石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (3): 364-374.doi: 10.11743/ogg20120305

• 目次 • 上一篇    下一篇

黔北地区下寒武统黑色页岩储层特征及其影响因素

李娟1, 于炳松1, 张金川2, 李玉喜3, 武景淑1   

  1. 1. 中国地质大学 地质过程与矿产资源国家重点实验室, 北京 100083;
    2. 中国地质大学 能源学院, 北京 100083;
    3. 国土资源部 油气资源战略研究中心, 北京 100034
  • 收稿日期:2011-09-09 修回日期:2012-05-10 出版日期:2012-06-28 发布日期:2012-07-10
  • 第一作者简介:李娟(1990-),女,硕士研究生,油气储层预测与评价和地球化学。
  • 基金项目:

    国土资源部油气资源战略研究中心项目(2009GYXQ15-03)。

Reservoir characteristics and their influence factors of the Lower Cambrian dark shale in northern Guizhou

Li Juan1, Yu Bingsong1, Zhang Jinchuan2, Li Yuxi3, Wu Jingshu1   

  1. 1. State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Beijing 100083, China;
    2. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
    3. Research Center for Oil and Gas Resource Strategy, Ministry of Land and Resources, Beijing 100034, China
  • Received:2011-09-09 Revised:2012-05-10 Online:2012-06-28 Published:2012-07-10

PDF (PC)

1391

被引次数

121

摘要：

为了评价黔北地区下寒武统牛蹄塘组黑色页岩的储气性能,对黔北下寒武统牛蹄塘组的20余个露头剖面进行了系统采样和岩石物性、扫描电镜、压汞分析、比表面和孔径等分析测试。初步研究结果表明:黔北地区下寒武统页岩中石英含量平均为56.3%,粘土矿物平均含量为30.5%,有效孔隙度平均为8.24%,渗透率平均为0.127×10-3 μm2,具有低渗致密的储层特征;孔径分布集中在4 nm左右,本区页岩孔隙以中孔为主。孔隙体积与石英、粘土矿物和有机碳含量等的相关性分析表明,石英含量与微孔和中孔体积成负相关,而与宏孔成弱的正相关关系;粘土物质则正相反,与微孔和中孔体积成正相关,而与宏孔成弱的负相关关系;有机碳含量和中孔体积、宏孔体积成一定的正相关性;镜质体反射率与宏孔体积成弱的正相关性。

关键词: 孔隙, 储层特征, 黑色页岩, 牛蹄塘组, 寒武系, 黔北地区

Abstract:

In order to assess the gas potential of the dark shale of the Lower Cambrian Niutitang Formation in the northern part of Guizhou,samples were collected from 20 outcrop cross sections of the Lower Cambrian Niutitang Formation in the northern part of Guizhou and many experiment tests such as physical property,SEM,mercury porosimetry,specific surface and pore size were conducted.Preliminary study results show that the average content of quartz and clay minerals are 56.3% and 30.5% and the effective porosity and permeability are 8.24% and 0.127×10-3 μm2 respectively.Pore sizes cluster around 4.0 nm.The pores are dominated by mesopores.The analysis of the relation between pore volume and quartz content,clay mineral contents and TOC shows that the content of quartz is negatively correlated with the volumes of micropore and mesopore,but slightly positively correlated with macropore;clay mineral contents are just the opposite to quartz content;TOC is positively correlated with mesopore and macropore to some extent;and vitrinite reflectance has a weak positive correlation with macropore.

Key words: pore, reservoir characteristics, dark shale, Niutitang Formation, Cambrian, northern Guizhou

中图分类号: