Abstract: It is technically difficult to estimate the permeability of sandstone reservoir in the development stage,because a little data can be used.The logs acquisited in exploration stage only recorded the permeability information before reservoir developed.In the reservoir development stage,some technique measures have been taken to enhance oil recovery,such as acidizing,hydrofracturing,water injection,et al.These techniques have changed the permeability of reservoir a lot.The variation of the reservoir permeability are not measured.The data which is helpful to describe the updating permeability of a developing reservoir is only water injection profiles in the water injection wells.It is qualitative,not quantitative,to estimate the permeability using water injection profiles,because of its low vertical resolution,the cross flow effect,and the isotope build up.The resistivity logs are integrated(lateral log 8,medium investigation induction log ILm,and deep investigation induction log ILd)in exploration stage and the water injection profile in development stage,a new method for permeability estimation is proposed.The vertical resolutions of ILm and ILd are enhanced by using Walsh function method;the mud invasion radius is estimated with lateral log 8,ILm and ILd;the permeability is calculated by mud invasion radius and water injection profile.This method is applied to three water injection wells in Zhongyuan oil field,China,The permeability is 100m interval for each well is estimated.The invasion radius and the permeability are mapped and interpreted,the results are satisfied.

Key words: permeability, exploration well logging, production well logging, sandstone reservoir, enhanced oil recovery, prediction

摘要： 在油田开发过程中,因酸化、压裂、注水和调剖等采油工艺的影响,储层的物理状态发生了很大的变化,勘探测井资料不再真实反映当前储层的状态,勘探阶段估算渗透率的模型和方法不再适用于开发阶段的储层.本文把勘探测井资料(八侧向、中感应和深感应电阻率)和生产测井资料(吸水剖面)结合起来,建立了开发阶段砂岩储层渗透率动态预测的模型和方法.用沃尔什函数法提高中深感应电阻率测井曲线的纵向分辨率;用八侧向、中感应和深感应等三条电阻率曲线估算泥浆侵入半径;用侵入半径和吸水剖面估算渗透率.对中原油田的三口注水井资料进行了处理,在每口井中预测了100m井段的渗透率,绘出了侵入半径和渗透率曲线,并进行了对比解释,获得了满意的结果.

关键词: 渗透率, 勘探测井, 生产测井, 砂岩储层, 提高采收率