石油学报 ›› 2018, Vol. 39 ›› Issue (5): 528-540.DOI: 10.7623/syxb201805004

• 地质勘探 • 上一篇    下一篇

海洋沉积物中芳香烃预测中国南海潮汕坳陷油气圈闭方法

郝海燕1, 赵静2, 刘海生3, 钟广见2, 马万云1, 薛平1, 陆文凯4, 陈瓞延1   

  1. 1. 清华大学物理系 北京 100084;
    2. 广州海洋地质调查局 广东广州 510760;
    3. 清华大学核能与新能源技术研究院 北京 100084;
    4. 清华大学自动化系 北京 100084
  • 收稿日期:2017-12-29 修回日期:2018-03-16 出版日期:2018-05-25 发布日期:2018-06-06
  • 通讯作者: 郝海燕,女,1972年9月生,1996年获重庆大学学士学位,2007年获西安交通大学电子科学与技术专业博士学位,现为清华大学物理系高级工程师,主要从事纳米科学及油气地球化学方面的研究。Email:haohaiyan@mail.tsinghua.edu.cn
  • 作者简介:郝海燕,女,1972年9月生,1996年获重庆大学学士学位,2007年获西安交通大学电子科学与技术专业博士学位,现为清华大学物理系高级工程师,主要从事纳米科学及油气地球化学方面的研究。Email:haohaiyan@mail.tsinghua.edu.cn
  • 基金资助:

    国家科技重大专项"南海北部陆坡(荔湾3-1及周边)深水油气田开发工程设计"(2011ZX05056-001-01)和中国地质调查局专项(DD20160154)资助。

Prediction of oil and gas reservoir traps by aromatic hydrocarbons from seabed sediments in Chaoshan depression,South China Sea

Hao Haiyan1, Zhao Jing2, Liu Haisheng3, Zhong Guangjian2, Ma Wanyun1, Xue Ping1, Lu Wenkai4, Chen Dieyan1   

  1. 1. Department of Physics, Tsinghua University, Beijing 100084, China;
    2. Guangzhou Marine Geological Survey, Guangdong Guangzhou 510760, China;
    3. Institute of Nuclear and New Energy of Technology, Tsinghua University, Beijing 100084, China;
    4. Department of Automation, Tsinghua University, Beijing 100084, China
  • Received:2017-12-29 Revised:2018-03-16 Online:2018-05-25 Published:2018-06-06

摘要:

利用一种先进的地球化学勘查技术,通过检测海底沉积物中的芳香烃的含量预测可能的油气圈闭。基于新的高分子吸附材料快速高效地提取海洋表层沉积物中痕量的苯、甲苯、乙苯和二甲苯(简称为BTEX)和萘、菲、蒽(简称为PAHs)等芳烃组分,结合热脱附和气相色谱质谱(GC-MS)完成对沉积物中痕量BTEX和PAHs的定性定量分析,利用BTEX和PAHs浓度异常范围预测油气圈闭。结合中国南海北部陆坡深水区白云凹陷荔湾地区已知LW3-1油气田的验证结果,以及中国南海东沙海域中生界油气勘探新区(潮汕坳陷)二维地震勘探的结果,提出了在潮汕坳陷北部斜坡区和中央隆起带、水深1 000~1 500 m的深水区是寻找中生代油气藏的重点勘探区,为缩小勘探目标区和降低勘探成本提供了重要参考。

关键词: 沉积物, 芳香烃, 潮汕凹陷, 油气勘探, 油气藏

Abstract:

In this study, an advanced geochemical exploration technology is used to predict possible oil and gas traps by detecting the content distribution of aromatic hydrocarbons in seabed sediments. Using new high-polymer adsorption materials, the trace benzene, toluene, ethylbenzene and xylene(BTEX), naphthalene, phenanthrene, anthracene(PAHs) and other aromatic components in marine surficial sediments are extracted rapidly and efficiently. On this basis, thermal desorption and gas chromatography mass spectrometry(GC-MS) are further applied to complete the qualitative and quantitative analysis of trace BTEX and PAHs in sediments. According to abnormal range of BTEX and PAHs concentrations, oil and gas traps are predicted. Based on the validation results of LW3-1 oil and gas field in Liwan area, Baiyun Depression of the deep waters on the northern slope of South China Sea as well as the two-dimensional seismic exploration results in the new Mesozoic hydrocarbon exploration areas(Chaoshan Depression), Dongsha seawaters of South China Sea, the deep waters with the depth of 1000-1500 m on the northern slope zone and central uplift belt of Chaoshan Depression are proposed to be the frontier exploration areas for Mesozoic oil and gas reservoirs. It provides an important reference for shrinking exploration target areas and reducing exploration cost.

Key words: sediment, aromatic hydrocarbons, Chaoshan depression, oil-gas exploration, oil and gas reservoirs

中图分类号: