川北地区侏罗系页岩气成藏条件良好,近年来取得了一系列突破。下侏罗统自流井组东岳庙段研究程度相对较低,其页岩气资源的勘探开发潜力有待进一步深入研究。综合应用有机地球化学、X射线衍射和扫描电镜等分析及常规氦气法测试、等温吸...川北地区侏罗系页岩气成藏条件良好,近年来取得了一系列突破。下侏罗统自流井组东岳庙段研究程度相对较低,其页岩气资源的勘探开发潜力有待进一步深入研究。综合应用有机地球化学、X射线衍射和扫描电镜等分析及常规氦气法测试、等温吸附测试等技术手段,对川北地区东岳庙段富有机质泥页岩的基本地质特征进行了研究。结果表明:东岳庙段干酪根以Ⅲ型为主,有机质丰度较高,热演化程度适中;泥页岩矿物成分以黏土矿物和石英为主,黏土矿物主要由伊/蒙混层、伊利石、高岭石和绿泥石组成;泥页岩主要发育无机孔及裂缝,孔隙度平均为3.1%,渗透率平均为0.751 m D,但大多小于0.1 m D,孔隙度与渗透率总体呈正相关关系;泥页岩吸附能力较强,有利于页岩气富集,但页岩气较难被解析出。综合分析后认为,川北地区东岳庙段页岩气成藏条件良好,且页岩气富集高产受控于沉积相、岩性组合及裂缝和隔离层三要素。展开更多
The paper describes an early and primitive sauropod dinosaur, Gongxianosaurus shibeiensis (gen. et sp. nov.), from the Dongyuemiao Member of the Lower Jurassic Ziliujing Formation in Shibei Township, Gongxian County, ...The paper describes an early and primitive sauropod dinosaur, Gongxianosaurus shibeiensis (gen. et sp. nov.), from the Dongyuemiao Member of the Lower Jurassic Ziliujing Formation in Shibei Township, Gongxian County, Sichuan Province, China, which is one of the 5 dinosaur fossils discovered in Gongxian in 1997. Except the skull which is incomplete, the fossils are well preserved. It has some features of both sauropods and prosauropods. It is an intermediate type in the evolution of dinosaurs from prosauropods to sauropods and provides materials for the study of the origin and evolution of the sauropod dinosaur fauna. The discovery of this new sauropod furnishes a way for the stratigraphic correlation between the Early Jurassic Ziliujing Formation in the Sichuan basin and the Lower Jurassic Lufeng Formation in the Central Yunnan basin.展开更多
基于野外露头、岩芯、钻井等资料,通过薄片鉴定、地球化学分析、X-衍射分析、物性分析、扫描电镜观察和等温吸附模拟等多种方法,对鄂西建南地区自流井组东岳庙段泥页岩储层特征进行了研究。研究表明,建南地区自流井组东岳庙段形成于半...基于野外露头、岩芯、钻井等资料,通过薄片鉴定、地球化学分析、X-衍射分析、物性分析、扫描电镜观察和等温吸附模拟等多种方法,对鄂西建南地区自流井组东岳庙段泥页岩储层特征进行了研究。研究表明,建南地区自流井组东岳庙段形成于半深湖相沉积环境,泥页岩厚度较大,均值达80 m,有机质丰度高(TOC一般在0.42%~2.77%),热演化程度适中,处于成熟阶段(R o均值1.13%),脆性矿物含量丰富,多种孔隙类型及裂缝发育,模拟吸附气含量较高,均值为2.23 m 3/t,多口井见气显示埋藏适中。综合分析认为,鄂西建南地区自流井组东岳庙段页岩储层条件好,具有良好的勘探前景。展开更多
文摘川北地区侏罗系页岩气成藏条件良好,近年来取得了一系列突破。下侏罗统自流井组东岳庙段研究程度相对较低,其页岩气资源的勘探开发潜力有待进一步深入研究。综合应用有机地球化学、X射线衍射和扫描电镜等分析及常规氦气法测试、等温吸附测试等技术手段,对川北地区东岳庙段富有机质泥页岩的基本地质特征进行了研究。结果表明:东岳庙段干酪根以Ⅲ型为主,有机质丰度较高,热演化程度适中;泥页岩矿物成分以黏土矿物和石英为主,黏土矿物主要由伊/蒙混层、伊利石、高岭石和绿泥石组成;泥页岩主要发育无机孔及裂缝,孔隙度平均为3.1%,渗透率平均为0.751 m D,但大多小于0.1 m D,孔隙度与渗透率总体呈正相关关系;泥页岩吸附能力较强,有利于页岩气富集,但页岩气较难被解析出。综合分析后认为,川北地区东岳庙段页岩气成藏条件良好,且页岩气富集高产受控于沉积相、岩性组合及裂缝和隔离层三要素。
文摘The paper describes an early and primitive sauropod dinosaur, Gongxianosaurus shibeiensis (gen. et sp. nov.), from the Dongyuemiao Member of the Lower Jurassic Ziliujing Formation in Shibei Township, Gongxian County, Sichuan Province, China, which is one of the 5 dinosaur fossils discovered in Gongxian in 1997. Except the skull which is incomplete, the fossils are well preserved. It has some features of both sauropods and prosauropods. It is an intermediate type in the evolution of dinosaurs from prosauropods to sauropods and provides materials for the study of the origin and evolution of the sauropod dinosaur fauna. The discovery of this new sauropod furnishes a way for the stratigraphic correlation between the Early Jurassic Ziliujing Formation in the Sichuan basin and the Lower Jurassic Lufeng Formation in the Central Yunnan basin.
文摘基于野外露头、岩芯、钻井等资料,通过薄片鉴定、地球化学分析、X-衍射分析、物性分析、扫描电镜观察和等温吸附模拟等多种方法,对鄂西建南地区自流井组东岳庙段泥页岩储层特征进行了研究。研究表明,建南地区自流井组东岳庙段形成于半深湖相沉积环境,泥页岩厚度较大,均值达80 m,有机质丰度高(TOC一般在0.42%~2.77%),热演化程度适中,处于成熟阶段(R o均值1.13%),脆性矿物含量丰富,多种孔隙类型及裂缝发育,模拟吸附气含量较高,均值为2.23 m 3/t,多口井见气显示埋藏适中。综合分析认为,鄂西建南地区自流井组东岳庙段页岩储层条件好,具有良好的勘探前景。
