...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geoscience journal >Comparative study on the Lower Silurian Longmaxi marine shale in the Jiaoshiba shale gas field and the Pengshui area in the southeast Sichuan Basin, China
【24h】

Comparative study on the Lower Silurian Longmaxi marine shale in the Jiaoshiba shale gas field and the Pengshui area in the southeast Sichuan Basin, China

机译：嘉石页岩气田下硅子龙米西亚海岸页岩的比较研究与四川盆地东南部彭水区

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 Jiaoshiba shale gas field and Pengshui area are both located in the southeast Sichuan Basin with only 100 km apart. Although these two areas obtained shale gas flow from the Lower Silurian Longmaxi marine shale, there is a huge difference of production in these two areas where the Jiaoshiba shale gas field is more productive than the Pengshui area. In order to figure out the reason that caused this difference, this study analyzed the Longmaxi marine shale in these two areas by using drilling cores, and mineralogical and geochemical data. The results show that the Jiaoshiba shale gas field has a higher quality shale reservoir (higher content of quartz, higher porosity, higher permeability and higher TOC (Total Organic Carbon)) in the Lower Silurian Longmaxi Formation than that of the Pengshui area. The Lower Silurian Longmaxi marine shale in the Jiaoshiba shale gas field contains a higher total gas content (3.65 m(3)/ton in average) than that of the Pengshui area (1.19 m(3)/ton in average). Through structure analysis, this study found that the Jiaoshiba shale gas field and the Pengshui area located in the different tectonic units. The Jiaoshiba shale gas filed is located in the East Sichuan fold belt (wide spaced anticlines area) at the west side of the Qiyue mountain fault where less fractures are developed and the pressure coefficient is more than 1.5, resulting in much more free gas preserved in the shale reservoirs in the Lower Silurian Longmaxi Formation (the ratio of free gas content and absorbed gas content is 1.6), while the Pengshui area is located in the Hunan-Hubei-Guizhou thrust belt area at the east side of the Qiyue mountain fault where much more fractures are developed and the pressure coefficient is less than 1.0, leading to less free gas preserved in the Longmaxi marine shale (the ratio of free gas content and absorbed gas content is 0.6), that is why the shale reservoir in the Pengshui area has a lower total gas content than that in the Jiaoshiba shale gas field.
机译：胶木页岩气田和彭水地区均位于四川盆地东南部，仅100公里。虽然这两个领域获得了从下硅脂湖海洋页岩的页岩气流，但这两个领域的生产差异巨大差异，果石塔气田比彭水地区更具成效。为了弄清楚引起这种差异的原因，本研究通过使用钻井核心和矿物学和地球化学数据分析了这两个领域的龙马西海洋页岩。结果表明，下硅藻土形成的焦化储层储层储层高于较高的硅藻土储层（较高的石英，孔隙率，较高的渗透率和较高的TOC（总有机碳））。胶木叶片气田的下硅兰龙米星海洋页岩含有较高的总煤气含量（平均3.65米（3）/吨）（平均平均1.19米（3）/吨）。通过结构分析，本研究发现，胶木页岩气田和位于不同构造单元的彭水区。胶印页岩气归档位于齐悦山故障西侧的东四川折叠带（宽间距边缘区域），其中开发了较少的骨折，压力系数超过1.5，导致保存更多的空气下硅藻土的页岩储层（游离气体含量和吸收气体含量的比例为1.6），而彭水地区位于湖南 - 贵州的北湖北 - 贵州推力皮带区，在其中的东侧开发了更多的骨折，压力系数小于1.0，导致龙际海洋页岩中保存的空气较少（自由气体含量和吸收气体含量为0.6），这就是彭水地区的页岩储层为何总气体含量较低，而不是胶石塔气田。

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