Theory Analysis of Three-Component Induction Resistivity Log

This paper shows enumerated electrical field is divided into primary field and secondary field according to two Maxwell circuitation equations combined with fact of induction resistivity log, and the primary field can be solved by analytic geometry method, the secondary field can be solved by finite difference Crisscross grid method. Conductivity selection of primary field and secondary field computation formula of three-component induction resistivity log is developed based on finite difference crisscross grid method in this paper.