古地理学报2009，Vol.11Issue(5)：573-580,8.
二连盆地乌里雅斯太凹陷南洼断裂调节构造-坡折带特征及其对储集层分布的控制
Characteristics of fault accommodation structure-slope break zone and its control on reservoir distribution in southern subsag of Uliastai Sag,Erlian Basin
王有智 1张卫海1
作者信息
- 1. 中国石油大学(华东)地球资源与信息学院,山东东营,257061
- 折叠
摘要
Abstract
Based on restoration of the Early Cretaceous palaeogeomorphology of southern subsag of Uliastai Sag,researches have been carried out on the relationship between characteristics of fault accommodation structure-slope break zone, depositional systems, and reservoir distribution.The analyses show that the compound structural assemblage controls the shape of sandbody and reservoir distribution.There are accommodation structure-upper slope break, middle slope break and lower slope break spreading in NNE direction in southern subsag in the study area during the Early Cretaceous.The accommodation structure-slope break zone controls the formation of depositional systems.There are large-scaled fan delta-sublacustrine fan depositional system;The accommodation structure-slope break zone controls shapes of sandbodies,mainly seven small-scaled sublacustrine fan sandbodies were distributed in a tongue-like shape.Multistage slope breaks provide spaces for sediments deposition.The accommodation structure also controls provenance and drainage system,the major reservoir types are fan delta front and sublacustrine fan sandbodies controlled by the accommodation structure-slope break zone in southern subsag of the Uliastai Sag.The compound structure with different orders lead to the differences of reservoir types and their petrophysical property.关键词
二连盆地/乌里雅斯太凹陷/调节构造-坡折带/沉积体系/储集层分布Key words
Erlian Basin/Uliastai Sag/accommodation structure-slope break zone/depositional system/reservoir distribution分类
天文与地球科学引用本文复制引用
王有智,张卫海..二连盆地乌里雅斯太凹陷南洼断裂调节构造-坡折带特征及其对储集层分布的控制[J].古地理学报,2009,11(5):573-580,8.
