• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural gas science and engineering >Pore characteristics of organic-rich shales with high thermal maturity: A case study of the Longmaxi gas shale reservoirs from well Yuye-1 in southeastern Chongqing, China
【24h】

Pore characteristics of organic-rich shales with high thermal maturity: A case study of the Longmaxi gas shale reservoirs from well Yuye-1 in southeastern Chongqing, China

机译：热成熟度高的富含有机质页岩的孔隙特征：以重庆东南地区Yuye-1井的Longmaxi气页岩储层为例

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Lower Silurian Longmaxi Formation marine shales, with high organic matter abundance and high thermal maturity, are regarded as the main shale gas reservoirs in southern China. The pore characteristics of the Longmaxi shales were investigated using samples collected from well Yuye-1 in southeastern Chongqing, China. The total organic carbon (TOC) contents of the samples range from 0.7 to 2.29 wt. %, and the vitrinite reflectance (Ro) values range from 1.61 to 2.26%. The Longmaxi marine shales are rich in quartz and clay, with average contents of 39.40 wt. % and 33.1 wt. %, respectively. Image analysis allows us to visualize the pore types and networks in the shale samples. Field emission scanning electron microscopy (FESEM), which provides high-resolution images, was used to describe the pore types and structures. Both observation and statistical results indicate that nearly all of the pores are mesopores (2-50 nm) and macropores (>50 nm), and the vast majority are mesopores, which account for approximately 70% of the total pore volume. Interparticle (InterP) pores, intraparticle (IntraP) pores, and organic matter (OM) pores are the three main pore types, along with some microfracture pores. OM pores are usually meso- or macropores, and account for a large proportion (approximately 47.87%) of the pores in our samples. Pores related to quartz are macropores, while pores related to clay aggregates are usually meso- or micropores which are rare due to severe compaction. Regression analyses suggest that the TOC content strongly influences the development of pores, especially for macropores. The quartz content also contributes to the development of macropores, while the clay minerals content has a minor effect on the development of mesopores. (C) 2015 Elsevier B.V. All rights reserved.
机译：下志留纪龙马溪组海相页岩具有较高的有机质含量和较高的热成熟度，被认为是中国南部的主要页岩气藏。利用从重庆东南部的Yuye-1井收集的样品研究了Longmaxi页岩的孔隙特征。样品的总有机碳（TOC）含量为0.7至2.29 wt。 ％，并且镜质体反射率（Ro）值的范围为1.61至2.26％。 Longmaxi海洋页岩富含石英和粘土，平均含量为39.40 wt.。 ％和33.1 wt。 ％， 分别。图像分析使我们能够可视化页岩样品中的孔隙类型和网络。提供高分辨率图像的场发射扫描电子显微镜（FESEM）用于描述孔的类型和结构。观察和统计结果均表明，几乎所有的孔都是中孔（2-50 nm）和大孔（> 50 nm），绝大多数是中孔，约占总孔体积的70％。颗粒间（InterP）孔，颗粒内（IntraP）孔和有机物（OM）孔是三种主要的孔类型，还有一些微裂缝孔。 OM孔通常是中孔或大孔，并在我们的样品中占很大比例（约47.87％）。与石英有关的孔是大孔，而与粘土聚集体有关的孔通常是中孔或微孔，由于严重压实而很少见。回归分析表明，TOC含量强烈影响孔的发育，特别是对于大孔。石英含量也有助于大孔的发展，而粘土矿物含量对中孔的发展影响较小。 （C）2015 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号