石油与天然气地质 ›› 2013, Vol. 34 ›› Issue (2): 242-247.doi: 10.11743/ogg20130216

• 盆地构造 • 上一篇    下一篇

渤海西部沙垒田凸起东段构造演化特征与油气成藏

石文龙, 张志强, 彭文绪, 王保全, 郭涛   

  1. 中海石油(中国)有限公司 天津分公司,天津 300452
  • 收稿日期:2012-03-20 修回日期:2013-03-09 出版日期:2013-04-28 发布日期:2013-05-02
  • 第一作者简介:石文龙(1980—),男,工程师,石油地质与勘探。
  • 基金项目:

    国家科技重大专项"渤海海域大中型油气田地质特征"(2011ZX05023-006-002)。

Tectonic evolution and hydrocarbon accumulation in the east part of Shaleitian Sailent,western Bohai Sea

Shi Wenlong, Zhang Zhiqiang, Peng Wenxu, Wang Baoquan, Guo Tao   

  1. Tianjin Branch of CNOOC China Ltd., Tianjin 300452, China
  • Received:2012-03-20 Revised:2013-03-09 Online:2013-04-28 Published:2013-05-02

PDF (PC)

976

被引次数

25

摘要：

渤海西部的沙垒田凸起是一个长期暴露接受风化剥蚀的古潜山,以早期走滑断层为分隔,将沙垒田凸起分为东、西两段。目前,沙垒田凸起的东段已发现数亿吨的石油地质储量。受早期基底走滑构造应力的作用,在沙垒田凸东段主体区自西向东主要发育了4组北东向走滑断层。由于受走滑断层的影响,在基底面上形成古沟道,晚期新近系披覆沉积在潜山上面,由于晚期右旋走滑的影响,在新近系形成了一系列北东东或近东西走向的断层,这些雁列断层对凸起区油气田的形成具有明显的控制作用。通过对凸起区构造演化特征的分析,建立了沙垒田凸起区东段新近系油气成藏模式,明确了该区油气勘探潜力,为凸起区东段滚动勘探和区域储量规模的升级提供了理论支持。

关键词: 雁列带, 构造演化, 成藏模式, 新近系, 沙垒田凸起, 渤海西部

Abstract:

Shaleitian salient is an exposed paleo-buried hill underwent long-term weathering and erosion with several structural highs.It is separated into the east part and the west part by early strike-slip faults.Several hundred-million-tons of OOIP have been discovered in the east part of the salient.Under the control of the early tectonic strike stress in basement,four NE-trending strike-slip faults were developed in the east part of the salient,affected by which the ancient channels were formed on the basement surface.The Neogene was draped on the buried hill.Due to the impact of later dextral strike-slip faulting,a series of NNE-trending or nearly EW-trending faults were formed in the Neogene.These en echelon faults have significant control on the accumulation of hydrocarbon in the area.The paper establishes the hydrocarbon accumulation pattern of the Neogene and determines the hydrocarbon exploration potential by analyzing the structural evolution characte-ristics of the east part of the salient,providing theoretical support for the progressive exploration and reserve growth.

Key words: en echelon fault belt, tectonic evolution, hydrocarbon accumulation pattern, Neogene, Shaleitian Salient, western Bohai Sea

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