大庆石油地质与开发

2013, v.32;No.160(06) 6-10

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海拉尔盆地不整合面的识别及其作用
IDENTTIFICATION AND ACTIONS OF THE UNCONFORMITY SURFACE IN HAILAR BASIN

唐振国,陈均亮,杨秀彬,李忠权,王卓卓
TANG Zhenguo,CHEN Junliang,YANG Xiubin,LI Zhongquan,WANG Zhuozhuo

摘要(Abstract):

为了搭建断陷盆地等时地层格架,在综合分析海拉尔盆地地震、钻井和野外露头等资料基础上,从不整合面的成因出发,识别出构造和沉积2种类型不整合界面,划分出T_(02)、T_(04)、T_(22)、T_3、T_4、T_5等6个构造不整合面和T_2、T_(21)等2个沉积不整合面。海拉尔盆地不整合面的识别可使盆地内各凹陷之间所追踪的地震反射层位统一,从而确保在等时的地层格架中进行地层对比、沉积体系域和沉积相分析;同时,不整合面也是油气运移的重要通道,不整合面上、下的圈闭中已经发现了潜山、构造—地层和断块等多种类型油气藏。
In order to establish the isochronic stratigraphic frame of the fault basin,on the bases of the synthetical analysis of the seismic,drilling and outcrop data of Hailar Basin,two types of the structural and sedimentary unconformities are identified from the viewpoint of the genesis of the unconformities:six structural unconformities(T_(02),T_(04),T_(22),T_3,T_4 and T_5) and two sedimentary unconformities(T_2 and T_(21)).The distinction of the unconformities can make the unification of the tracked seismic reflection formations among the sags of the basin,thus the stratigraphic correlation,sedimentary system tract and facies analysis can be ensured in the stratigraphic frame;in the meantime,the unconformities are the important channels for the hydrocarbon migration,many kinds of petroleum reservoirs such as buried hill,structural-stratigraphic and faulted-block ones are discovered in the traps of top and bottom of the unconformities.

关键词(KeyWords): 海拉尔盆地;不整合面;断陷盆地;沉积不整合;构造不整合;地层对比
Hailar Basin;unconformity surface;fault/rifted basin;sedimentary unconformity;structural unconformity;stratigraphic correlation

Abstract:

Keywords:

基金项目(Foundation): 教育部博士点基金项目(20095122110002);; 国家自然科学基金项目(41030426)

作者(Author): 唐振国,陈均亮,杨秀彬,李忠权,王卓卓
TANG Zhenguo,CHEN Junliang,YANG Xiubin,LI Zhongquan,WANG Zhuozhuo

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