石油学报 ›› 2000, Vol. 21 ›› Issue (1): 55-59.DOI: 10.7623/syxb200001010

• 油田开发 • 上一篇    下一篇

用微观模型组合实验研究最低吸水层渗透率

李劲峰, 曲志浩, 孔令荣   

  1. 西北大学油藏地质及油层物理研究所, 陕西西安710069
  • 收稿日期:1998-12-17 修回日期:1999-05-04 出版日期:2000-01-25 发布日期:2010-05-21
  • 作者简介:李劲峰,男,1972年1月生.1996年毕业于西北大学地质系,获硕士学位.现为西北大学博士研究生.通讯处:陕西省西安市.

STUDY ON THE MINIMUM PERMEABILITY OF WATER DRAWING LAYER-BY USING MULTIMODEL EXPERIMENT

LI Jin-feng   

  1. Northwest University
  • Received:1998-12-17 Revised:1999-05-04 Online:2000-01-25 Published:2010-05-21

摘要: 利用不同微观模型之间的物性差异及其直观性的特点,设计了微观模型组合实验,模拟油层注水,以研究储层非均质对油水运动的影响.通过模型组合实验,可以确定一个合注层段内不吸水小层的渗透率下限,即最低吸水层渗透率Kwmin,研究Kwmin与合注层段中最大渗透率值Kmax及注水压力梯度之关系,从而可以进一步根据油层的实际注水压力梯度及用该井取心、测井资料确定的渗透率剖面,求取一个合注层段、一口井、一个油藏的最低吸水层渗透率.最低吸水层渗透率值可以用来进行油藏注水开发效果分析,研究油层剩余油分布.应用Kwmin对鄯善油田三间房组油层部分注水井合注层段的吸水状况做了初步分析,获得了比较满意的结果.可以预料对最低吸水层渗透率的深入研究,将获得该参数更广泛的用途.

关键词: 最低吸水层渗透率, 微观模型, 模型组合实验, 注水, 非均质性

Abstract: Multimodel experiment simulating reservoir water flooding and made up of several different models in physical property is recommended to study the effect of heterogeneity of a reservoir in flooding process. A new parameter-the minimum permeability of water drawing layer, Kwmin of multilayer-injected interval was measured by multimodel experiment and the relations among Kwmin and maximum permeability of multilayer-injected interval and water flooding pressure gradient were determined by which the Kwmin of other wells of the reservoir can be estimated. It is found that the Kwmin is very helpful to predict the water-flooding effect of a reservoir and the distribution of residual oil. The satisfactory results from application of Kwmin presented in this paper were obtained in Sanjianfang reservoirs, Shanshan Oilfield. It is obviously that further study will lead to extensive application of this new parameter.

Key words: minimum permeability of water drawing layer, micromodel, multimodel experiment, flooding, heterogeneity

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