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1. 发明授权

US5992526A ROV deployed tree cap for a subsea tree and method of installation 有权
标题翻译： ROV部署了海底树的树帽和安装方法
公开(公告)号：US5992526A
公开(公告)日：1999-11-30
申请号：US203953
申请日：1998-12-02
申请人： Christopher E. Cunningham , Vincent H. Vetter , Shiva P. Singeetham , Edmund M. Mouret , Christopher D. Bartlett
发明人： Christopher E. Cunningham , Vincent H. Vetter , Shiva P. Singeetham , Edmund M. Mouret , Christopher D. Bartlett
IPC分类号： E21B33/035 , E21B33/037 , E21B33/038 , E21B43/01
CPC分类号： E21B33/037 , E21B33/035 , E21B33/0355 , E21B33/038
摘要： A lightweight ROV deployable tree cap (28) for deployment on a subsea production hub (10) of a subsea tree. A tree cap (28) has a lightweight body (30) with parallel planar sides and including suitable openings and slots for mounting of the various operating elements. A seal plate structure (64) includes a piston (66) connected to a seal plate (68) having a pair of downwardly projecting tubular seal members (70, 72) for fitting within the production bore (13) and annulus bore (15) of the tree hub (10) in a sealed landed position. Fluid pressure is applied to fluid line (96) to urge piston (66) and seal plate (68) downwardly into sealing landed position. For removal or retrieval of tree cap (28) from the installed position on subsea tree hub (10), fluid pressure is applied through fluid lines (108, 110) for the upward movement of seal plate (68) and tubular seal members (70, 72) from sealing relation with production bore (13) and annulus bore (15). Hydraulic fluid is supplied from the ROV through fluid coupling devices (98, 112) which are insertable within receptacles (110,114) in the tree cap body (30). The fluid couplers (98, 112) are removed from the operating receptacles after installation of the tree cap (28) and are parked in other receptacles on A tree frame until needed for further service, such as removal of the tree cap (28). A spare tree cap may be positioned on the tree frame and installed on the tree hub by the ROV.
摘要翻译：用于部署在海底树的海底生产枢纽（10）上的轻量级ROV部署树帽（28）。树帽（28）具有平坦的平面侧面的轻质本体（30），并且包括用于安装各种操作元件的合适的开口和狭槽。密封板结构（64）包括连接到密封板（68）的活塞（66），所述密封板具有一对向下突出的管状密封构件（70,72），用于装配在生产孔（13）和环空孔（15）内，（10）处于密封着陆位置。将流体压力施加到流体管线（96）以将活塞（66）和密封板（68）向下推动到密封着陆位置。为了从水下树轮毂（10）上的安装位置移除或取回树帽（28），通过流体管线（108,110）施加流体压力，以使密封板（68）和管状密封构件（70）向上运动，72）与生产孔（13）和环形孔（15）的密封关系。液压流体通过可插入树帽体（30）内的容器（110,114）内的流体连接装置（98,112）从ROV供应。液体耦合器（98,112）在安装树帽（28）之后从操作容器移除并且停放在树架上的其他容器中，直到需要进一步的服务，例如移除树帽（28）。备用树帽可以放置在树形框架上，并由ROV安装在树中。

2. 发明授权

US5174376A Metal-to-metal annulus packoff for a subsea wellhead system 失效
标题翻译：金属对金属包裹的一个SUBSEA井系统
公开(公告)号：US5174376A
公开(公告)日：1992-12-29
申请号：US633631
申请日：1990-12-21
申请人： Shiva P. Singeetham
发明人： Shiva P. Singeetham
IPC分类号： E21B33/00 , E21B33/043
CPC分类号： E21B33/043 , E21B2033/005
摘要： An all-metal, well annulus packoff assembly for establishing a high pressure, corrosion resistant metal-to-metal seal between a wellhead housing and a casing hanger, including an annular metallic seal element having a generally upstanding U-shaped cross section that is adapted for non-rotational sequential setting against the hanger and the housing.
摘要翻译：一种用于在井口壳体和套管悬挂器之间建立高压，耐腐蚀的金属对金属密封件的全金属环形填料组件，其包括具有基本上直立的U形横截面的环形金属密封元件，其适于用于针对衣架和壳体的非旋转顺序设置。

3. 发明授权

US06666272B2 Externally actuated subsea wellhead tieback connector 失效
标题翻译：外部致动的海底井口接头连接器
公开(公告)号：US06666272B2
公开(公告)日：2003-12-23
申请号：US10072044
申请日：2002-02-04
申请人： Shiva P. Singeetham , Russell E. McBeth , Robert B. Baten
发明人： Shiva P. Singeetham , Russell E. McBeth , Robert B. Baten
IPC分类号： E21B2912
CPC分类号： E21B33/038
摘要： An externally actuatable tieback connector for establishing fluid communication and force resisting connection of a conduit to a subsea wellhead having an internal locking geometry. The tieback connector has a body structure that is adapted for landing on a wellhead, with a part thereof extending into the wellhead and carrying a split lock ring. A lock energizing element, moveable relative to the body structure, has a locking position expanding the lock ring into locking and pre-load force transmitting engagement with the internal locking geometry of the wellhead and an unlocking position releasing the tieback connector from the wellhead. One or more drive members extend from the lock energizing element and are exposed externally of the connector body and wellhead for engagement and actuating movement by a lock actuating tool such as a ROV or the like.
摘要翻译：一种用于建立流体连通并具有阻力的导管连接到具有内部锁定几何形状的海底井口的外部可致动的连接器。回弯连接器具有适于在井口上着陆的主体结构，其一部分延伸到井口中并且携带分离的锁环。相对于主体结构可移动的锁定激励元件具有锁定位置，该锁定位置将锁定环扩展成与井口的内部锁定几何形状的锁定和预加载力传递接合以及将解除连接器从井口释放的解锁位置。一个或多个驱动构件从锁定激励元件延伸并且暴露在连接器主体和井口的外部，用于通过诸如ROV等的锁定致动工具进行接合和致动运动。

4. 发明授权

US5069288A Single trip casing hanger/packoff running tool 失效
标题翻译：单行套管衣架/包装运行工具
公开(公告)号：US5069288A
公开(公告)日：1991-12-03
申请号：US638876
申请日：1991-01-08
申请人： Shiva P. Singeetham
发明人： Shiva P. Singeetham
IPC分类号： E21B33/043
CPC分类号： E21B33/043
摘要： A well tool assembly for running a casing hanger and a packoff into a wellhead housing during a single trip into the well, comprising a tubular inner mandrel, a locking mandrel, an outer annular body surrounding and rotatably connected to the inner mandrel, an outer sleeve surrounding the outer body, and means to prevent relative rotation between the outer body and the locking mandrel.
摘要翻译：一种用于在单次进入井中期间运行套管悬挂器和包装到井口壳体中的井具组件，包括管状内心轴，锁定心轴，围绕并可旋转地连接到内心轴的外环形体，外套筒围绕外部本体，以及防止外部本体和锁定心轴之间的相对旋转的装置。

5. 发明授权

US4921284A High strength split clamp for pipe flanges 失效
标题翻译：用于管道法兰的高强度分离夹
公开(公告)号：US4921284A
公开(公告)日：1990-05-01
申请号：US344736
申请日：1989-04-28
申请人： Shiva P. Singeetham
发明人： Shiva P. Singeetham
IPC分类号： F16L19/02 , F16L23/036
CPC分类号： F16L23/036 , F16L19/0231
摘要： A splitt clamp assembly for pipe flanges, comprising an outer ring with internal threads for securing it to an externally threaded first pipe flange, and a plurality of arcuate segments interconnected by keys into an inner ring, means to secure the inner ring to a second pipe flange, and means to secure the inner and outer rings together in a relative non-rotable manner.
摘要翻译：一种用于管道法兰的分离夹具组件，包括一个带有内螺纹的外环，用于将其固定到一个外螺纹的第一管法兰上，以及多个弓形段，通过钥匙互锁成一个内环，用于将内环固定到第二管凸缘，以及以相对不可旋转的方式固定内圈和外圈的装置。

6. 发明授权

US5299643A Dual radially locked subsea housing 失效
标题翻译：双径向锁定海底外壳
公开(公告)号：US5299643A
公开(公告)日：1994-04-05
申请号：US968755
申请日：1992-10-30
申请人： Vincent H. Vetter , Shiva P. Singeetham , William A. Valka , Michael R. Williams
发明人： Vincent H. Vetter , Shiva P. Singeetham , William A. Valka , Michael R. Williams
IPC分类号： E21B33/035 , E21B33/043
CPC分类号： E21B33/043 , E21B33/035
摘要： A radially locked subsea housing includes a low pressure housing having upper and lower radial lock regions, each of which regions includes a radial interference surface that is between vertical to only slightly tapered in orientation. A high pressure housing also has upper and lower radial lock regions, each of which regions includes a radial interference surface that is slightly greater in radial diameter than the corresponding interference surface of the low pressure housing. The interference surfaces of the upper and lower radial lock regions form upper and lower interference fits, respectively, between the high pressure and low pressure housings when the housings are assembled subsea. The low pressure housing further includes a landing shoulder defining a landing surface that is substantially more tapered in orientation than are the interference surfaces of the upper and lower radial lock regions, and the high pressure housing includes a landing shoulder defining a landing surface formed to land on the landing surface of the low pressure housing when the housings are assembled subsea. In an alternative embodiment, a zero-clearance, axially extended fit is employed at one or both of the radial lock regions.
摘要翻译：径向锁定的海底壳体包括具有上径向锁定区域和下径向锁定区域的低压壳体，每个区域包括在垂直方向上仅略微渐缩的径向干涉表面。高压壳体还具有上和下径向锁定区域，每个区域包括径向干涉表面，该径向干涉表面的径向直径小于低压壳体的相应干涉面。上壳体和下径向锁定区域的干涉表面在壳体组装海底时分别形成高压和低压壳体之间的上下干涉配合。所述低压外壳还包括着陆台肩，所述着陆台肩限定了与所述上径向锁定区域和所述下径向锁定区域的所述干涉表面相比基本上在取向上更加锥形的着陆表面，并且所述高压壳体包括限定着陆面当壳体组装在海底时，在低压壳体的着陆面上。在替代实施例中，在径向锁定区域中的一个或两个处采用零间隙轴向延伸配合。

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