WELL COMPLETION WITH SINGLE-WIRE DIRECTION SYSTEM Russian patent published in 2019 - IPC E21B47/228 E21B47/232 

FIELD: physics.

SUBSTANCE: invention relates to a borehole location determination system. Said system comprises: current source; earthing terminal, wherein the ground terminal is electrically connected to the current source, the ground terminal is grounded on the earth surface; conductor of reference signal, wherein conductor of reference signal is electrically connected to current source, conductor of reference signal is introduced into support well. Support well also comprises intermediate casing string, wherein intermediate casing string extends from earth surface to horizontal section of support well, intermediate casing string also includes breaking of electric circuit of intermediate casing string, intermediate casing string is electrically conductive between rupture of electric circuit of intermediate casing string and downhole end of intermediate casing string, wherein in intermediate casing string there is a pipe structure, which includes rupture of electric circuit of pipe string, wherein pipe structure is introduced into support well, wherein pipe structure has tubular end of pipe structure and pipe structure is electrically conductive between electric circuit break and bottom face of pipe structure. System also comprises: electrical connection between tubular structure and reference signal conductor in gap from pipe string electrical circuit break to tubing end of pipe structure; electric connection between the pipe structure and the support well in the interval from the pipe string electrical circuit break to the pipe end of the pipe structure; and magnetic sensors located on the outside of the support well.

EFFECT: technical result consists in improvement of efficiency of borehole location determination.

28 cl, 11 dwg