LOGGING TELEMETER SYSTEM USED DURING WELL DRILLING Russian patent published in 2007 - IPC E21B47/12 

FIELD: well drilling and survey, particularly to transmit well drilling information.

SUBSTANCE: system comprises body with electric column separator, as well as turbogenerator and electronic unit arranged in the separator. Turbegenerator is connected to upper sub of electric column separator. Electronic unit is fastened to lower sub thereof. Air-tight cavities are created in subs adjoining turbegenerator and electronic unit outputs. The air-tight cavities are provided with sealed leads extending from outer body side to the cavities. Connection wires, which connect turbegenerator, electronic unit and electric column separator subs, pass via air-tight cavities through sealed leads, subs and insulation layer of electric column separator. Drilling mud orifices are made in sub bodies. Throttle may be serially connected to turbogenerator winding, wherein electric column separator body is used as throttle core.

EFFECT: increased reliability and decreased diameter of telemetering system.

1 dwg