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| 三维井地电阻率有限元数值模拟及反演 | |
| 引用本文： | 刘申芬,李天成,慕洪涛.三维井地电阻率有限元数值模拟及反演[J].物探与化探,2009,33(1):88-90. |
| 作者姓名： | 刘申芬 李天成 慕洪涛 |
| 作者单位： | 1. 河南省有色金属地质矿产局五大队,河南,郑州,450042 2. 有色金属矿产地质调查中心,北京,100012 3. 郑州测绘学院,河南,郑州,450052 |
| 摘 要： | 油气资源和矿产资源勘探中，常需要较大的勘探深度和高的深部分辨能力，充分利用现有钻孔的三维井地电阻率成像技术能够适应于这种要求。通过设计一个高阻水平板状体模型，利用Ansys有限元软件对模型进行三维井地电阻率法有限元正演计算，并将模拟的响应视电阻率作为反演的输入，结合平滑约束最小二乘反演，分析了异常特征和分布规律，其结论和认识具有一定实用价值。 |
| 关 键 词： | 三维井地电阻率法 有限元法 油气资源勘探 地质模型 |
| 收稿时间： | 2008-02-13 |
THE NUMERICAL MODELING AND INVERSION OF 3D BOREHOLE-SURFACE RESISTIVITY FINITE ELEMENT |
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| LIU Shen-fen,LI Tian-cheng,MU Hong-tao.THE NUMERICAL MODELING AND INVERSION OF 3D BOREHOLE-SURFACE RESISTIVITY FINITE ELEMENT[J].Geophysical and Geochemical Exploration,2009,33(1):88-90. | |
| Authors: | LIU Shen-fen LI Tian-cheng MU Hong-tao |
| Institution: | 1. No. 5 Geological Party, Henan Bureau of Geological Survey for Nonferrous Metals, Zhengzhou450042, China; 2. China Geological Survey Center for Nonferrous Metals Resources, Beijing 100012, China; 3. Zhengzhou College of Mapping and Surveying, Zhengzhou450052, China |
| Abstract: | Relatively large exploration depth and good resolution at depth are usually required in oil gas and mineral resources exploration. The borehole surface electrical resistivity tomography technique can satisfy the demand. A typical synthetic geological model was designed in this paper, which is based on the simulation of the finite element method by using Ansys FEM software. The response apparent resistivity of the model acts as the input of the inversion. According to the results obtained by the smooth constrained least square inversion method, this paper describes characteristics and distribution of the anomalies. The results and the recognition obtained obviously have some practical values. |
| Keywords: | 3D borehole surface resistivity survey Finite Element Method (FEM) forward numerical modeling inversion |
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