This equipment can be used to calculate the vertical and horizontal separation between the two boreholes.

It includes a rotating magnetic sub, a downhole tool and a surface gear. The rotating magnetic sub worked as signal source,

and the downhole tool worked as the signal receiver, and the surface gear worked as data communication, and it also provided power supply to the downhole tool.

The surface gear software is used for receiving the data to save the rotating magnetic field data.

 twin horizontal wells ranging software, with the data file, build a 2D imaging of the magnetic field component via the rotating magnetic field angle and bit depth.