热带海洋学报 ›› 2013, Vol. 32 ›› Issue (4): 22-29.doi: 10.11978/j.issn.1009-5470.2013.04.004

• 海洋地质学 • 上一篇    下一篇

东海陆坡天然气水合物成藏地质条件和BSR反射及成藏类型特征*

许红1, 2, 蔡瑛1, 孙和清1, 闫桂京1, 魏凯1, 2, 赵新伟1, 2, 朱玉瑞1, 2, 施剑1, , 董刚1, 李清1   

  1. 1. 国土资源部海洋油气资源与环境地质重点实验室, 国土资源部青岛海洋地质研究所, 山东 青岛 266071; 2. 中国石油大学(华东), 山东 青岛 266580
  • 收稿日期:2011-09-06 修回日期:2012-03-27 出版日期:2013-10-20 发布日期:2013-10-30
  • 作者简介:许红(1957—), 男, 研究员, 重庆市人,博士, 油气与水合物地质勘探专业。E-mail:qdxhong@163.com
  • 基金资助:

    我国海域天然气水合物资源调查评价项目

The survey status and geological conditions of accumulation of gas hydrate resource in the East China Sea

XU Hong1, 2, CAI Ying1, SUN He-qing1, YAN Gui-jing1, WEI Kai1, 2, ZHAO Xin-wei1, 2, ZHU Yu-rui1, 2, SHI Jian1, DONG Gang1, LI Qing1   

  1. 1. Key Laboratory of Marine Hydrocarbon Resource and Environment Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao 266071, China; 2. China University of Petroleum, Qingdao 266580, China
  • Received:2011-09-06 Revised:2012-03-27 Online:2013-10-20 Published:2013-10-30

摘要:

在分析研究区高热流、高地温梯度、强烈火山及黑潮活动地质背景及对天然气水合物形成的影响和前人相关工作进展基础上, 针对国内外冷泉、二氧化碳水合物调查发现进行分析, 指出研究区具有形成天然气水合物的油气地质条件; 通过ODP195航次KS-1井及研究区实测热流数据301个(组)与水深资料开展拟合分析, 建立了水深—水温变化曲线, 与物理化学平衡状态模拟结果确定500m水深是研究区天然气水合物成藏合适水深的结论相符; 特别是通过前人有关研究区地震调查解释天然气水合物模拟海底反射(bottom simulating reflector, BSR)影像及其特征分析, 提供了最新常规和高分辨率二维地震BSR的解释、常规与特殊地震资料系列处理的部分成果, 包括地震信号增强与速度精细等方法的处理认识, 发现并提出了大陆斜坡、斜坡根、海中低隆、深海平原和隆中凹等5种BSR反射类型, 指出它们构成冲绳海槽天然气水合物的不同成藏类型, 是下一步研究重要课题。

关键词: 东海陆坡, 冷泉与二氧化碳水合物, 天然气水合物, 黑潮影响, BSR反射类型, 信号增强, 速度倒转剖面, 成藏条件

Abstract:

This paper provides a comparative analysis of the geological conditions of the gas hydrate formation and evolution in the East China Sea. It shows occurrence evidence of cold seeps and carbon dioxide hydrate, which is based on the recall of gas hydrate survey status quo. There are many types of BSR(bottom simulating reflector) in the study area, such as the continental slope, the low uplift, deep-sea plains and so on, according to the explanation of BSR profile characteristics of conventional two-dimensional seismic and high-resolution seismic, and the explanation of signal processing and speed fine processing analysis. An estimation of natural gas hydrate resources by the measured seabed organic carbon, porosity and new edition of gas hydrate phase diagram is carried out.

Key words: East China Sea slope, geological background, gas hydrate, type features of BSR, geological conditions of accumulation

中图分类号: 

  • P744