白音查干凹陷变换构造与油气关系

doi:10.11743/ogg20050221

摘要/Abstract

摘要：

白音查干凹陷在发育演化过程中,由于基底的升降、断裂活动的不均衡性,导致伸展变形构造的不同部位形成多种类型的变换构造调节体系。白音查干凹陷毛呼凸起就是一个大的变换构造带,由两个同向型斜向调节带和一个平行走向型调节带组成。西部洼陷的构造调节带主要有反向型背斜调节带、同向型横向调节带、同向型斜向调节带和平行走向调节带4种类型。勘探实践证明,西部洼陷南部的锡林好来、达尔其南、达尔其东和翁特等构造调节带及附近地区,构造、岩性和地层超覆不整合圈闭发育,又长期处于油气运移的主要指向,有利于油气的聚集和富集。

关键词: 白音查干凹陷, 伸展盆地, 变换构造, 调节带, 油气

Abstract:

During the evolution of Baiyinchagan depression, various types of transfer structural accommodation systems have been formed in different parts of the extensional structure, due to the elevation and subsidence of the basement and uneven faulting. Maohu swell in Baiyinchagan depression is a large transfer structural zone, which consists of two synthetic oblique accommodation zones and one strike-paralleled accommodation zone. The structural accommodation zones in the western sag can be divided into 4 types, including antithetic anticline accommodation zone, synthetic transverse accommodation zone, synthetic oblique accommodation zone and strike-paralleled accommodation zone. Exploration practices show that there are well developed structural, lithological and overlapping unconformity traps in the Xilinhaole, Darqinan, Darqidong and Wongte accommodation zones and their adjacent areas in southern part of the western sag, and they have long been in the major direction of hydrocarbon migration. Therefore, they are favorable for the accumulation and enrichment of hydrocarbons.

Key words: Baiyinchagan depression, extensional basin, transfer structure, accommodation zone, petroleum

中图分类号:

TE111.1

库国正,张放东,邓已寻,等. 白音查干凹陷变换构造与油气关系[J]. 石油与天然气地质, 2005, 26(2): 257-262. doi: 10.11743/ogg20050221 Ku Guozheng,Zhang Fangdong,Deng Yixun,et al. Relationship between transfer structures and hydrocarbons in Baiyinchagan depression[J]. Oil & Gas Geology, 2005, 26(2): 257-262. doi: 10.11743/ogg20050221

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