波谱学杂志 ›› 2010, Vol. 27 ›› Issue (2): 214-220.

• 研究论文 • 上一篇    下一篇

利用核磁共振录井技术定量评价储层的分选性

王志战*, 许小琼   

  1. 胜利石油管理局 地质录井公司,山东 东营 257064
  • 收稿日期:2009-08-25 修回日期:2009-09-11 出版日期:2010-06-05 发布日期:2010-06-05
  • 基金资助:

    国家重点基础研究发展计划(“973”计划) 资助项目(2003CB214601),中国博士后科学基金资助项目(20090461267).

Quantitative Evaluation of Reservoir Separation with MR-ML Technology

 WANG Zhi-Zhan*, XU Xiao-Qiong   

  1. Geologging Company, Shengli Petroleum Adminitration Bureau, Dongying 257064, China
  • Received:2009-08-25 Revised:2009-09-11 Online:2010-06-05 Published:2010-06-05
  • Supported by:

    国家重点基础研究发展计划(“973”计划) 资助项目(2003CB214601),中国博士后科学基金资助项目(20090461267).

摘要:

储层分选性是反应储层物性、 均质程度及沉积环境好坏的重要标志. 分选系数一般是通过实验室的粒度分析(粒度分选)或压汞试验(孔喉分选)来得到,利用核磁共振评价储层孔喉分选性多是通过建立T2g与常规分选系数之间的关系公式来得到. 在深入研究常规分选系数计算原理的基础上,结合T2谱累积曲线对储层分选性的反应,提出了2种不依附于实验室分析、可由单个样品来定量评价储层分选性的新方法,并且取得了与其他方法较为一致的评价结果. 该项研究打破了录井不能定量评价储层分选性的局面,对于快速指导油气勘探开发具有十分重要的意义.

关键词: 核磁共振录井, 分选系数, 毛管压力曲线, T2谱累积曲线, 定量评价

Abstract:

Reservoir separation factor is an important index relfecting petrophysics, heterogeneity and depositional environment of the reservoir. Separation factor is usually calculated through grading analysis (grain size sorting) and mercury intrusion method (pore throat sorting) in laboratory. Pore throat sorting calculated by NMR method was usually based on calibration curve relating T2g to separation factor measured by conventional methods. Based on the theory underlying conventional separation factor calculation, and combined with sorting characteristics associated with cumulative T2 distribution, two new methods were proposed to evaluate reservoir sorting on a single sample. The calculation results of these two methods were found to be consistent with those obtained by other methods.

Key words: MR-ML, separation factor, capillary pressure curve, cumulative T2 distribution, quantitative evaluation

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