西南石油大学学报(自然科学版) ›› 1993, Vol. 15 ›› Issue (3): 36-42.DOI: 10.3863/j.issn.1000-2634.1993.03.005

• 地质勘探 • 上一篇    下一篇

应用孔喉体积-渗透率贡献分布曲线确定流动孔喉半径下限值

赵松林

  

  1. (石油勘探系)
  • 收稿日期:1992-06-26 修回日期:1900-01-01 出版日期:1993-08-20 发布日期:1993-08-20
  • 通讯作者: 赵松林

DETERMINATION OF CUT-OFF VALUE OF EFFECTIVE THROAT RADIA BY PERMEABILITY-CONTRIBUTION CURVE

ZHao Song-lin
  

  1. (Dept. of Oil E.rploration)
  • Received:1992-06-26 Revised:1900-01-01 Online:1993-08-20 Published:1993-08-20
  • Contact: ZHao Song-lin

摘要: 我国非均质性强、低孔隙度、低渗透率油气层,确定其流动孔喉半径下限值十分困难。我们对吐哈盆地丘陵油田Jzs油层的研究,找到了一种既才便又简单的析方法,用孔喉体积一渗透率贡献分布曲线可以较准确地确定这类油层流动孔喉半径下限值.本文介绍了该方法的理论基础,求值过程和准确性检验.该方法求得的油气层流动孔喉半径下限值及其它相应的参数,在油气层定量评价中,获得了较满意的效果.

关键词: 孔喉体系 孔隙体积 渗透率 孔喉半径 束缚水饱和度

Abstract: The reservoirs in most continental basins in China are of relatively intensive heterogene-ity,common(y of low porosity and low permeability. It is very difficult and complicated to determine the cut-off value of effective throat radia for such reservoirs by conventional meth-ods. Based on our study of the reservoirs of J,S formation in Tu-Ha basin,we propose here a new simple and easy method,by which the cut-off value of effective throat radia for reser-voirs with characters mentioned above is accurately determined from the pore-throat volume versus permeability-contribution curve,and present the theoretical basis,the calculation pro-cedure and the accuracy check of the method. The result obtained by this method is satisfac-tory in quantitative evaluation of reservoirs.

Key words: Pore-throat volume Pore-throat system Permeabili

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