A rapid forward model for magnetic ranging of the relief well to a blowout well

3. Models comparison and validation: Fig. 5 4.1 Effect of layered formation resistivity on signal intensity: Figs. 6-9 4.2 Effect of emission electrode size and location on signal intensity: Figs. 10-14 4.3 Effect of blowout well casing length and diameter on signal intensity: Figs. 15-16 4.4 Effect of relief well casing length and location on signal intensity: Figs. 17-18 4.5 Effect of deviation angle of relief well on signal intensity: Figs. 19-20