油气地质

钟市油田潜江组含盐层系高分辨率层序地层格架及砂体分布规律

  • 杨仕维 ,
  • 李建明
展开
  • 长江大学地球科学学院
尹艳树, 1978 年生, 男, 博士, 主要从事层序地层及储层建模的教学与科研。地址: ( 434023) 湖北省荆州市南环路1 号长江大学地球科学学院。E-mail: yys6587@126.com

网络出版日期: 2008-03-15

基金资助

国家自然科学基金( 编号: 40572078) 长江大学博士科研启动资金( 编号: 39210258) 资助

High resolution sequence stratigraphy framework and the distribution of sandbodies in salt lake of Qianjiang Formation in Zhongshi Oilfield

  • YANG Shiwei ,
  • LI Jianming
Expand
  • College of Geosciences, Yangtze University, Jingzhou 434023, China

Online published: 2008-03-15

摘要

以钟市油田潜三段储层为例, 进行了盐湖盆地高分辨率层序地层研究。在冲刷面、湖泛面以及盐岩界面基础上, 根据相组合特征, 在潜三段识别出向上“变深”不对称旋回、向上“变浅”不对称旋回以及向上“变浅”复“变深”对称旋回等3 类基本短期旋回。根据短期旋回叠加样式, 将潜三段划分为5 个中期旋回和1 个长期旋回。中期旋回内砂体分布规律受可容纳空间与沉积物供给比(A/S) 的控制。指出在A/S<<1 时, 砂体最为发育, 且连通性最好。但基准面最低时, 气候干燥, 湖盆水体浓缩, 碎屑供给不充分, 发育盐岩沉积; 在A/S<<1 向A/S<1 过渡时砂体较发育, 但隔夹层逐渐丰富; 在A/S>>1 时, 砂体不发育, 多为孤立砂体。

本文引用格式

杨仕维 , 李建明 . 钟市油田潜江组含盐层系高分辨率层序地层格架及砂体分布规律[J]. 岩性油气藏, 2008 , 20(1) : 53 -58 . DOI: 10.3969/j.issn.1673-8926.2008.01.009

Abstract

The high resolution sequence stratigraphy of salt lake in the third member of Qianjiang Formation in Zhongshi Oilfield is studied. Based on the characteristics of scoured surface, flooding surface and the rock salt boundary surface, and the facies association, three short-term base level cycles are identified, including deepening upward asymmetry base level cycle, shallowing-upward asymmetry base level cycle, and symmetry base level cycle. According to the stacked pattern, the third member of Qianjiang Formation is divided into five middle-term base level cycles and one long-term base level cycle. The distribution of sand bodies is controlled by the ratio of accommodation to supply (A/S) . When A/S is very smaller than 1, the sand bodies are best developed, with best formation communication, and under the condition that the weather is hot and the lake evaporation is greater than the supply, the salt is deposited. When A/S is close to 1, the sand bodies are relatively developed. When A/S is very greater than 1, the sand bodies are undeveloped.

参考文献

[ 1] 陈发亮, 朱晖, 李绪涛, 等.东濮凹陷沙河街组盐岩成因研究[ J] .沉积学报, 2000, 18( 3) : 384- 388.
[ 2] 顾家裕.东濮凹陷盐岩形成环境[ J] .石油实验地质, 1986, 8( 1) :22- 28.
[ 3] 金强, 黄醒汉.东濮坳陷早第三纪盐湖成因的探讨———一种深水成因模式[ J] .华东石油学院学报, 1985, 9( 1) : 1- 13.
[ 4] 苏惠, 许化政, 张金川, 等.东濮坳陷沙三段盐岩成因[ J] .石油勘探与开发, 2006, 33( 5) : 600- 605.
[ 5] 方志雄, 陈开远, 杨香华, 等.潜江盐湖盆地层序地层特征[ J] .盐湖研究, 2003, 11( 2) : 14- 23.
[ 6] 邓宏文.美国层序地层研究中的新学派———高分辨率层序地层学[ J] .石油与天然气地质, 1995, 16( 2) : 89- 97.
[ 7] 陈启林.大型咸化湖盆地层岩性油气藏有利条件与勘探方向———以柴达木盆地柴西南古近纪为例[ J] .岩性油气藏, 2007,19( 1) : 46- 51.
文章导航

/