【摘要】 在区域构造背景和火山活动分析的基础上,通过大量的岩芯观察和薄片鉴定,综合利用测井、地震和重磁等资料,研究认为海拉尔盆地贝尔凹陷布达特群的岩相类型及分布规律与火山作用密切相关,其岩石类型以火山熔岩和火山碎屑岩为主,岩相的分布受中心式火山喷发的控制,火山熔岩、火山碎屑岩和碎屑岩围绕火山口呈环带状分布,将其岩相划分为3种亚相和6种微相,建立了贝尔凹陷布达特群岩相分布模式,并结合该区勘探开发的现状,探讨了不同岩相对油气储层发育程度的影响,发现火山沉积相带是有利的储层发育带。对预测盆地内其他次级断陷的有利潜山储层分布区,开拓勘探新领域具有重要意义。更多还原

【Abstract】 Based on the research on tectonic evolution and volcanism,according to the core,thin slice,well logging,seismic survey,gravity and magnetic data,studies on the igneous-related lithology and distribution of Budate group are carried out.The results show that the lithofacies and distribution are closely related to the volcanism,the volcanic rocks,pyroclastic rocks and clastic rocks are distributed in girdle pattern controlled by the eruption of central type.Then the rocks of Budate group can be classified into three sub-lithofacies and six micro-lithofacies.Finally,the igneous-related lithofacies and distribution mode of Budate group is established.In addition,the domination of igneous-related lithofacies on the types of reservoir space and degree of fracture growth are also studied.The discovery of volcanic sedimentary zones being advantageous reservoir zone is significant to predict distribution and new exploration realms of other secondary faulted buried-hill advantageous reservoir.更多还原