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直流电井间三维直接成像
THE 3-D IMMEDIATE CROSSHOLE TOMOGRAPHY WITH DIRECT CURRENT
【摘要】 在分析电性不均匀体对电位影响的基础上,确定了直接成像的参数。该参数在井间没有电性不均匀体时,等于背景电阻率,而当井间存在低阻或高阻不均匀体时,则小于或大于背景电阻率,很好地反映了井间不均匀体的电阻率性质和位置。然后介绍了井与井之间成像参数的插值方法和用SURFER软件成像的方法,并给出了几个直接成像的例子。
【Abstract】 By analyzing the influence of inhomogeneities on potential, we certain a parameter used to image immediately. This parameter is equal to the background resistivity when there are no inhomogeneities between the holes. Furthermore, this parameter is more than the background resistivity when a conductive inhomogeneity between the holes, or less than that when a resistive inhomogeneity. So, this parameter well reflects the electrical property and location of the inhomogeneity. Then, we introduce a method to interpolate the parameters into the space between the holes, and a method to image with the SURFER software. At last, this paper gives several examples of immediate imaging.
【Key words】 direct current; resistivity; potential; crosshole tomography; immediate imaging;
- 【文献出处】 物探化探计算技术 ,Computing Techniques for Geophysical and Geochemical Exploration , 编辑部邮箱 ,2003年01期
- 【分类号】P631
- 【被引频次】15
- 【下载频次】205