| 摘要 |
FIELD: mining.SUBSTANCE: switching device operating as part of borehole telemetry system with independent power supply, containing connected with telemetry system non-magnetic housing, a permanent magnet and computing device. Non-magnetic housing is installed inside the drill pipe with the help of centraliser. Outside the non-magnetic housing or centraliser there is petal made of elastomer material whose dimensions are selected as to provide its displacement during movement of the borehole fluid. On petal there is a permanent magnet. Inside the non-magnetic housing on the straight line parallel to the longitudinal axis of housing, and at equal distance from the permanent magnet there are two magnetometers connected with computer, which output is connected to the input of telemetry system.EFFECT: increased service life of the independent power source by reducing power consumption.1 cl, 2 dwg |
