新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (2): 175-177.

• 油气勘探 • 上一篇    下一篇

东海盆地西湖凹陷地层剥蚀厚度研究

王震1, 张明利2, 武法东1, 王子煜3, 王林生3   

  1. 1.中国地质大学, 北京 100083;
    2.中国石化 石油勘探开发科学研究院,北京 100083;
    3.石油大学, 北京 102249
  • 收稿日期:2004-07-19 出版日期:2005-04-01 发布日期:2020-08-24
  • 作者简介:王甄(1976-),男,河北保定人,在读博士研究生,石油地质,(Tel)010-82320640.

A Study on Stratigraphic Erosion Thickness in Xihu Sag, the East China Sea Basin

WANG Zhen1, ZHANG Ming-li2, WU Fa-dong1, WANG Zi-yu3, WANG Lin-sheng3   

  1. 1. China University of Geosciences, Beijing 100083, China;
    2. Research Institute of Petroleum Exploration and Development, Sinope，Beijing 100083, China;
    3. University of Petroleum, Beijing 102249, China
  • Received:2004-07-19 Online:2005-04-01 Published:2020-08-24

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摘要： 中国东海盆地西湖凹陷晚中生代末期以来,经历了裂陷、拗陷和区域沉降3个阶段,形成T02(上新统底)、T42(中新统底）、T03(渐新统底）等多个广泛分布的区域性不整合面（地震反射界面）,地层遭受了强烈剥蚀。对用地质对比法求取地层剥蚀厚度的基本原理和计算方法作了简要介绍,以东海西湖凹陷26条主测线剖面为例,分析了地层剥蚀对油气成藏的影响,对这一方法的适用性作了探讨。

关键词: 东海盆地, 西湖凹陷, 地层剥蚀, 不整合, 对比

Abstract: Since Late Cretaceous, Xihn sag in the East China Sea basin underwent chasmic stage, depression stage and regional subsid-ing stage, shaping several extensive regional unconformities (seismic reflection interfaces) such as T02(hottom of Pliocene), T42 (bottom Miocene), T03(bottom of Oligocene), causing intensively stratigraphic erosion. This paper presents the basic principle and approach for cal-culating the stratigraphic erosion thickness by means of geologic analogy method, analyzes the affect of the erosion on oil-gas accumnla-tion by taking 26 major seismic line profiles in xihu sag as examples, and probes into the applicability of this approach.

Key words: East China Sea basin, Xihu sag, stratigraphic erosion, unconformity, correlation

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