资源与产业 ›› 2010, Vol. 12 ›› Issue (2): 158-162.

• 问题研究 • 上一篇    下一篇

地震技术在煤层气储层研究与物性预测中的应用

王连刚李俊乾   

  1. (中国地质大学 能源学院, 北京 100083)
  • 收稿日期:2009-11-15 修回日期:2010-01-28 出版日期:2010-04-20 发布日期:2010-04-20
  • 作者简介:王连刚(1966— ),男,博士生、高级工程师,主要从事油气开发管理。E-mail: lijunqian1987@126.com
  • 基金资助:

    国家自然科学基金项目(40972107);国家科技重大专项(2008ZX05034-01, 2008ZX05062-001);国家重点基础研究发展计划(2009CB219604);中石油创新基金(2008D-5006-01-04);教育部创新团队发展计划项目(IRT0864)共同资助。

APPLICATION OF SEISMIC TECHNIQUE ON CBM RESERVOIR AND PREDICTION OF PHYSICAL PROPERTY

WANG Lian gang, LI Jun qian   

  1. (School of Energy Resources, China University of Geosciences, Beijing 100083, China)
  • Received:2009-11-15 Revised:2010-01-28 Online:2010-04-20 Published:2010-04-20

摘要:

随着我国对煤层气勘探开发的重视,煤层气储层的研究也越来越重要,特别是对煤层气储层内部结构特征的精细描述和刻画,以及对煤储层的含气性和渗透性预测,已成为研究的热点问题。由于煤层气藏自身所具有的独特特征,使得常规物理勘探方法难以对煤层气储层进行有效的研究,而地震技术则显示出其巨大优势。如利用地震技术解释煤储层构造;地震属性分析的方法研究薄煤层厚度;叠前AVO反演技术、叠前弹性阻抗( EI )反演技术和叠后波阻抗( AI )反演技术对煤储层含气性的预测;叠前方位AVO反演技术和地震反射层的曲率属性分析技术对煤储层渗透性的预测。经研究及实践表明,地震技术在煤储层研究中的效果明显。

关键词: 煤层气, 地震技术, 煤储层, 含气性, 渗透性

Abstract:

As China is focusing on CBM, it is becoming more and more important to research CBM-reservoir, particularly in the aspects of fine description of internal reservoir and prediction of gas-bearing properties and permeability. Due to unique characteristics of CBM-reservoir, conventional physical exploration is not very effective; however, the seismic techniques reveal a huge advantage. For example, seismic interprets the structure of CBM-reservoir and can tell the thickness of thin coal beds, and predict gas-bearing properties of CBM-reservoir by means of pre-stack AVO conversion, pre-stack elastic impedance ( EI ) conversion, and poststack acoustic impedance ( AI ) conversion, and predict permeability of CBM-reservoir by means of pre-stack direction AVO conversion and analyze curvature properties of seismic reflection stratum. The research results indicate that seismic techniques applied to CBM reservoirs have an obvious effect.

Key words: CBM, seismic technique, CBMreservoir, gasbearing properties, permeability

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