Study on Borehole-To-Ground Resistivity Forward Modeling Based on COMSOL
详细信息
- 责任者：Feng Shuo (College of Geophysics and Information Engineering ; China University of Petroleum ; Beijing 102249 ; China) ; Liu Dejun
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2013
- 卷期：20(5)
- 关键词：电阻率测井 ; resistivity logging ; 正演模拟 ; forward modelling
- 页码：p.589-592
- 图表：5 illus., 1 table, 17 refs.
- 分类号：1600
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
With the deepening of petroleum development in our country,most of oilfields have entered high water cut development period.The borehole-to-ground resistivity method is a new electrical prospecting method,which has less influence on the formation and low cost of measurement,and becomes gradually one of key technologies for researching the distribution of remaining oil.Therefore,it has very important significance to study the borehole-to-ground resistivity forward modeling and inversion interpretation algorithm.Firstly,this paper established a forward modeling by using finite element method(FEM),conducted mathematical analysis and selected reasonable boundary conditions.Secondly,through changing the distribution of high resistivity anomaly and low resistivity anomaly in model,it analyzed the effect of anomaly position on the surface potential distribution.Finally,according to the model to deal with problems,it set up reasonable boundary conditions,made the numerical simulation by COMSOL and got the potential distribution.The results of numerical experiments show that the numerical simulation model of borehole-to-ground resistivity established based on COMSOL and using the mixed boundary condition can get a high precision and fast convergence speed.Therefore,the application of COMSOL in borehole-to-ground resistivity forward research is effective and feasible.
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