Hybrid offshore structure
    1.
    发明授权
    Hybrid offshore structure 失效
    混合海上结构

    公开(公告)号:US4610569A

    公开(公告)日:1986-09-09

    申请号:US635942

    申请日:1984-07-30

    IPC分类号: E02B17/02 E02B17/00 E02D5/00

    摘要: A hybrid offshore structure for conducting petroleum drilling and producing operations in very deep waters is disclosed. The structure consists primarily of a substantially rigid lower section extending upwardly from the bottom of the body of water to a pivot point located intermediate the bottom and the surface of the body of water, a compliant upper section extending upwardly from the pivot point to a deck located above the water surface, pivot means located proximate the pivot point and adapted to permit the compliant upper section to pivot laterally in response to environmental loads, and torsion means adapted to transmit torsional loads from the compliant upper section to the substantially rigid lower section. The lower section may comprise either a conventional trussed steel frame fixed to the bottom of the body of water by a plurality of piles or a concrete or steel gravity base. The compliant upper section may optionally be either a guyed tower or a buoyant tower. A variety of suitable pivot means and torsion means may be used. The pivot point is positioned so that the weight of the hybrid structure is substantially minimized while maintaining the flexural vibration period of the structure within acceptable limits. Generally, the pivot point will be located above the bottom of the body of water a distance of between about 10 percent and about 50 percent of the total depth of the body of water.

    摘要翻译: 公开了一种在非常深的水域进行石油钻探和生产作业的混合海上结构。 该结构主要包括从水体的底部向上延伸到位于水体的底部和表面之间的枢轴点处的基本上刚性的下部分,从枢轴点向上延伸到甲板的柔顺上部 位于水表面上方的枢转装置位于枢转点附近并且适于允许柔顺上部部分响应于环境负载而横向枢转,并且扭转装置适于将扭转载荷从柔性上部部分传递到基本刚性的下部。 下部可以包括通过多个桩或混凝土或钢重力底座固定到水体底部的常规桁架钢框架。 柔性上部可以可选地是带有塔的塔架或浮力塔。 可以使用各种合适的枢转装置和扭转装置。 枢轴点被定位成使得混合结构的重量基本上最小化,同时将结构的弯曲振动周期保持在可接受的限度内。 通常,枢轴点将位于水体底部的上方距离水体总深度的约10%至约50%之间的距离。

    Compliant offshore platform
    2.
    发明授权
    Compliant offshore platform 失效
    符合海上平台

    公开(公告)号:US4696603A

    公开(公告)日:1987-09-29

    申请号:US806055

    申请日:1985-12-05

    IPC分类号: E02B17/00 E02B17/02

    CPC分类号: E02B17/0017

    摘要: A complaint offshore platform in which the primary restoring force to lateral displacement is established by flex piles driven into the seafloor and fixedly secured to the platform legs a preselected distance above the seafloor. The platform includes a substantially rigid space-frame structure extending from the ocean bottom to a position above the ocean surface. A drilling and production deck is secured atop the space-frame structure. Shear piles extend through the base of the space-frame structure to prevent lateral displacement of the base while permitting the space-frame structure to pivot about its base. As the platform sways about its base in response to environmental forces, the flex piles establish a vertical couple at the location at which they are attached to the space frame structure. This couple resists movement of the platform away from a vertical orientation. In the preferred embodiment, the flex piles are secured to the platform at or near one-half the total height of the space-frame structure.

    摘要翻译: 一个投诉海上平台,其中侧向位移的主要恢复力是通过驱动到海底的柔性桩建立的,并且固定地固定在平台上在海底以上的预选距离。 平台包括从海洋底部延伸到海洋表面上方的基本刚性的空间框架结构。 钻井和生产甲板固定在空间框架结构的顶部。 剪切桩延伸穿过空间框架结构的基部,以防止基座的横向位移,同时允许空间框架结构围绕其基部枢转。 随着平台响应于环境力而摇摆其基座,柔性桩在它们附接到空间框架结构的位置处建立垂直耦合。 这对夫妇抵抗平台远离垂直方向的移动。 在优选实施例中,柔性桩在空间框架结构的总高度的一半处或近似固定到平台。

    Gimbaled table riser support system

    公开(公告)号:US06431284B1

    公开(公告)日:2002-08-13

    申请号:US09677814

    申请日:2000-10-03

    IPC分类号: E21B43017

    摘要: For a spar type floating platform having risers passing vertically through the center well of a spar hull, there is provided apparatus for supporting the risers from a gimbaled table supported above the top of the spar hull. The table flexibly is supported by a plurality of non-linear springs attached to the top of the spar hull. The non-linear springs compliantly constrain the table rotationally so that the table is allowed a limited degree of rotational movement with respect to the spar hull in response to wind and current induced environmental loads. Larger capacity non-linear springs are located near the center of the table for supporting the majority of the riser tension, and smaller capacity non-linear springs are located near the perimeter of the table for controlling the rotational stiffness of the table. The riser support table comprises a grid of interconnected beams having openings therebetween through which the risers pass. The non-linear springs may take the form of elastomeric load pads or hydraulic cylinders, or a combination of both. The upper ends of the risers are supported from the table by riser tensioning hydraulic cylinders that may be individually actuated to adjust the tension in and length of the risers. Elastomeric flex units or ball-in-socket devices are disposed between the riser tensioning hydraulic cylinders and the table to permit rotational movement between the each riser and the table.

    Flex joint
    4.
    发明授权
    Flex joint 失效
    挠性接头

    公开(公告)号:US4717288A

    公开(公告)日:1988-01-05

    申请号:US895538

    申请日:1986-08-13

    摘要: A flexible structural joint of "flex joint" for use in an articulated structure is disclosed. The articulated structure has a first section and a second section which are located along a longitudinal axis of the structure, the first section being subject to lateral or transverse loads. The flex joint is located between the first and second sections and accommodates lateral pivoting of the first section with respect to the second section through elastic flexing or bending of certain of its members. No moving parts are used. In a first embodiment, the flex joint consists of an elongated axial load member and at least three shear and torsion links oriented so as to lie substantially in a plane perpendicular to the longitudinal axis of the structure. Each of the links is connected at one of its ends to the first section and at its other end to the second section. In a second embodiment of the invention, four shear and torsion links are joined to form a shear and torsion frame which lies in a plane that is substantially perpendicular to the longitudinal axis of the structure. The frame is connected to the first section of the structure at the opposite ends of a first diametral line lying in the plane of the frame. Similarly, the frame is connected to the second section of the structure at the opposite ends of a second diametral line lying in the plane of the frame. Preferably, the first and second diametral lines are substantially mutually perpendicular.

    摘要翻译: 公开了一种用于铰接结构的“挠性接头”的柔性结构接头。 铰接结构具有沿着结构的纵向轴线定位的第一部分和第二部分,第一部分承受横向或横向载荷。 柔性接头位于第一和第二部分之间,并且通过其某些部件的弹性弯曲或弯曲来容纳第一部分相对于第二部分的横向枢转。 没有使用移动部件。 在第一实施例中,柔性接头包括细长的轴向载荷构件和至少三个剪切和扭转链节,其定向成基本上位于垂直于结构的纵向轴线的平面中。 每个链节在其一端连接到第一部分,而在另一端连接到第二部分。 在本发明的第二实施例中,四个剪切和扭转联接件被连接以形成位于基本上垂直于结构的纵向轴线的平面中的剪切和扭转框架。 框架在位于框架平面中的第一直径线的相对端处连接到结构的第一部分。 类似地,框架在位于框架的平面中的第二直径线的相对端处连接到结构的第二部分。 优选地,第一和第二直径线基本上相互垂直。

    Gimbaled table riser support system

    公开(公告)号:US06648074B2

    公开(公告)日:2003-11-18

    申请号:US09968076

    申请日:2001-10-01

    IPC分类号: E21B43017

    摘要: For a spar type floating platform having risers passing vertically through the center well of a spar hull, there is provided apparatus for supporting the risers from a gimbaled table supported above the top of the spar hull. The table flexibly is supported by a plurality of non-linear springs attached to the top of the spar hull. The non-linear springs compliantly constrain the table rotationally so that the table is allowed a limited degree of rotational movement with respect to the spar hull in response to wind and current induced environmental loads. Larger capacity non-linear springs are located near the center of the table for supporting the majority of the riser tension, and smaller capacity non-linear springs are located near the perimeter of the table for controlling the rotational stiffness of the table. The riser support table comprises a grid of interconnected beams having openings therebetween through which the risers pass. The non-linear springs may take the form of elastomeric load pads or hydraulic cylinders, or a combination of both. The upper ends of the risers are supported from the table by riser tensioning hydraulic cylinders that may be individually actuated to adjust the tension in and length of the risers. Elastomeric flex units or ball-in-socket devices are disposed between the riser tensioning hydraulic cylinders and the table to permit rotational movement between the each riser and the table.

    Compliant offshore structure with fixed base
    6.
    发明授权
    Compliant offshore structure with fixed base 失效
    具有固定基地的合并海上结构

    公开(公告)号:US4810135A

    公开(公告)日:1989-03-07

    申请号:US58020

    申请日:1987-06-04

    IPC分类号: B63B35/44 E02B17/00

    摘要: A compliant offshore structure in which the primary restoring force to lateral displacement is provided by elongate flex elements. A gravity base is rigidly secured to the ocean bottom. A tower extends vertically upward from the base to a position above the ocean surface. A work deck is supported atop the tower. The tower is secured to the base by elongate flex elements which are arranged in an array surrounding the central axis of the structure. Each flex element has one end secured to the base and a second end secured to the tower. The flex elements permit the tower to pivot about its lower end, thus providing the tower and deck with a compliant response to environmental forces. The flex elements also support the tower above and free from contact with the base. This eliminates the need for a vertical load bearing joint between the tower and base.

    摘要翻译: 一种兼容的海上结构,其中通过细长的挠曲元件提供横向位移的初级恢复力。 重力基座牢固地固定在海底。 塔从基座垂直向上延伸到海面以上的位置。 一个工作台被支撑在塔顶。 塔被细长的柔性元件固定到基座上,细长的弹性元件围绕结构的中心轴排列成阵列。 每个柔性元件的一端固定到基座,第二端固定在塔上。 柔性元件允许塔在其下端枢转,从而为塔和甲板提供对环境力的顺应响应。 柔性元件还支撑上面的塔并且不与基座接触。 这不需要在塔架和底座之间的垂直承载接头。

    J-tube method and apparatus
    7.
    发明授权
    J-tube method and apparatus 失效
    J管方法和装置

    公开(公告)号:US4523877A

    公开(公告)日:1985-06-18

    申请号:US391600

    申请日:1982-03-05

    IPC分类号: F16L1/15 F16L1/19 F16L1/04

    CPC分类号: F16L1/19

    摘要: A method and apparatus for installing a pipeline riser (90) through a J-tube (40) at a spud can-founded, compliant, offshore platform (20) are disclosed. The J-tube is mounted on the platform above the maximum expected mudline (28). An upper longitudinal section (44) of the J-tube passes through guide rings (46) on the platform while a lower longitudinal section (48) is maintained free of the platform. After platform settlement, the J-tube is lowered to an elevation near the actual mudline (30). During riser installation through the J-tube, a lower end (54) of the J-tube is restrained from lateral movement by a latch (70) attached to the platform. Before production operations, the lower end is released from the latch so that flexibility of the J-tube accommodates movement of the platform.

    摘要翻译: PCT No.PCT / US80 / 01066 Sec。 371日期:1982年3月5日 102(e)1982年3月5日PCT PCT 1980年8月21日PCT公布。 公开号WO82 / 00697 日期:1982年3月4日公开了一种用于通过J型管(40)安装管道立管(90)的方法和装置。 J型管安装在最大预期泥线上方的平台上(28)。 J管的上纵向部分(44)穿过平台上的引导环(46),而下纵向部分(48)保持没有平台。 平台沉降后,J管下降到实际泥线附近的高度(30)。 在通过J管的提升管安装期间,通过附接到平台的闩锁(70)来限制J型管的下端(54)的横向运动。 在生产操作之前,下端从闩锁释放,使得J型管的灵活性适应平台的移动。

    OFFSHORE TOP TENSIONED RISER BUOYANCY CAN SYSTEM AND METHODS OF FIELD DEVELOPMENT
    8.
    发明申请
    OFFSHORE TOP TENSIONED RISER BUOYANCY CAN SYSTEM AND METHODS OF FIELD DEVELOPMENT 审中-公开
    海洋上升式升降机系统及现场开发方法

    公开(公告)号:US20120255736A1

    公开(公告)日:2012-10-11

    申请号:US13440747

    申请日:2012-04-05

    IPC分类号: E21B15/02 E21B7/12

    CPC分类号: E21B19/004 E21B17/012

    摘要: A method for developing an offshore field comprises (a) coupling a plurality of top-tensioned risers to a first vessel at a first location. In addition, the method comprises (b) decoupling the first vessel from the plurality of top-tensioned risers after (a). Further, the method comprises (c) coupling a second vessel to the plurality of top-tensioned risers after (b) at the first location.

    摘要翻译: 一种用于开发近海场的方法包括(a)在第一位置将多个顶部张紧的立管联接到第一船。 另外,该方法包括(b)在(a)之后将第一容器与多个顶部张紧的提升管分离。 此外,该方法包括(c)在(b)在第一位置之后将第二容器耦合到多个顶部张紧的提升管。

    Riser buoyancy system
    9.
    发明授权
    Riser buoyancy system 有权
    立管浮力系统

    公开(公告)号:US06896062B2

    公开(公告)日:2005-05-24

    申请号:US10267926

    申请日:2002-10-09

    CPC分类号: E21B17/012

    摘要: A frame and system for adding buoyancy to a riser used in connection with floating platforms is provided which, in some example embodiments, includes a stem attached to multiple supports which include flanges arranged to take impact and abrasion loads off an internal buoyancy module. An air management system is also provided.

    摘要翻译: 提供了用于将浮力增加到与浮动平台相关联的提升管的框架和系统,其在一些示例性实施例中包括附接到多个支撑件的杆,其包括被布置成从内部浮力模块取下冲击和磨损负载的凸缘。 还提供空中管理系统。

    Telescoping truss platform
    10.
    发明授权
    Telescoping truss platform 有权
    伸缩桁架平台

    公开(公告)号:US06637979B2

    公开(公告)日:2003-10-28

    申请号:US09946951

    申请日:2001-09-04

    IPC分类号: E02D1502

    摘要: A semisubmersible floating platform for use in marine environments. The platform comprises a truss telescopingly mounted to the platform and movable between upper and lower positions with respect to the platform. At least one riser buoyancy member is telescopingly mounted to the platform and movable between upper and lower positions with respect to the platform. For each riser buoyancy member, at least one guide is attached to the truss and adjacent the buoyancy member for guiding and laterally restraining the buoyancy member.

    摘要翻译: 用于海洋环境的半潜浮池。 平台包括可伸缩地安装在平台上并相对于平台在上下位置之间移动的桁架。 至少一个提升管浮力构件可伸缩地安装到平台并且可相对于平台在上下位置之间移动。 对于每个提升管浮力构件,至少一个引导件附接到桁架并且邻近浮力构件以引导和横向地限制浮力构件。