Reconstruction Formation Conductivity Distribution Using Inverse Method Based on 6FF40 Induction Measurement

Reconstruction of formation conductivity distribution for 6FF40 measurement information using an inverse method was described in this paper. Based on the internal and external electrical field integral equation, the inversion equation is derived. Then, the Numerical ModeMatching is used to solve the logging response of the 6FF40. Numerical simulations show that satisfactory inversion result of the complicated formation can be obtain from the incomplete measurement of the 6ff40. In addition, prior information, the radial and vertical resolution of the 6FF40 is also investigated.