Title :
Analysis of electromagnetic well logging tools for oil and gas exploration using finite volume techniques
Author :
Novo, M.S. ; da Silva, L.C. ; Teixeira, F.L.
Author_Institution :
Nat. Inst. of Metrol., Xerem
fDate :
Oct. 29 2007-Nov. 1 2007
Abstract :
We analyze the response of logging-while-drilling (LWD) tools for oil exploration in complex three-dimensional borehole environments using finite-volume (FV) algorithms in cylindrical coordinates. Both eccentric boreholes and dipping beds scenarios are considered. In order to model eccentric boreholes, a face-based locally-conformal FV scheme is employed. We implement two distinct FV approaches, viz., the direct-field formulation and the coupled vector-scalar potentials formulation. The numerical results show that both FV approaches provide accurate results for the examples considered.
Keywords :
electromagnetic fields; finite volume methods; geophysical prospecting; oil drilling; well logging; complex three-dimensional borehole environment; coupled vector-scalar potential formulation; cylindrical coordinates; dipping beds; eccentric boreholes; electromagnetic well logging; face-based locally-conformal FV method; finite volume algorithms; gas exploration; logging-while-drilling tools; oil exploration; Earth; Electromagnetic analysis; Finite difference methods; Geometry; Linear systems; Magnetic fields; Maxwell equations; Petroleum; Time domain analysis; Well logging; Finite volume methods; Helmholtz decomposition; Maxwell’s equations; well-logging;
Conference_Titel :
Microwave and Optoelectronics Conference, 2007. IMOC 2007. SBMO/IEEE MTT-S International
Conference_Location :
Brazil
Print_ISBN :
978-1-4244-0661-6
Electronic_ISBN :
978-1-4244-0661-6
DOI :
10.1109/IMOC.2007.4404343