BOTTOMHOLE TELEMETERING SYSTEM WITH WIRED COMMUNICATION CHANNEL Russian patent published in 2007 - IPC E21B47/12 

FIELD: well logging, particularly to measure bottomhole parameters during well drilling.

SUBSTANCE: system comprises drilling string with electric divider arranged in upper drilling string part, turbogenerator, measuring module, sending module and centralizers, as well as bottomhole motor with drilling bit and wired communication channel having joint unit. The system additionally has diamagnetic pipe installed in lower part of drilling string. Turbogenerator, measuring module, sending module and centralizers are placed in diamagnetic pipe. Wired communication channel has electrode fixed in drilling string and arranged at electric divider output. Wired communicational channel branch between sending module and joint unit passes in space between bodies of above modules and diamagnetic body. Communication wire passes through centralizers. Joint module is installed over diamagnetic pipe.

EFFECT: simplified technology of telemetering system lowering in well, improved operational reliability and simplified structure.

2 dwg