新疆石油地质 ›› 2008, Vol. 29 ›› Issue (5): 578-580.

• 油气勘探 • 上一篇    下一篇

地层不整合油气输导模式探讨——以济阳坳陷为例

陈涛, 蒋有录   

  1. 中国石油大学地球资源与信息学院,山东东营257061
  • 收稿日期:2007-12-04 发布日期:2020-10-19
  • 作者简介:陈涛(1981-),男,山东青岛人,在读博士研究生,石油地质,(Tel)13864741071 (E-mail)chentao-upc@163.com.
  • 基金资助:
    中国石化重点科技攻关项目,济阳坳陷第三系不整合油气藏形成与分布规律(P06012)资助

Approach to Oil-Gas Migration Patterns in Stratigraphic Unconformity—An example from Jiyang depression

CHEN Tao, JIANG You-lu   

  1. Faculty of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong 257061, China
  • Received:2007-12-04 Published:2020-10-19

摘要: 对济阳坳陷不整合结构及其矿物学、元素地球化学和孔渗等地质特征分析研究后,发现不整合面下砂岩、碳酸盐岩、变质岩等裂缝、孔隙发育,形成高孔、高渗带,而泥岩由于后期的成岩作用,裂缝、孔隙均被重结晶泥质充填,不具渗透性。不整合面下的高孔、高渗带成为油气长距离运移的主要通道,在岩心、镜下均可见到风化岩石裂缝、孔隙中残留的原油。并建立了济阳坳陷不整合的2 种油气输导模式:不整合结构层侧向输导模式、不整合“天窗”式垂向输导模式。

关键词: 济阳坳陷, 不整合, 地质特征, 孔渗特征, 输导模式

Abstract: The pore and fracture are widely developed in sandstone, carbonate rock and magmatite under unconformity, which tend to forming high porosity and high permeability belts, while those in mudstone are filled by recrystallization due to deuterodiagenesis without permeability. These belts are possible to shape the main passageway of long-distance oil migration because crude remained in the fractures and pores can be seen by core and microscopic observation. This paper presents the process of stratigraphic reservoir's oil accumulation in south slope of Dongying sag, and sets up two types of oil-gas migration patterns under unconformity: one is lateral migration pattern, and the other is clearstory-like vertical migration pattern.

Key words: stratigraphic unconformity, porosity and permeability feature, petroleum migration, transport pattern

中图分类号: