西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (2): 5-8.DOI: 10.3863/j.issn.1000-2634.2002.02.002

• 地质勘探 • 上一篇    下一篇

NMR束缚流体体积确定方法及其应用条件

阙洪培 雷卞军
  

  1. (西南石油学院石油工程学院 ,四川 南充 637001)
  • 收稿日期:2001-05-30 修回日期:1900-01-01 出版日期:2002-04-20 发布日期:2002-04-20
  • 通讯作者: 阙洪培

METHOD OF DETERMINING BULK IRREDUCIBLE FLU-ID VOLUME WITH NMR AND IT’S CONSTRAINS IN AP-PLICATION

QUE Hong-pei LEI Bian-jun.    

  1. (Southwest Petroleum Institute, Nanchong Sichuan 637001, China)
  • Received:2001-05-30 Revised:1900-01-01 Online:2002-04-20 Published:2002-04-20
  • Contact: QUE Hong-pei

摘要: NMR测井不能直接测定束缚流体饱和度(Swir)和束缚总流体(BVI)体积,而是根据T2分布和有效孔隙度(Φe)间接确定。其精度取决于解释T2分布所选用的方法及其相关参数。NMR测井确定BVI方法有T2截止值方法,频谱BVI(简称SBVI)方法和BVI加权函数方法。

关键词: 核磁共振, 束缚水饱和度, 频谱BVI, 加权函数

Abstract: Irreducible water saturation (Swir) and bulk irreducible fluid volume (BVI) from neclear megnetic resounace logging are not directly measured quantities but are derived from theT2 distribution and the effective porosity. Thus, the acurracy of SwirandBVIis dependent on the methods and associated pa-rameters used in the interpretation of theT2distribution data.The methods used in NMR logging include theT2cut-off value,T2spectraBVIandBVIweighting function.

Key words: neclear magnetic resounace, irreducible water saturation, frequency spectrumBVI, weighting function

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