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1. 发明授权

US09587453B2 Hydraulic jar and a flow control device usable in the hydraulic jar 有权
标题翻译：液压罐和可用于液压罐的流量控制装置
公开(公告)号：US09587453B2
公开(公告)日：2017-03-07
申请号：US14223302
申请日：2014-03-24
申请人： Access Downhole LP
发明人： Harold Robinson Wesson, Jr. , Shea Keller Wesson
IPC分类号： E21B31/113
CPC分类号： E21B31/1135 , E21B31/113
摘要： A hydraulic jar comprising a housing and a mandrel slidably disposed in the housing forming an annular space therebetween. In an embodiment, the hydraulic jar comprises a flow control device fixedly connected to the mandrel and disposed in the annular space to divide the annular space into a first portion and a second portion. The flow control device comprises an annular member slidably positioned about the mandrel, wherein the annular member comprises a face, an inside surface, and an outside surface, wherein the outside surface of the annular member is disposed against an inside surface of the tubular housing, wherein the outer surface of the annular member and the inside surface of the tubular housing allow fluid flow therebetween at a first flow rate, wherein the inside surface of the annular member and the retaining surface of the retaining assembly allow fluid flow therebetween at a second flow rate.
摘要翻译：一种液压罐，包括壳体和可滑动地设置在壳体中的心轴，其中形成环形空间。在一个实施例中，液压缸包括固定地连接到心轴并设置在环形空间中以将环形空间分成第一部分和第二部分的流量控制装置。流量控制装置包括围绕心轴可滑动定位的环形构件，其中环形构件包括面，内表面和外表面，其中环形构件的外表面抵靠管状壳体的内表面设置，其中所述环形构件的外表面和所述管状壳体的内表面允许流体以第一流量在其间流动，其中所述环形构件的内表面和所述保持组件的保持表面允许流体在第二流动下流动率。

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