公开(公告)号：US20140251603A1

公开(公告)日：2014-09-11

申请号：US14204686

申请日：2014-03-11

Applicant: Weatherford/Lamb, Inc.

Inventor： Marius Raducanu ,  Yildirim Hurmuzlu ,  Sorin Gabriel Teodorescu

IPC: E21B47/09

CPC classification number: E21B47/09 ,  E21B33/16 ,  E21B47/12

Abstract: The disclosure describes a system and a method for locating a cement plug within a wellbore. The system includes a signal transmitter mounted to the cement plug, a receiver at the opening to the wellbore, one clock positioned on the cement plug and in communication with the transmitter, a second clock which is synchronized to the first clock and in communication with the receiver, and a controller for triggering the transmittal of the signal.

Abstract translation: 本公开描述了一种用于在井筒内定位水泥塞的系统和方法。 该系统包括安装到水泥塞的信号发射器，在井眼开口处的接收器，位于水泥塞上并与发射器通信的一个时钟，与第一时钟同步并与第一时钟通信的第二时钟 接收器和用于触发信号传送的控制器。

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

IPC: F01C20/28 ,  G01M15/14 ,  E21B47/01 ,  G01P3/44 ,  E21B4/02 ,  E21B7/00

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。