Application of Unstructured Rectangular Meshes for Borehole Electrical Survey Non-Stationary Problems Solution by Vector Finite Element Method

Quick and exact schemes for the electromagnetic field modeling are required for effective use of electrical survey methods. In such problems, problem domains usually have large dimensions and represent as horizontally layered mediums, which can contain axisymmetric objects or parallelepiped 3D objects. In this paper the technique of the first-order vector finite element conformation using the transition matrix is described. It is as follows. On all finite elements of problem domain four vector linear local basis functions are defined. The conformation occurs at the stage of the global matrix assembling.