【摘要】 鄂尔多斯盆地北部上古生界天然气资源丰富,盒8段是苏里格气田的主力天然气产层,但目前盒8段相关研究主要集中在岩心、测井和地震等方面,盒8段野外露头的精细研究仍不多见,尤其是砂岩显微微观特征系统研究。在鄂尔多斯盆地周缘露头野外踏勘的基础上,选择与苏里格气田盒8段物源区相同且沉积环境较一致的榆林府谷天生桥剖面进行了实测与描述、密集取样,系统研究了岩石类型、结构特征、矿物成分、成岩作用等方面内容,并归类整理出一个完整的砂岩显微图像数据集,可望为鄂尔多斯盆地北部上古生界盒8段砂岩特征及其优质储层控制因素研究提供有价值的基础资料。更多还原

【Abstract】 There are abundant gas resources in the Upper Paleozoic of northern Ordos Basin. He-8 Member is the main gas production layer in Sulige gas field. But up to now, He-8 Member has been mainly studied to better understand core, logging and earthquake, whereas finer-level research on outcrops is still rare, especially those on the microscopic characteristics of sandstone systematically. In this study, we performed field survey on the outcrops of the Tianshengqiao section in the periphery of Ordos Basin, located in Fugu, Yulin, which has the same provenance as the He-8 member of Sulige gas field and has a relatively consistent sedimentary environment. The survey included on-site measurement, description and intensive sampling of the section. We systematically studied the types, structural characteristics, mineral composition, diagenesis and other aspects of the rocks, through which to build a complete sandstone microscopic image dataset. This dataset can be used to support studies of sandstone characteristics and high-quality reservoir protection in the Upper Paleozoic of northern Ordos Basin.更多还原