公开(公告)号：US09428994B2

公开(公告)日：2016-08-30

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： E21B34/16 ,  E21B33/064

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） 可连接到活塞并可随之移动的外部板），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）定位在圆筒外部，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。

公开(公告)号：US20150159459A1

公开(公告)日：2015-06-11

申请号：US14614211

申请日：2015-02-04

申请人： National Oilwell Varco, L.P.

发明人： Joseph James Liotta ,  Eric Trevor Ensley ,  Christopher Dale Johnson

IPC分类号： E21B33/06

CPC分类号： E21B33/062 ,  E21B33/06 ,  E21B34/16 ,  Y10T137/0318 ,  Y10T137/8175 ,  Y10T137/8225 ,  Y10T137/8242 ,  Y10T137/8292

摘要： A blowout preventer for sealing a tubular of a wellbore is provided. The blowout preventer has a housing having a bore therethrough for receiving the tubular, at least one ram slidably positionable in the housing (each of the rams having a ram block for sealing engagement about the tubular), an actuator for selectively driving the ram block (the actuator comprising a piston slidably positionable in a cylinder), and a monitor for detecting the piston therein. The monitor has a visual indicator on an exterior of the cylinder. The visual indicator is operatively coupled to the piston for displaying a position of the piston as the piston travels within the cylinder whereby a position of the ram may be determined.

摘要翻译： 提供一种用于密封井眼管的防喷器。 防喷器具有壳体，其具有穿过其中的孔，用于容纳可滑动地定位在壳体中的管状的至少一个柱塞（每个柱塞具有用于密封围绕管状物接合的压头块），用于选择性地驱动压头块的致动器 致动器包括可滑动地定位在气缸中的活塞）和用于检测活塞的监视器。 显示器在气缸外部有一个视觉指示器。 视觉指示器可操作地联接到活塞，用于当活塞在气缸内行进时显示活塞的位置，从而确定压头的位置。

公开(公告)号：US20150275609A1

公开(公告)日：2015-10-01

申请号：US14229268

申请日：2014-03-28

申请人： National Oilwell Varco, L.P.

发明人： Joseph James Liotta ,  Eric Trevor Ensley ,  Christopher Dale Johnson

IPC分类号： E21B33/06 ,  E21B33/04

CPC分类号： E21B33/06 ,  E21B33/0422 ,  E21B33/064

摘要： A blowout preventer and seal assembly for sealing a wellbore penetrating a subsurface formation is provided. The blowout preventer includes a housing having a flow path therethrough in fluid communication with the wellbore and a sealing assembly positionable in the housing about the flow path. The sealing assembly includes a piston slidably positionable in the housing and a packer element. The packer element includes a plurality of fingers and a packer seal. The fingers include a housing portion and a piston portion. The housing portion is slidably movable along the housing and the piston portion is slidingly movable along the piston. The fingers are engageable by the piston and movable to a sealed position about the flow path whereby the packer seal is energized to form a seal about the blowout preventer.

摘要翻译： 提供了用于密封穿透地下地层的井眼的防喷器和密封组件。 防喷器包括具有与井眼流体连通的流动通道的壳体和可围绕流动路径定位在壳体中的密封组件。 密封组件包括可滑动地定位在壳体中的活塞和封隔器元件。 封隔器元件包括多个指状物和封隔器密封件。 手指包括壳体部分和活塞部分。 壳体部分沿着壳体可滑动地移动，并且活塞部分可沿活塞滑动移动。 指状物可通过活塞接合并且可移动到围绕流动路径的密封位置，由此封隔器密封件通电以在防喷器周围形成密封。

公开(公告)号：US09708877B2

公开(公告)日：2017-07-18

申请号：US14614211

申请日：2015-02-04

申请人： National Oilwell Varco, L.P.

发明人： Joseph James Liotta ,  Eric Trevor Ensley ,  Christopher Dale Johnson

IPC分类号： E21B33/06 ,  E21B34/16

CPC分类号： E21B33/062 ,  E21B33/06 ,  E21B34/16 ,  Y10T137/0318 ,  Y10T137/8175 ,  Y10T137/8225 ,  Y10T137/8242 ,  Y10T137/8292

摘要： A blowout preventer for sealing a tubular of a wellbore is provided. The blowout preventer has a housing having a bore therethrough for receiving the tubular, at least one ram slidably positionable in the housing (each of the rams having a ram block for sealing engagement about the tubular), an actuator for selectively driving the ram block (the actuator comprising a piston slidably positionable in a cylinder), and a monitor for detecting the piston therein. The monitor has a visual indicator on an exterior of the cylinder. The visual indicator is operatively coupled to the piston for displaying a position of the piston as the piston travels within the cylinder whereby a position of the ram may be determined.

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。

公开(公告)号：US20190234176A1

公开(公告)日：2019-08-01

申请号：US16257231

申请日：2019-01-25

申请人： National Oilwell Varco, L.P.

发明人： Christopher Dale Johnson ,  Ajay V. Kulkarni ,  Ali A. Al-Quraishi

IPC分类号： E21B33/124 ,  E21B19/16 ,  E21B33/127 ,  E21B33/122

CPC分类号： E21B33/1243 ,  E21B19/16 ,  E21B33/06 ,  E21B33/085 ,  E21B33/122 ,  E21B33/127 ,  E21B2033/005

摘要： A pressure control device for sealing about a tubular string comprises: a flange disposed about a central axis, an annular extension extending from the flange and an annular seal element coupled to the annular extension. The seal member includes a through-passage for receiving the tubular string and an annular recess in which the annular extension is disposed. The annular extension includes a radially-inward facing surface that includes a tapered region that is nonlinear in an axial cross-section for reducing mechanical stresses in the seal member.

公开(公告)号：US09580987B2

公开(公告)日：2017-02-28

申请号：US14229268

申请日：2014-03-28

申请人： National Oilwell Varco, L.P.

发明人： Joseph James Liotta ,  Eric Trevor Ensley ,  Christopher Dale Johnson

IPC分类号： E21B33/06 ,  E21B33/04 ,  E21B33/064

CPC分类号： E21B33/06 ,  E21B33/0422 ,  E21B33/064

摘要： A blowout preventer includes a housing having a flow path therethrough in fluid communication with a wellbore penetrating a subsurface formation and a sealing assembly positionable in the housing about the flow path. The sealing assembly includes a piston slidably positionable in the housing and a packer element. The packer element includes a plurality of fingers and a packer seal. The fingers include a housing portion and a piston portion. The housing portion is slidably movable along the housing and the piston portion is slidingly movable along the piston. The fingers are engageable by the piston and movable to a sealed position about the flow path, and the packer seal is energized to form a seal about the blowout preventer to seal the wellbore in the subsurface formation.

摘要翻译： 防喷器包括壳体，该壳体具有与穿过地下地层的井筒流体连通的流动通道，以及可围绕流动路径定位在壳体中的密封组件。 密封组件包括可滑动地定位在壳体中的活塞和封隔器元件。 封隔器元件包括多个指状物和封隔器密封件。 手指包括壳体部分和活塞部分。 壳体部分沿着壳体可滑动地移动，并且活塞部分可沿活塞滑动移动。 手指可以通过活塞接合并且可以围绕流动路径移动到密封位置，并且封隔器密封件被通电以在防喷器周围形成密封，以密封地下地层中的井眼。