金湖凹陷铜城断层构造特征与油气成藏

叶绍东

金湖凹陷铜城断层构造特征与油气成藏

叶绍东

中国石油化工股份有限公司江苏油田分公司地质科学研究院, 江苏扬州 225009

详细信息

作者简介:
叶绍东(1968-), 男, 高级工程师, 从事油田勘探生产和研究工作。E-mail:yesd.jsyt@sinopec.com

中图分类号: TE121.2
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- 被引次数: 0
出版历程
- 收稿日期: 2011-10-16
- 刊出日期: 2012-06-28

STRUCTURAL CHARACTERISTICS OF TONGCHENG FAULT AND HYDROCARBON ACCUMULATION IN JINHU SAG

YE Shao-dong

Geological Scientific Research Institute of Jiangsu Oilfield Company, SINOPEC, Yangzhou 225009, China

摘要

摘要: 铜城断层是苏北盆地金湖凹陷中一条二级断层，表现为明显的分段性，南段为逆断层，北段为正断层。关于铜城断层的性质及构造演化，长期以来存在不同的认识。基于地震剖面解释的构造分析并结合走滑断层的鉴别标志，认为铜城断层为一典型的走滑断层。走滑作用造成了断层倾向沿走向发生变化，正逆两种断层交替出现。铜城走滑断层不仅有利于形成一系列不同类型的圈闭，而且对低渗透储集层具有明显的改善作用，其伴生的构造圈闭是有利的油气聚集场所。
- 走滑断层 /
- 构造特征 /
- 低渗透储集层 /
- 金湖凹陷
Abstract: Tongcheng Fault is a second class fault which controlls the development of Tongcheng structural belt in Jinhu Sag.It is divided into two parts by its faulted feature showing reverse fault character at the south part and normal fault feature at the north part.There are different views about its character and evolvement.Tongcheng fault is considered as a typical strike-slip fault based on the structural analysis of seismic profiles.Varied directions of dip result in normal fault and reverse fault alternatively occurring along the fault because of strike-slip movement. Tongcheng strike-slip fault can not only form different types of traps, but also improve physical property of low-permeability reservoir, which is of great advantage to oil and gas accumulation.
- strike-slip faults /
- structural characteristics /
- low-permeability reservoir /
- Jinhu Sag

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图 1 金湖凹陷构造简图

Figure 1. Simplified structural map of Jinhu Sag

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图 2 铜城断层剖面特征图（剖面位置见图 1）

Figure 2. Profile characteristics of Tongcheng Fault

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图 3 铜城断层平面特征图

Figure 3. Plane characteristics of Tongcheng Fault

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图 4 铜城断层末端走滑-拉分盆地的地震剖面（剖面位置见图 1）

Figure 4. The seismic profile of strike-slip pull-apart basin in tip position of Tongcheng Fault

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表 1 铜城断层两侧地层厚度对比表

Table 1. Stratigraphic thickness comparison between the two sides of Tongcheng Fault

表 2 铜城断裂带辉绿岩统计表

Table 2. Statistics of intrusive rocks in Tongcheng Fault belt

表 3 铜城断裂带油井压裂效果统计表

Table 3. Statistics of oil-well fracturing effect in Tongcheng fault belt

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