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红车断裂带是准噶尔盆地西北缘勘探程度相对较低的地区,随着油气勘探进程的加快,近几年在石炭系火山岩中不断有油气发现。本文从储层岩石学及储集性能等方面对该区石炭系火山岩储层特征进行了阐述和分析,认为研究区储层岩石主要为火山碎屑岩;储集空间主要为次生孔隙和次生裂缝;孔隙性最好的是火山角砾岩和砂砾岩,渗透性最好的是凝灰岩;储层岩石的含油气级别较低,绝大部分为不含油,储层绝大部分为干层或水层,只有约四分之一的储层有油气生产能力。
The red car fault zone is a relatively low exploration area in the northwestern margin of the Junggar Basin. With the acceleration of oil and gas exploration processes, oil and gas discoveries have been continuously found in Carboniferous volcanic rocks in recent years. This paper elaborates and analyzes the characteristics of Carboniferous volcanic reservoirs in this area from the aspects of reservoir petrology and reservoir properties, and holds that the reservoirs in this study area are mainly pyroclastic rocks. The reservoir space is mainly composed of secondary pores and secondary The fractures are the best. The best porosity is volcanic breccia and conglomerate, and the most permeable is tuff. The reservoir rocks have lower oil-gas level and are mostly oil-free. Most of the reservoirs are dry layers Or water layer, only about a quarter of the reservoir has oil and gas production capacity.