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公开(公告)号:US20150167466A1
公开(公告)日:2015-06-18
申请号:US14405561
申请日:2013-06-07
Applicant: WEATHERFORD/LAMB, INC.
Inventor: Sorin Gabriel Teodorescu , Scott D. Birse , Albert C. Odell, II
CPC classification number: F01C20/28 , E21B4/02 , E21B7/00 , E21B47/00 , E21B47/01 , F03C2/08 , F04C2/1071 , F04C13/008 , F04C2240/81 , F04C2270/052 , F05C2201/0466 , G01M15/14 , G01P3/44
Abstract: A tachometer for a downhole motor includes: a tubular housing having a coupling for connection to a housing of the motor; and a probe. The probe: has a coupling for connection to a rotor of the motor, is movable relative to the tachometer housing, and has at least a portion disposed in a bore of the tachometer housing. The tachometer further includes electronics disposed in the tachometer housing and including: a battery; one or more proximity sensors for tracking an orbit of the probe; and a programmable logic controller (PLC). The PLC is operable: to receive the tracked orbit, and at least one of: to determine an angular speed of the probe using the tracked orbit, and to forecast a remaining lifespan of the motor using the tracked orbit.
Abstract translation: 用于井下电动机的转速计包括:管状壳体,其具有用于连接到电动机的壳体的联接器; 和探针。 探针:具有用于连接到电动机的转子的联接器,可相对于转速计壳体移动,并且具有设置在转速计壳体的孔中的至少一部分。 转速计还包括设置在转速计壳体中的电子器件,包括:电池; 用于跟踪探头的轨道的一个或多个接近传感器; 和可编程逻辑控制器(PLC)。 PLC可操作:接收跟踪的轨道,以及以下中的至少一个:使用跟踪的轨道确定探测器的角速度,并且使用跟踪的轨道来预测电动机的剩余寿命。