公开(公告)号：US4766956A

公开(公告)日：1988-08-30

申请号：US47171

申请日：1987-05-07

申请人： Jerry D. Smith ,  Edward J. Szymczak

发明人： Jerry D. Smith ,  Edward J. Szymczak

IPC分类号： E21B33/03 ,  E21B33/00 ,  E21B33/04

CPC分类号： E21B33/04 ,  E21B2033/005

摘要： An improved annular seal and hanger which are to be installed in a wellhead housing. The annular seal assembly includes seal ring having a central body with upper outer rim, upper inner rim, lower outer rim and lower inner rim extending from said central body, an upper wedge ring, a lower wedge ring and means connecting said rings to allow setting movement thereof, means releasably securing said assembled rings to the hanger for running into the wellhead housing, each of said rims including an outer sealing lip, the outer sealing lips having a free diameter less than the diameter of the lower wedge ring so that the sealing lips are protected during running of the hanger into the wellhead housing and means for moving said wedge rings into the space between the rims of said seal ring for urging the sealing lips into sealing engagement with the interior sealing surface of said housing.

公开(公告)号：US4759409A

公开(公告)日：1988-07-26

申请号：US44411

申请日：1987-04-30

申请人： Steven D. Gullion

发明人： Steven D. Gullion

IPC分类号： E21B33/035 ,  E21B33/00 ,  E21B33/043

CPC分类号： E21B33/043 ,  E21B2033/005

摘要： An improved subsea wellhead seal assembly include an annular body having a pair of lower annular skirts, one extending downwardly and outwardly and the other extending downwardly and inwardly, a lower landing ring and means movably securing the lower landing ring to the annular body so that, when the lower landing ring is landed, the annular body continues its downward movement to deform the annular skirts outwardly and inwardly into sealing engagement with the walls of the annulus. A reaction ring is provided above landing ring for engagement by the ends of skirts and spacer rings may be used to preselect the level of the sealing surface engagement by the skirts.

公开(公告)号：US4751965A

公开(公告)日：1988-06-21

申请号：US44413

申请日：1987-04-30

申请人： Thomas G. Cassity

发明人： Thomas G. Cassity

IPC分类号： E21D9/14 ,  E21B33/00 ,  E21B33/04 ,  E21B33/043

CPC分类号： E21B33/04 ,  E21B2033/005

摘要： The improved wellhead seal assembly includes an annular metal seal ring having upper spaced apart inner and outer rims with an upper energizing ring positioned between such rims and movable axially between them, a resilient seal embedded in and extending through ports in the central portion of the seal ring, lower inner and outer seal rings connected to said central portion of said seal ring by inner and outer bellows and a wedging ring depending from the central portion of the seal ring between such bellows and adapted to move downward between the inner and outer seal rings to wedge them apart into sealing engagement with the inner and outer sealing surfaces, such movement being responsive to downward movement of the upper energizing ring and the flexing of the lower bellows legs and continued movement of said upper energizing ring wedging said upper rims apart into sealing engagement with the inner and outer sealing surfaces, the upper energizing ring being releasably connected to the upper seal rims so that said upper seal is not set until the lower seal is completely energized and set.

公开(公告)号：US4749047A

公开(公告)日：1988-06-07

申请号：US44581

申请日：1987-04-30

申请人： William M. Taylor

发明人： William M. Taylor

IPC分类号： E21B33/035 ,  E21B33/00 ,  E21B33/04 ,  F16J15/08 ,  E21B33/03

CPC分类号： E21B33/04 ,  F16J15/0881 ,  E21B2033/005

摘要： An improved wellhead structure including a wellhead housing having a sealing surface with grooves therein and pressure compensating material in the grooves, a sealing sleeve having inner and outer resilient seal rings and an internal actuating groove with upper and lower shoulders, an actuating ring having an outer flange engaged within the internal groove in the sleeve and an external surface tapering downward and inwardly and a hanger with an upstanding rim having external grooves with pressure compensating material in the grooves and having an inner surface which tapers upwardly and outwardly and is engaged by the external tapered surface of the actuating ring and upper and lower external seals and a port extending from the interior of the actuating ring to its exterior into the area between such seals so that pressure applied through the port forges the hanger rim and the sealing sleeve outward to ensure positive metal-to-metal sealing across the annulus between the exterior of the hanger rim and the interior of the wellhead housing.

公开(公告)号：US4742874A

公开(公告)日：1988-05-10

申请号：US44582

申请日：1987-04-30

申请人： Steven D. Gullion

发明人： Steven D. Gullion

IPC分类号： E21B33/00 ,  E21B33/043 ,  E21B33/035

CPC分类号： E21B33/043 ,  E21B2033/005

摘要： An improved annular seal between tubular members in a subsea wellhead having an annular seal member with a U shape in section with the opening facing upwardly and two interengaged annular wedges for energizing the sealing surfaces of the inner and outer portions of the seal member at different levels. The interengagement of the wedges includes sufficient play to provide proper energizing of both inner and outer sealing surfaces at the same time. Further, the inner sealing surface is positioned at a much higher level than the outer sealing surface and close to the upper end of the inner member in which it is to seal to minimize the setting force for the inner sleeve and to minimize the amount of drag the seal will incur when retrieved. Also, the location of the outer sealing surface close to the inner member shoulder minimizes the reaction path of the lockdown sleeve. A ring engages with the upper interior of the outer leg of the seal and has a lower surface which is tapered downwardly and inwardly and is engaged by a mating taper on the upper surface of the outer wedge member to ensure release of the seal from set position.

摘要翻译： 在海底井口中的管状构件之间的改进的环形密封件，其具有环形密封构件，U形截面具有面向上的开口，以及两个相互接合的环形楔，用于以不同的水平激励密封构件的内部和外部的密封表面 。 楔子的相互接合包括充分发挥同时提供内密封表面和外密封表面的适当赋能。 此外，内部密封表面位于比外部密封表面高得多的水平面上，并且靠近其内部构件的上端被密封，以最小化内部套筒的固定力并且使拖曳量最小化 检索时密封件会发生。 此外，外部密封表面靠近内部构件肩部的位置使得锁定套筒的反作用路径最小化。 环与密封件的外腿的上部内部接合并且具有向下和向内锥形的下表面，并且在外楔形构件的上表面上通过配合锥形接合以确保将密封件从设定位置释放 。

公开(公告)号：US4945792A

公开(公告)日：1990-08-07

申请号：US146404

申请日：1988-01-21

申请人： Richard E. Gardner

发明人： Richard E. Gardner

IPC分类号： B23B29/02 ,  B23B51/10

CPC分类号： B23B29/02 ,  B23B51/102 ,  Y10T82/12 ,  Y10T82/125 ,  Y10T82/128

摘要： An improved boring tool with a hollow boring bar and has an exterior semicircular surface and an opposite eliptical surface over a substantial portion of its length and has a circular slotted end portion, the diameter of which is sufficiently small to pass through the neck opening in the workpiece whose interior is to be machined, a piston having its rod extending through the boring bar and connecting to a linkage which also connects to a tool holder which is pivotally mounted to the enlarged slotted end of the boring bar so that the tool holder may be pivoted to position the tool secured to the tool holder for the boring of the arcuate interior surface immediately inside the neck of the workpiece responsive to axial and radial movement of the boring bar in the opening of the neck.

摘要翻译： 一种具有中空镗杆的改进的钻孔工具，并且在其长度的大部分上具有外部半圆形表面和相对的椭圆形表面，并且具有圆形开槽端部，其直径足够小以通过颈部开口 其内部要加工的工件，活塞，其杆延伸穿过镗杆并连接到连杆，该连杆还连接到工具架，该工具夹可枢转地安装到镗杆的扩大的开口端，使得刀架可以是 枢转以定位固定到工具架上的工具，以便响应于镗杆在颈部开口中的轴向和径向运动，立即在工件的颈部内镗孔。

公开(公告)号：US4911410A

公开(公告)日：1990-03-27

申请号：US384823

申请日：1989-07-21

申请人： Gerald S. Baker

发明人： Gerald S. Baker

IPC分类号： B23D15/04 ,  B23D15/14 ,  E21B29/04 ,  E21B29/08 ,  E21B34/02 ,  F16K3/02 ,  F16K3/314 ,  F16K31/122

CPC分类号： F16K3/314 ,  E21B29/04 ,  E21B29/08 ,  E21B34/02 ,  F16K3/0263 ,  F16K31/1221 ,  Y10T83/9447

摘要： A shearing type of gate valve having a sleeve of hard wear resistant material in the opening through the gate and coacting with insert rings of hard, wear resistant material in the seat rings for shearing a wire line or tubular member extending through the valve and the gate, the sleeve and insert ring being assembled with the gate and the seat rings in a manner to provide sufficient compression preload thereon so that they are not subjected to tension loads which avoids chipping, breaking or other damage to the sleeve and the insert rings. Preferably the sleeve and insert rings are of tungsten carbide.

公开(公告)号：US4880061A

公开(公告)日：1989-11-14

申请号：US108377

申请日：1987-10-14

申请人： Arthur G. Ahlstone

发明人： Arthur G. Ahlstone

IPC分类号： E21B33/047 ,  E21B47/18

CPC分类号： E21B33/047 ,  E21B47/18

摘要： A packoff assembly for sealing the annulus between the outside surface of a tubing hanger and the internal bore of a subsea wellhead includes a packoff sleeve insertable in the annulus and a seal assembly on its lower end. A release sleeve is disposed around the upper end of the packoff sleeve and is axially movable with respect thereto. An internal shoulder on the packoff sleeve receives a lock ring on the tubing hanger when the seal assembly is set to lock the packoff assembly to the tubing hanger. Circumferentially spaced apart dogs on the packoff sleeve and radially slidable on the shoulder are forced inwardly by the release sleeve when it is pulled up to retract the lock ring from the shoulder and release the packoff assembly from the tubing hanger. A running tool for running the tubing hanger and packoff assembly into the well and setting the packoff includes telescoping upper and lower body members. A surrounding sleeve is disposed around the lower body member and includes a piston surface for actuating the surrounding sleeve downwardly to set the seal assembly. Releasable latches are carried between the surrounding sleeve and the lower body member for attaching to the packoff assembly and tubing hanger. A hydraulic indicator detects sufficient downward movement of the upper body member to set the seal assembly. Emergency release a shuttle valve connected to a line in the hydraulic system to release the running tool from the tubing hanger in the event of hydraulic system failure.

摘要翻译： 用于密封管道悬挂器的外表面和海底井口的内孔之间的环的包装组件包括可插入环形空间的包装套筒和其下端上的密封组件。 释放套筒围绕包装套筒的上端设置并且可以相对于其轴向移动。 当密封组件设置为将包装组件锁定到管道悬挂器时，包装套管上的内肩部在管衣架上容纳锁环。 折叠套筒上的周向间隔开的销并且在肩部上可径向滑动的肩部上的释放套筒当被拉起以将锁定环从肩部缩回以从套管悬挂装置释放时，被释放套筒向内推动。 用于将管道悬挂架和包装组件运行到井中并设置包装的运行工具包括伸缩的上部和下部主体部件。 周围套筒围绕下主体构件设置并且包括用于向下致动周围套筒以设置密封组件的活塞表面。 可释放的闩锁承载在周围的套筒和下主体构件之间，用于附接到包装组件和管道挂钩。 液压指示器检测到上主体的足够的向下运动以设置密封组件。 在液压系统发生故障的情况下，紧急释放连接到液压系统中的管路的梭阀，以从管道悬挂器释放运行的工具。

公开(公告)号：US4875523A

公开(公告)日：1989-10-24

申请号：US256454

申请日：1988-10-12

申请人： Edward T. Thornburrow

发明人： Edward T. Thornburrow

IPC分类号： E21B4/02 ,  E21B29/00 ,  E21B33/068 ,  F16L55/10

CPC分类号： E21B29/00 ,  E21B33/068 ,  E21B4/02 ,  F16L55/10 ,  Y10T137/6109

摘要： The invention relates to a compact valve removal tool with a fixed crosshead (18) to be mounted on a pipeline end, such as a wellhead spool outlet (3), and a moving crosshead (19) which is axially slidable, the fixed crosshead accommodating an axially slidable and rotatable rod (16) and gripping means (50) for holding the rod, and the moving crosshead having drive means (23, 24) for advancing and retracting it to enable rod extension pieces (17) to be fitted or removed, the fixed crosshead also having safety stops (58) movable into the line behind the rod or behind a rod extension to block the path of the rod if the griping means failed. Preferably, the moving crosshead (10) cooperates with further safety means (60-72) to prevent operation of the gripping means except in predetermined, safe positions. The tool could be useful for operations other than plug insertion, such as milling a valve gate.

公开(公告)号：US4871143A

公开(公告)日：1989-10-03

申请号：US310696

申请日：1989-02-15

申请人： Gerald S. Baker

发明人： Gerald S. Baker

IPC分类号： F16K3/02 ,  F16K31/122

CPC分类号： F16K31/1221 ,  F16K3/0254 ,  Y10T74/18288 ,  Y10T74/18304 ,  Y10T74/18992

摘要： An improved gate valve having a body with a chamber and an inlet and an outlet extending therethrough into said chamber, a gate mounted for reciprocation in said chamber between open and closed positions, a pressure responsive actuator having a housing, a piston, a connection to the gate and an actuating stem extending from the housing, a supplemental actuator having a connection to the actuator housing, an operating stem connected to the actuating stem, the operating stem having a shoulder facing in the direction opposite to the direction of closing movement of the gate, roller levers pivotally mounted to be in engagement with the exterior of the operating stem and a spring urging the roller levers into tight engagement with the operating stem, the roller levers pivoting on engagement with the stem shoulder to exert a closing force on the stem.

摘要翻译： 一种改进的闸阀，具有主体，该主体具有一个腔室，并且一个入口和一个出口延伸穿过该腔室，一个门被安装用于在打开和关闭位置之间在所述腔室中往复运动，压力响应致动器具有一个壳体，一个活塞， 所述门和从所述壳体延伸的致动杆，具有与所述致动器壳体的连接的辅助致动器，连接到所述致动杆的操作杆，所述操作杆具有面向与所述致动杆的关闭运动的方向相反的方向的肩部 门，滚轮杆，其枢转地安装成与操作杆的外部接合，以及弹簧，该弹簧推动辊杆与操作杆紧密接合，所述滚轮杆与杆肩接合枢转，以在杆上施加关闭力 。