• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Petroleum exploration and development >Geological characteristics and resource potential of lacustrine shale gas in the Sichuan Basin, SW China
【24h】

Geological characteristics and resource potential of lacustrine shale gas in the Sichuan Basin, SW China

机译：中国四川盆地湖相页岩气的地质特征和资源潜力

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The geochemical characteristics of shale such as total organic content, type and maturity, shale sedimentary environment, geological characteristics, and scale of development were analyzed to study the geological characteristics and resource potential of lacustrine shale in the Lower Jurassic Ziliujing Formation in the Sichuan Basin. The Lower Jurassic Ziliujing Formation lacustrine shale is mainly developed in the Dongyuemiao and Da'anzhai members. The geochemical analysis of the organic carbon content, kerogen macerals, biomarker compounds and vitrinite reflectance of the shale samples showed that the total organic content is generally over 1.0%; the main organic type is II1-III, but type II1is in the central part of the basin; the vitrinite reflectance value (Ro) is 1.05%–1.82%, thus the shale has a strong ability to generate gas. The thickness of the distributed Ziliujing shale is approximately 40–150 m, the average porosity is 1%–5%, and the permeability is 0.001×10?3–0.100×10?3μm2. The lacustrine shale consists of different assemblages: pure shale, shale with imbedded lime band, and shale with thin-middle shell limestone. The shale has high quartz content, favorable for exploitation of shale gas; the lime band and the shelly limestone, which are developed in the shale can further improve the shale economic recoverability. The estimated shale gas resources of the Ziliujing lacustrine shale by volumetric method is about 3.8×1012–8.7×1012m3.
机译：分析了页岩的地球化学特征，如总有机物含量，类型和成熟度，页岩沉积环境，地质特征和发育规模，以研究四川盆地下侏罗统自流井组湖相页岩的地质特征和资源潜力。下侏罗纪自流井组湖相页岩主要发育在东岳庙和大安寨段。对页岩样品中有机碳含量，干酪根显微组织，生物标志物化合物和镜质体反射率的地球化学分析表明，总有机物含量通常超过1.0％。主要有机类型为II1-III，但II1类型位于盆地的中部。镜质体反射率值（Ro）为1.05％–1.82％，因此页岩具有很强的产气能力。子六井页岩分布的厚度约为40–150 m，平均孔隙度为1％–5％，渗透率为0.001×10？3–0.100×10？3μm2。湖相页岩由不同的组合组成：纯页岩，嵌有石灰带的页岩和中壳薄石灰岩的页岩。页岩中石英含量高，有利于页岩气的开采。页岩中发育的石灰带和带壳石灰岩可以进一步提高页岩的经济可采性。用容积法估算的自流井湖相页岩页岩气资源约为3.8×1012–8.7×1012m3。

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