石油与天然气地质 ›› 2002, Vol. 23 ›› Issue (2): 139-142.doi: 10.11743/ogg20020207

• 油气空间 • 上一篇    下一篇

东濮凹陷盐湖层序结构与隐蔽油气藏

杨香华1, 陈开远1, 石万忠1, 张洪安2, 吕新华2, 黄龙威2   

  1. 1. 中国地质大学资源学院石油系, 湖北武汉, 430074;
    2. 中国石化中原油田分公司, 河南濮阳, 457001
  • 收稿日期:2001-08-29 出版日期:2002-06-25 发布日期:2012-01-16

SALINE LAKE SEQUENCE STRUCTURE OF DONGPU DEPRESSION AND SUBTLE RESERVOIR

Yang Xianghua1, Chen Kaiyuan1, Shi Wanzhong1, Zhang Hongan2, L? Xinhua2, Huang Longwei 2   

  1. 1. China University of Geosciences, Wuhan;
    2. Research Institute of Petroleum Exploration and Development, Zhongyuan Branch, Puyang
  • Received:2001-08-29 Online:2002-06-25 Published:2012-01-16

PDF (PC)

701

被引次数

69

摘要：

东濮凹陷岩盐层序的低位体系域主要为厚层块状岩盐夹薄层泥岩和砂岩,地震上表现为强振幅连续反射;湖侵期为深湖-半深湖相泥岩夹薄层岩盐和重力流砂体;高位体系域为厚层块状岩盐夹薄层泥岩和砂岩。东濮凹陷沙河街组古生物化石资料显示,藻类生物发育,缺少淡水种类,介形虫成层出现,说明盐类沉积环境以潮湿和半干旱气候交替为主,在还原的深湖-半深湖的背景中仍有碎屑物供给。该区盐湖隐蔽圈闭多发育于盐类重力流扇体和盐湖碎屑重力流透镜体中。

关键词: 盐湖层序, 盐类来源, 响应模式, 隐蔽油气藏, 东濮凹陷

Abstract:

Lowstand system tracts in rock salts sequence of Dongpu depression are predominantly composed of thick-massive rock salts intercalated by thin layers of mudstone and sandstone,showing in seism a continuous reflection with strong amplitude.The lacustrine transgression phase is characterized by sandstone with intercalation of thin layers of rocks salts and gravitational flow rock of deep and semi-deep lacustrine phase.Highstand system tracts are formed by thick-massive rock salts intercalated by thin layers of mudstone and sandstone.Palaeobiological fossil data collected from Shahejie Formation of Dongpu depression indicate that the development of algal-biologies,lack of freshwater biologies and mussel-shrimps appeared in layer have given a clear picture of the depositional environment of rock salts characterized chiefly and alternately by moisture and semi-arid climate,and with clastics supply even in the background of reduced deep lacustrine and semi-deep lacustrine phase.Subtle traps of Saline lake in this region are developed commonly in salt gravitational-flow fans and gravitational lenticular sandbodies of salt clastics.

Key words: saline lake sequence, salt source, response model, subtle reservoir, Dongpu depression

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