公开(公告)号：US09593547B2

公开(公告)日：2017-03-14

申请号：US13954793

申请日：2013-07-30

申请人： NATIONAL OILWELL DHT, L.P.

发明人： Andrew D. Malcolm ,  Roman Kvasnytsia ,  Justin Lockhart

IPC分类号： E21B28/00

CPC分类号： E21B28/00

摘要： A shock assembly for use with a motion tool deployable into a wellbore by a conveyance. The motion tool includes a mandrel operatively connectable to the conveyance or the motion tool, a housing operatively connectable to the motion tool or the conveyance (the housing having an opening to slidingly receive the mandrel and including a first and a second spring portion), a first spring slidably positionable in the first spring portion and having a first spring stiffness, and a second spring slidably positionable in the second spring portion having a second spring stiffness. The second spring stiffness being less than the first spring stiffness such that the first and second springs selectively engage as the housing slidingly moves about the mandrel in response to forces applied to the system to selectively restrict movement between the mandrel and the housing whereby the motion tool is vibrated.

摘要翻译： 一种用于通过运输工具可部署到井筒中的运动工具使用的冲击组件。 运动工具包括可操作地连接到运送工具或运动工具的心轴，可操作地连接到运动工具或输送器的壳体（壳体具有滑动地容纳心轴并包括第一和第二弹簧部分的开口）， 第一弹簧可滑动地定位在第一弹簧部分中并且具有第一弹簧刚度，以及可滑动地定位在第二弹簧部分中的具有第二弹簧刚度的第二弹簧。 第二弹簧刚度小于第一弹簧刚度，使得当壳体响应于施加到系统的力滑动地围绕心轴移动时，第一和第二弹簧选择性地接合，以选择性地限制心轴和壳体之间的运动，由此运动工具 被振动。