石油学报 ›› 2015, Vol. 36 ›› Issue (1): 60-66.DOI: 10.7623/syxb201501007

• 地质勘探 • 上一篇    下一篇

英买力地区中生界—新生界油气藏石油包裹体特征及成藏期次

罗枭1,2,3, 姜振学1,2, 李卓1,2, 李峰1,2, 刘建良4, 高甜1,2, 冯洁1,2   

  1. 1. 中国石油大学油气资源与探测国家重点实验室 北京 102249;
    2. 中国石油大学非常规天然气研究院 北京 102249;
    3. 中国石油大学盆地与油藏研究中心 北京 102249;
    4. 中国石油勘探开发研究院 北京 100083
  • 收稿日期:2014-06-01 修回日期:2014-09-20 出版日期:2015-01-25 发布日期:2014-12-09
  • 通讯作者: 姜振学, 男, 1963年4月生, 1986年获大庆石油学院学士学位, 1998年获中国地质大学(北京)博士学位, 现为中国石油大学(北京)非常规天然气研究院副院长、博士生导师, 主要从事含油气盆地分析、油气形成与分布方面研究工作.Email:jiangzx@cup.edu.cn
  • 作者简介:罗枭, 男, 1991年1月生, 2012年获长江大学学士学位, 现为中国石油大学(北京)硕士研究生, 主要从事油气成藏与分布方面研究工作.Email:aoelx1541@126.com
  • 基金资助:

    国家重大科技专项(2011ZX05003-001)、国家重点基础研究发展计划(973)项目(2011CB201105)资助.

The properties of petroleum inclusions and stages of hydrocarbon accumulation in Mesozoic-Cenozoic reservoirs in Yingmaili area of Tabei uplift, Tarim Basin

Luo Xiao1,2,3, Jiang Zhenxue1,2, Li Zhuo1,2, Li Feng1,2, Liu Jianliang4, Gao Tian1,2, Feng Jie1,2   

  1. 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    2. Unconventional Natural Gas Institute, China University of Petroleum, Beijing 102249, China;
    3. Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249, China;
    4. Petrochina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
  • Received:2014-06-01 Revised:2014-09-20 Online:2015-01-25 Published:2014-12-09

摘要:

明确油气的成藏期次及成藏演化历史是当前英买力地区中生界—新生界油气藏勘探亟待解决的关键问题.利用石油包裹体岩相学、微束荧光光谱和显微测温技术,对英买力地区中生界—新生界石油包裹体特征和油气成藏期次开展了详细研究.结果表明:样品中主要观察到发蓝色、蓝白色、亮黄色、弱黄色荧光的石油包裹体;荧光光谱的主峰波长主要集中在470~490 nm和510~540 nm,分别指示近蓝白色和近黄色2种荧光的石油包裹 体组合.其中,近黄色石油包裹体的红绿商Q在0.48~0.65,色度指数CIE-XCIE-Y 值在0.345~0.360和0.358~0.375,对应盐水包裹体的均一温度主峰值在80~90℃;近蓝白色石油包裹体的红绿商Q在0.20~0.51,色度指数CIE-X和CIE-Y值在0.302~0.333和0.325~0.352,对应盐水包裹体的均一温度主峰值在120~130℃.结合埋藏史、热演化史模拟结果,明确了英买力地区中生界—新生界油气藏具有2期成藏过程:第1期在8~5 Ma,以形成常规油藏为主,成熟度相对较低,石油包裹体发近黄色荧光;第2期在3 Ma以来,以形成凝析油气藏为主,成熟度较高,石油包裹体发近蓝白色荧光.

关键词: 石油包裹体, 成藏期次, 荧光光谱, 英买力地区, 中生界—新生界

Abstract:

To clarify the stages and evolution process of hydrocarbon accumulation is presently the key issue of exploring Mesozoic-Cenozoic reservoirs in Yingmaili area of Tabei uplift, Tarim Basin. A detailed study was carried out to determine the properties of petroleum inclusions and the stages of hydrocarbon accumulation in Mesozoic-Cenozoic reservoirs using rock samples from typical wells, through a combination of microscopic examination, micro-beam fluorescence spectroscopy, and micro-thermometric technique. Results showed that petroleum inclusions in reservoirs rocks mainly emitted blue, blue-white, bright yellow, and weak yellow fluorescence. Peak wavelengths of the fluorescence spectra were mainly distributed in the ranges of 470-490 nm and 510-540 nm, corresponding to blue-white and yellow fluorescence, respectively. Of these, petroleum inclusions emitting yellow fluorescence had the red-green quotient of 0.48-0.65 and the chromaticity of 0.345-0.360 (CIE-X) and 0.358-0.375 (CIE-Y), whereas the corresponding brine inclusions had the main peak of homogeneous temperatures at 80-90°C. Differently, petroleum inclusions emitting blue-white fluorescence had the red-green quotient of 0.20-0.51, CIE-X of 0.302-0.333, and CIE-Y of 0.325-0.352, whereas the corresponding brine inclusions had the main peak of homogeneous temperatures at 120-130℃. Combined with simulation analysis of burial history and thermal evolution history, two-stage hydrocarbon accumulation was identified in Mesozoic-Cenozoic reservoirs in Yingmaili area: in the first stage (8-5 Ma), mainly normal reservoirs were formed with relatively low maturity and petroleum inclusions emitting yellow fluorescence; and in the second stage (since 3 Ma), mainly condensate reservoirs were formed with relatively high maturity and petroleum inclusions emitting blue-white fluorescence.

Key words: petroleum inclusions, hydrocarbon accumulation period, fluorescence spectroscopy, Yingmaili area, Mesozoic-Cenozoic reservoirs

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