| 垂直有限线源三维地电场有限差分正演研究 |
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| 引用本文： | 徐凯军,李桐林.垂直有限线源三维地电场有限差分正演研究[J].吉林大学学报(地球科学版),2006,36(1):137-141,147. |
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| 作者姓名： | 徐凯军 李桐林 |
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| 作者单位： | 吉林大学,地球探测科学与技术学院,长春,130026;吉林大学,地球探测科学与技术学院,长春,130026 |
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| 基金项目： | 国土资源部科技攻关项目 |
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| 摘 要： | 利用套管供电,通过地表观测电位研究油田注水分布和剩余油分布在油田开发中的应用。针对垂直有限线源,首先推导了线电流源的边界条件,利用有限差分实现了三维地电场的正演。正演结果表明:在全井套管供电时,地表观测电位主要受浅层电阻率不均匀性的影响;在射孔段供电时,地表观测电位主要反映射孔段的电阻率分布。
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| 关 键 词： | 有限差分 垂直有限线电流源 套管供电 射孔段 |
| 文章编号： | 1671-5888（2006）01-0137-05 |
| 收稿时间： | 2005-04-05 |
| 修稿时间： | 2005-04-05 |
The Forward Modeling of Three-Dimensional Geoelectric Field of Vertical Finite Line Source by Finite-Difference Method |
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| XU Kai-jun,LI Tong-lin.The Forward Modeling of Three-Dimensional Geoelectric Field of Vertical Finite Line Source by Finite-Difference Method[J].Journal of Jilin Unviersity:Earth Science Edition,2006,36(1):137-141,147. |
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| Authors: | XU Kai-jun LI Tong-lin |
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| Institution: | Collegeof GeoExploration Science and Technology,Jilin University,Changchun 130026,China |
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| Abstract: | A resistivity method with vertical line source has been used to study the distribution of injection water and surplus oil. The authors first infered the boundary condition for line source,then realised the forward calculation with finite-difference method.The forward calculation shown that when providing current through whole casing pipe,the electrical potential on surface is mainly effected by shallow resistivity anomaly,whereas when providing current only at gun perforation position,the electrical potential is on surface mainly effected by corresponding resistivity of gun perforation position. |
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| Keywords: | finite-difference vertical finite line source providing current through casing pipe gun perforation position |
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