DOWNHOLE TELEMETRY DEVICE Russian patent published in 2021 - IPC E21B47/13 H01F27/30 H01F30/16 

FIELD: geophysics.

SUBSTANCE: invention relates to exploration and commercial geophysics and is intended for measuring geophysical and technological parameters in the process of drilling and exploring the downholes. The device contains a body made of electrically conductive material with a central hole for the passage of the washing liquid, with threads for installation in the drill string, in the sealed compartments of which sensors, electronic components and a power source are located. In the body cavity to the outside and coaxially mounted toroidal core made of material of high magnetic permeability and winding, the ends of which are connected to the electronic unit, the remaining space of the recess is filled with insulating material.

EFFECT: increased reliability of the device and the provision of two-way exchange of telemetric information.

8 cl, 2 dwg