公开(公告)号：US09506324B2

公开(公告)日：2016-11-29

申请号：US13440823

申请日：2012-04-05

申请人： Donald G. Kyle ,  Matthew J. Merron ,  Michael L. Fripp

发明人： Donald G. Kyle ,  Matthew J. Merron ,  Michael L. Fripp

IPC分类号： E21B23/00 ,  E21B34/06 ,  E21B41/00 ,  E21B47/09 ,  E21B47/01

CPC分类号： E21B41/00 ,  E21B23/00 ,  E21B34/06 ,  E21B47/011 ,  E21B47/0905

摘要： A system for use with a subterranean well can include a magnetic sensor, a magnetic device which propagates a magnetic field to the magnetic sensor, and a barrier positioned between the magnetic sensor and the magnetic device. The barrier can comprise a relatively low magnetic permeability material. A method of isolating a magnetic sensor from a magnetic device in a subterranean well can include separating the magnetic sensor from the magnetic device with a barrier interposed between the magnetic sensor and the magnetic device, the barrier comprising a relatively low magnetic permeability material. A well tool can include a housing having a flow passage formed through the housing, a magnetic sensor in the housing, and a barrier which separates the magnetic sensor from the flow passage, the barrier having a lower magnetic permeability as compared to the housing.

摘要翻译： 与地下井一起使用的系统可以包括磁传感器，将磁场传播到磁传感器的磁性装置，以及位于磁传感器和磁性装置之间的障碍物。 阻挡层可以包括相对较低的磁导率材料。 将磁传感器与地下井中的磁性装置隔离的方法可以包括将磁传感器与磁性装置分离，其中介于磁性传感器和磁性装置之间的屏障，阻挡层包括相对较低的磁导率材料。 井具可以包括具有通过壳体形成的流动通道的壳体，壳体中的磁传感器以及将磁传感器与流动通道分离的屏障，所述屏障与壳体相比具有较低的磁导率。