OVER-BIT MODULE Russian patent published in 2020 - IPC E21B47/12 

FIELD: geophysical survey.

SUBSTANCE: invention relates to field geophysical survey and is intended for measurement of downhole parameters of well in process of directional and horizontal drilling, in particular, to devices that enable to obtain information in close proximity to bit. Over-bit module comprises a housing with a central bore formed of a coupling and a nipple portion separated by a conical threaded surface through an electrical insulating material, and electronic circuit boards placed in the recesses of the hermetic housing part, closed on the outer side by a protective casing, wherein power supply is arranged in separate housing and installed in flow section of over-bit module. Power supply housing consists of two parts connected along conical threaded surface with electrically insulating material in thread gap, one of the parts of the power supply housing is connected to the hermetic part of the body of the over-bit module, in which the electronic boards are placed, and the other part of the power supply housing is connected to the lower part of the over-bit module.

EFFECT: prolongation of the term of use of the over-bit module without export to the service center due to possibility of replacement of the battery pack at the drilling unit.

1 cl, 1 dwg