Author(s)

Wangwang Wang¹, Changhong Lin¹, Handong Tan¹, Honglei Liu²

¹School of Geophysics and Information Technology, China University of Geosciences, Beijing, China.
²SINOPEC Petroleum Exploration and Production Research Institute, Beijing, China.

In recent years, the anisotropic study has become a hot topic in the field of electromagnetics. Currently, inversion technologies of transient electromagnetic sounding data are mainly based on the case of an isotropic medium. However, the actual underground electrical structure tends to be complicated and anisotropic. It is often found that the isotropic inversion technologies do not lead to good results for field transient electromagnetic sounding data. We have developed an algorithm for calculating the transient electromagnetic response in a layered medium with azimuthal anisotropy. An occam inversion algorithm has also been implemented to invert the transient electromagnetic data induced by a grounded horizontal electric dipole in a layered medium with azimuthal anisotropy. Synthetic examples demonstrate the stability and validity of the inversion algorithm. Experimental results show different data for inverting have great influence on the inversion results.

Azimuthal Anisotropy, Layered Medium, Occam Inversion, Horizontalelectric Dipole, Transient Electromagnetic Data

Wang, W. , Lin, C. , Tan, H. and Liu, H. (2016) Occam Inversion of Transient Electromagnetic Data in a Layered Medium with Azimuthal Anisotropy. International Journal of Geosciences, 7, 915-927. doi: 10.4236/ijg.2016.77068.