公开(公告)号：US20160153578A1

公开(公告)日：2016-06-02

申请号：US14704771

申请日：2015-05-05

申请人： NATIONAL OILWELL VARCO, L.P.

发明人： James Ray Landrith, II ,  Frank B. Springett ,  Eric Trevor Ensley ,  Jonathan Lewis Buelow ,  James W. Weir ,  Travis James Miller

IPC分类号： F16K31/124 ,  F16K27/04 ,  E21B34/02 ,  F16K11/065

CPC分类号： F16K31/0696 ,  F16K3/246 ,  F16K11/044 ,  F16K31/1221 ,  F16K47/023 ,  Y10T137/86582

摘要： The disclosure provides devices and methods for controlling the actuation rates of SPM valves by bi-directionally controlling the fluid which actuates the valve or by maintaining enclosed volumes which communicate with each other thru predetermined restrictions as the valve actuates. These enclosed volumes can be completely isolated, depth compensated, share fluid with the pilot actuating fluid, or utilize the main system fluid. The restrictions can be modified to increase or decrease the actuation rates of the SPM valve. The disclosure also provides control over the main system fluid passage opening and closing positions as well as how rapidly the flow passage areas increase or decrease while opening or closing the valve.

摘要翻译： 本公开提供了用于通过双向控制致动阀的流体或通过维持通过阀门致动时通过预定限制而相互连通的密封容积来控制SPM阀的致动速率的装置和方法。 这些封闭的容积可以完全隔离，深度补偿，与先导驱动流体共用流体，或利用主系统流体。 可以修改限制以增加或减少SPM阀的致动速率。 本公开还提供对主系统流体通道打开和关闭位置的控制，以及在打开或关闭阀门时流道面积增加或减少的速度。

公开(公告)号：US20140311735A1

公开(公告)日：2014-10-23

申请号：US14318319

申请日：2014-06-27

申请人： National Oilwell Varco, L.P.

发明人： James Ray Landrith, II ,  Roger Dale Brown ,  Jonathan Lewis Buelow ,  Joseph James Liotta ,  Eric Trevor Ensley ,  Christopher Dale Johnson

IPC分类号： E21B44/00

CPC分类号： E21B34/16 ,  E21B33/064

摘要： The present disclosure relates to a monitor for a blowout preventer of a wellbore. The blowout preventer includes a housing, rams, and an actuator comprising a cylinder with a piston. The piston is operatively connectable with the ram and movable therewith. The monitor includes a monitor base operatively connectable to the cylinder (the monitor base having an interior side inside the cylinder and an exterior side outside the cylinder), an interior plate positionable inside the cylinder about the interior side of the base (the interior plate operatively connectable to the piston and movable therewith), an exterior plate positionable outside the cylinder about the exterior surface of the monitor base (the exterior plate coupled by magnets to the interior plate and rotatable therewith), and a trigger sensor operatively connectable about the monitor base and the exterior plate to detect rotation thereof whereby a position of the ram may be determined.

摘要翻译： 本公开涉及一种用于井筒防喷器的监视器。 防喷器包括壳体，柱塞和包括具有活塞的气缸的致动器。 活塞可操作地与冲头连接并且可随之移动。 显示器包括可操作地连接到气缸的监视器基座（监视器底座具有气缸内的内侧和气缸外侧的外侧），内部板可围绕底座内部（内部板可操作地定位） 可连接到活塞并可与其一起移动的外部板），外部板可围绕监视器基座的外表面（外部板通过磁体连接到内部板并且可旋转）定位在圆柱体的外部，以及可围绕监视器基座可操作地连接的触发传感器 和外板，以检测其旋转，从而可以确定压头的位置。