical property values as a whole.Most of the reservoirs are low porosity and low permeability\|tight and the effective pore types are mainly intergranular pore,dissolution pore and intracrystalline pore.Oil accumulates in the reservoir layers with different physical properties and many aquifers have high porosity and permeability.So reservoir characteristics itself can not afford a decisive role in the petroleum gathering.There must have a good assemblage of higher physical property value reservoir,conduct pathway and oil surce can form oil pool.

Key words: Accumulation of oil, Sandstone reservoir, Low porosity and low permeability, Ordos basin.

中图分类号: 

  • TE122.2

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