CPC H01F 38/14 (2013.01) [E21B 17/0283 (2020.05); E21B 47/01 (2013.01); H02J 50/10 (2016.02); H04B 5/0037 (2013.01); H01F 2038/143 (2013.01)] | 17 Claims |
1. A system for use in a well, comprising:
a well casing having an interior surface and an exterior surface;
a male inductive coupler positioned at a desired interior location within the well casing along the interior surface, the male inductive coupler comprising a male inductive coupler coil; and
a female inductive coupler separate from the well casing, sized to slide along the exterior surface, and positioned at a desired exterior location external to the well casing along the exterior surface, the female inductive coupler comprising a female inductive coupler coil;
the female inductive coupler coil being generally radially aligned with the male inductive coupler coil to enable inductive transfer of signals across the well casing;
wherein an axial end of the female inductive coupler is positioned proximate and axially aligned with an axial end of a casing coupling connected to the well casing and wherein the system further comprises a spring positioned axially between the axial end of the casing coupling and the axial end of the female inductive coupler.
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