石油学报 ›› 2016, Vol. 37 ›› Issue (12): 1451-1462.DOI: 10.7623/syxb201612001

• 地质勘探 •    下一篇

膏盐岩层系在海相油气成藏中的潜在作用

刘文汇1,2, 赵恒3,4,5, 刘全有2, 周冰2, 张殿伟2, 王杰1,2, 卢龙飞1,2, 罗厚勇1,2, 孟庆强2, 吴小奇2   

  1. 1. 中国石油化工集团公司油气成藏重点实验室 江苏无锡 214151;
    2. 中国石油化工股份有限公司石油勘探开发研究院 北京 100083;
    3. 甘肃省油气资源研究重点实验室 中国科学院油气资源研究重点实验室 甘肃兰州 730000;
    4. 中国科学院地质与地球物理研究所兰州油气资源研究中心 甘肃兰州 730000;
    5. 中国科学院大学 北京 100049
  • 收稿日期:2016-04-26 修回日期:2016-11-03 出版日期:2016-12-25 发布日期:2017-01-06
  • 通讯作者: 刘文汇,男,1957年1月生,1982年毕业于西北大学地质学系,2000年获中国科学院地球化学研究所地球化学专业博士学位,现为中国石油化工股份有限公司石油勘探开发研究院首席专家、教授、博士生导师,主要从事天然气地质学及油气地球化学方面研究。Email:whliu.syky@sinopec.com
  • 作者简介:刘文汇,男,1957年1月生,1982年毕业于西北大学地质学系,2000年获中国科学院地球化学研究所地球化学专业博士学位,现为中国石油化工股份有限公司石油勘探开发研究院首席专家、教授、博士生导师,主要从事天然气地质学及油气地球化学方面研究。Email:whliu.syky@sinopec.com
  • 基金资助:

    国家重点基础研究发展计划(973)项目(2012CB214801)和国家自然科学基金石油化工联合基金重点项目(No.U1663201)资助。

Potential role of gypsum strata series in marine hydrocarbon accumulation

Liu Wenhui1,2, Zhao Heng3,4,5, Liu Quanyou2, Zhou Bing2, Zhang Dianwei2, Wang Jie1,2, Lu Longfei1,2, Luo Houyong1,2, Meng Qingqiang2, Wu Xiaoqi2   

  1. 1. Sinopec Key Laboratory of Petroleum Accumulation Mechanisms, Jiangsu Wuxi 214151, China;
    2. Sinopec Petroleum Exploration & Production Research Institute, Beijing 100083, China;
    3. Gansu Provincial Key Laboratory of Petroleum Resources; Key Laboratory of Petroleum Resources Research, Chinese Academy of Sciences, Gansu Lanzhou 730000, China;
    4. Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Gansu Lanzhou 730000, China;
    5. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-04-26 Revised:2016-11-03 Online:2016-12-25 Published:2017-01-06

摘要:

膏盐岩层系作为理想的盖层被广泛关注,随着勘探和研究的不断深入,逐步发现膏盐岩层系在油气运移、储存、圈闭等过程中都发挥着重要作用。近年来,中国海相油气勘探在鄂尔多斯盆地东部、塔里木盆地中部、四川盆地西部等地区的含膏盐岩层系中不断取得突破,从而引发了高演化、低丰度膏盐岩层系成为油气来源这一问题的思考。在概要梳理膏盐岩层系在储-盖方面研究进展的同时,主要从烃源岩发育环境及成烃机理方面对膏盐岩层系烃源岩的发育和生烃潜力进行探究,认为膏盐岩层系包括中国高演化低有机碳含量的膏盐岩层系可以作为良好的烃源岩,这突破了低有机碳含量膏盐岩层系无法作为有效烃源的传统观点。高演化低有机碳含量膏盐岩层系中被低估的生烃物质、优质的生烃物质在地质历史中大量生烃转化和以有机酸盐形式存在的生烃物质是认识其生烃机理的关键。

关键词: 膏盐岩层系, 生烃潜力, 成烃碳, 生烃机理, 烃源岩, 储层, 盖层

Abstract:

Gypsum strata series have attracted wide attention as the ideal cap. Along with the continuous deepening of exploration and research, it is gradually found that gypsum strata series play an important role in the process of hydrocarbon migration, preservation and trap. In recent years, constant breakthroughs have been made in the gypsum-bearing strata of eastern Ordos Basin, central Tarim Basin and western Sichuan Basin during China's marine hydrocarbon exploration, thus leading to the consideration on the possibility of high-evolution and low-abundance gypsum strata series as hydrocarbon source. This paper briefly summarizes the research process of gypsum strata series in the aspect of reservoir and cap rock, and also explores the development and hydrocarbon generation potential of source rocks in gypsum strata series from the perspectives of the development environment and hydrocarbon generation mechanism of source rocks. It is believed that the gypsum strata series including China's high-evolution and low-TOC gypsum strata series are favorable source rocks, thus breaking through the traditional viewpoint that gypsum strata series were unable to be effective source rocks. In the high-evolution and low-TOC gypsum strata series, the underestimated hydrocarbon generation materials, the massive hydrocarbon generation and conversion of high-quality hydrocarbon generation materials in the geological history as well as the hydrocarbon generation materials in the form of organic acid salt are the keys to understanding the hydrocarbon-generation mechanism.

Key words: gypsum strata series, hydrocarbon generation potential, hydrocarbon-generating carbon, hydrocarbon generation mechanism, hydrocarbon source rock, reservoir, cap rock

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