Rigorous 3D inversion of marine magnetotelluric data in offshore hydrocarbon exploration
Three-dimensional (3D) magnetotelluric (MT) inversion is an emerging technique for offshore hydrocarbon (HC) exploration. Hydrocarbon-bearing formations typically have a resistivity much higher than those of conductive sea-bottom sediments, which makes an EM method an effective HC exploration technique. In this paper we introduce a new approach to 3D inversion of MT data for offshore HC exploration. The Tikhonov regularization and physical constraint have been used to obtain a stable and reasonable solution of the inverse problem. For numerical experiments we simulate complex and commonly occurring offshore geological synthetic models. We also conduct the inversion of the Gemini Prospect MT data collected by the Scripps Institution of Oceanography (SIO) in the Gulf of Mexico. The inversions of synthetic 3D MT data and Gemini Prospect field data demonstrate that we can map the anomalous structures with reasonable accuracy.
3D inversion marine MT offshore
Michael S. Zhdanov Le Wan Arun Kumar Alex Gribenko Martin Cuma Kerry Key Steven Constable
Department of Geology and Geophysics, University of Utah, USA Scripps Institution of Oceanography, California, USA
国际会议
The 19th International Workshop on Electromagnetic Induction in the Earth(第十九届国际地球电磁感应学术研讨会)
北京
英文
745-750
2008-10-23（万方平台首次上网日期，不代表论文的发表时间）