...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AAPG Bulletin >The upper Paleozoic coalbed methane system in the Qinshui basin, China
【24h】

The upper Paleozoic coalbed methane system in the Qinshui basin, China

机译：沁水盆地上古生界煤层气系统

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 coalbed methane resource is very abundant in Qinshui basin (3.28 x 1012 m3; 114 tcf). The investigation on the upper Paleozoic coalbed methane system is a guide to the exploration and development of coalbed methane. The upper Paleozoic coalbed methane system in the Qinshui basin is sealed by a low-permeability roof and floor strata comprising mudstone, siltstone, and bauxite of the Carboniferous Benxi Formation and the Permian Shanxi and Xiashihezi formations. The overburden is the Lower Permian Xiashihezi Formation and the Upper Permian, Triassic, and Middle Jurassic clastic deposits. The source and reservoir rocks are the Carboniferous–Permian coal seams. The hydrocarbon generation of the source rocks reached its first peak in the Late Triassic. The highest maturity was about Ro = 1.2% under a normal paleogeothermal gradient (2–3°C/100 m; 1.1–1.7°F/100 ft). A tectonic thermal event during the Jurassic and Cretaceous Yanshanian orogeny enhanced the coal maturity and caused a second peak of hydrocarbon generation. Varying igneous intrusions caused the coal maturity to be higher in the southern, northern, and eastern parts of the Qinshui basin instead of the central and western parts. The highest maturity was greater than Ro = 4% in the Jincheng area. The migrated thermogenetic coalbed methane accumulated in the reservoirs in which abnormally high reservoir pressure exists locally under the hydrodynamic drive. Because of the different hydrodynamic background and sealing condition, the distribution of coalbed methane content is inhomogeneous. The reservoir is undersaturated with gas in most areas. Based on the coalbed methane system investigation, we assessed the coalbed methane producibility in different parts of the Qinshui basin, and the major producibility area is in the southern part of the basin.
机译：沁水盆地 的煤层气资源非常丰富（3.28 x 10 12 m 3 ； 114 tcf）。上古生界煤层气系统的研究为煤层气勘探开发提供了指导。沁水盆地上古生界煤层气系统 被低渗透率的顶板和 地层组成，地层由泥岩，粉砂岩和 的铝土矿组成石炭系本溪组，二叠系山西和 下什河子组。上覆岩为下二叠统下石河子 地层以及上二叠统，三叠纪和中侏罗统 碎屑矿床。烃源岩和储集层是石炭系-二叠纪 煤层。烃源岩的生烃量达到了 在三叠纪晚期的第一个峰值。在正常的古地热梯度（2–3°C / 100 m; 1.1–1.7°）下，最高成熟度约为 ，R o = 1.2％ F / 100英尺）。 侏罗纪和白垩纪燕山期造山过程中的构造热事件增强了 煤的成熟度，并导致了第二次生烃高峰期。沁水 盆地南部，北部和东部的煤炭成熟度 要高于中部和西部。晋城市地区最高的 成熟度大于R o = 4％。 在气藏 中局部存在异常高的储层压力的储层 中聚集的热成因煤层气。由于不同的流体动力背景和封闭条件，煤层气中甲烷含量的分布不均匀。在大多数地区，气藏 都不饱和。根据煤层气系统 的研究，我们评估了沁水盆地不同地区的煤层气可生产性 ，主要产油区 位于盆地南部。

著录项

  • 来源
    《AAPG Bulletin》 |2005年第1期|00000081-00000100|共20页
  • 作者

    Xianbo Su; Xiaoying Lin; Mengjun Zhao; Yan Song; Shaobo Liu;

  • 作者单位

    Henan Polytechnic University, Jiaozuo City, Henan 454000, People's Republic of Chinasuxianbo@263.net;

    Henan Polytechnic University, Jiaozuo City, Henan 454000, People's Republic of Chinalxy2002199@126.com;

    Central Laboratory, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 10083, Chinazhaomj@petrochina.com.cn;

    Central Laboratory, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 10083, Chinasya@petrochina.com.cn;

    Central Laboratory, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 10083, Chinalsb@petrochina.com.cn;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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