公开(公告)号：US07422394B2

公开(公告)日：2008-09-09

申请号：US11383350

申请日：2006-05-15

申请人： James R. Koon ,  Pieter G. Wybro ,  Robert M. Kipp

发明人： James R. Koon ,  Pieter G. Wybro ,  Robert M. Kipp

IPC分类号： B63B35/44

CPC分类号： B63B21/502

摘要： A tendon for mooring a tension leg platform having an uppermost pipe segment with a reduced diameter compared to at least one of the lower pipe segments. The tendon is watertight and sealed from the ocean environment, preferably filled with air at one atmosphere of pressure. One or more interior bulkheads may be included to divide the tendon into multiple compartments. The reduced outer diameter of the uppermost pipe segment provides reduced drag due to waves and currents and accommodates smaller tendon support buoys and vortex fairings, while the greater diameter of the lower pipe segment provides for increased tendon buoyancy.

摘要翻译： 用于系泊张力腿平台的腱，其具有与至少一个下管段相比具有减小的直径的最上管段。 肌腱是水密的，并且密封在海洋环境中，最好在一个大气压下充满空气。 可以包括一个或多个内部隔板以将腱分成多个隔室。 最小管段减小的外径由于波浪和电流而减小了阻力，并且容纳较小的腱支撑浮标和涡流整流罩，而较低的管段的较大直径提供了增加的腱浮力。

公开(公告)号：US5775845A

公开(公告)日：1998-07-07

申请号：US784363

申请日：1997-01-17

申请人： Pieter G. Wybro

发明人： Pieter G. Wybro

IPC分类号： B63B21/50 ,  E21B19/00 ,  B43B35/44 ,  E02B17/00

CPC分类号： E21B19/006 ,  B63B21/502

摘要： A passive riser tensioner apparatus for tensioning riser pipes on floating platforms and tension leg platforms utilizes one or more elongate elastic tensioning elements connected at top and bottom ends to the upper end of a riser pipe that are capable of being axially stretched. Each tensioning element has a threaded length adjustment rod and tension preload nut at its top end which adjusts the axial length to produce a predetermined preload tension force in the tensioning element between its connection to the riser pipe. A riser support collar slidably received on the length adjustment rod and riser pipe upper end is configured to be supported on the deck of the platform and allow axial movement of the riser pipe. A tension locking nut on the length adjustment rod releasably engages the length adjustment rod with the riser support collar when it is supported on the deck. The tension preload nut is rotated to stretch the tensioning element to produce the preload tension force prior to supporting the riser support collar on the deck. The tension locking nut is then rotated to engage the length adjustment rod with the riser support collar such that the predetermined preload tension force is transmitted between the bottom end of the tensioning element and the collar when supported on the deck. The riser is supported at its upper end by the deck and maintained in a tensioned condition by the tensioning elements while allowing a limited amount of relative movement between the deck and the riser pipe upper end.

摘要翻译： 用于在浮动平台和张力腿平台上张紧提升管的被动立管张紧器装置利用一个或多个伸长的弹性张紧元件，其在顶端和底端连接到能够被轴向拉伸的提升管的上端。 每个张紧元件在其顶端具有螺纹长度调节杆和张力预紧螺母，其调节轴向长度，以在张紧元件与提升管的连接之间产生预定的预紧力。 可滑动地容纳在长度调节杆和立管管上端上的提升管支撑环被构造成支撑在平台的甲板上并允许提升管的轴向移动。 长度调节杆上的张力锁定螺母当其被支撑在甲板上时可释放地接合长度调节杆与提升器支撑套环。 旋转张力预紧螺母以在张紧支撑套环支撑在甲板上之前拉伸张紧元件以产生预紧力。 然后，张力锁定螺母被旋转以将长度调节杆与提升管支撑轴环接合，使得当支撑在甲板上时，预定的预紧张力在张紧元件的底端和轴环之间传递。 提升管在其上端由甲板支撑并且通过张紧元件保持在张紧状态，同时允许甲板和提升管上端之间的有限量的相对运动。

公开(公告)号：US5421676A

公开(公告)日：1995-06-06

申请号：US14690

申请日：1993-02-08

申请人： Pieter G. Wybro ,  David N. Dunlop

发明人： Pieter G. Wybro ,  David N. Dunlop

IPC分类号： B63B9/06 ,  B63B21/50 ,  E02B17/00 ,  E21B17/01 ,  E21B43/017 ,  B63B35/44

CPC分类号： E21B19/004 ,  B63B21/502 ,  B63B9/065 ,  E21B17/01 ,  E21B41/08 ,  E21B43/017 ,  B63B2021/505 ,  E02B17/00 ,  E02B2017/0039 ,  E02B2017/0043

摘要： A compact offshore tension leg platform having a deck, a hull, and a plurality of elongate tendons securing the hull to an ocean floor foundation provides full well workover and production capabilities for autonomous operation and can be installed and operated in any waterdepth and sustain any environmential loading conditions. The hull supports the well risers of well trees located below the water surface at an elevation in close proximity to the connections of the tendons to the hull. Alternatively the risers and trees may be supported by the deck. A well workover platform, supported by a circular perimeter trackway on the deck may be positioned over any of the well risers for workover operations. Liquid products may be exported from the platform via a seabed pipeline or to a floating tanker moored to a mobile offtake on the deck support column. The hull is configured to minimize loadings in the tendons. All components, except the deck, are installed by a drilling vessel without the need for specialist installation vessels and equipment. The tendons are arranged in groups offset from the hull body to resist platform overturning loadings, and to reduce the tendons pretension required to prevent platform pitch and roll motions. The wells are drilled prior to installation of the hull using a drilling vessel. After installation of the platform, all operations required on the wells are performed autonomously from the platform without the need for another drilling vessel or equipment.

摘要翻译： 紧凑的海上紧张腿部平台，具有甲板，船身和将船体固定在海底基础上的多条细长的钢筋，为自主运行提供了全面的修井和生产能力，可以在任何水深中安装和运行，并维持任何环境 装载条件。 船体支撑位于水面下方的井的井立柱，海拔处靠近腱与船体的连接处。 或者，升降器和树木可以由甲板支撑。 由甲板上的圆形周边轨道支撑的良好的修井平台可以放置在任何井立管上以进行修井操作。 液体产品可以通过海床管线从平台出口到停泊在甲板支撑柱上的移动出口的浮油罐。 船体被配置为最小化腱中的载荷。 除了甲板以外的所有部件均由钻井船安装，无需专业安装船只和设备。 钢筋以与船体相反的方式排列成抵抗平台翻转载荷，并且减少了防止平台俯仰和滚动运动所需的钢筋预张力。 在使用钻井船安装船体之前，钻井。 在安装平台之后，井上所需的所有操作都是从平台自主进行的，而不需要另一个钻井船或设备。

公开(公告)号：US07140317B2

公开(公告)日：2006-11-28

申请号：US10858120

申请日：2004-06-01

申请人： Pieter G. Wybro ,  Chunfa Wu ,  Dagang Zhang

发明人： Pieter G. Wybro ,  Chunfa Wu ,  Dagang Zhang

IPC分类号： B63B35/44

CPC分类号： B63B35/44 ,  B63B1/107

摘要： A central pontoon semisubmersible floating platform for use in offshore applications has a hull configuration including vertical support columns, a central pontoon structure disposed inboard of the columns at a lower end thereof, and a deck structure supported at an upper end of the columns. The vertical columns and pontoon structure are constructed substantially of flat plate. The vertical columns are adjoined to the outer periphery of the central pontoon and have a transverse cross sectional shape with a major axis oriented radially outward from a center point of the hull, and a central vertical axis disposed a distance outward from the pontoon outer periphery. Risers can be supported on the inboard or outboard side of the pontoon and extended to the deck, and the structure can be anchored by mooring lines extending along the outboard face of the columns extending radially outward and downward from their lower ends.

摘要翻译： 用于海上应用的中央浮式半浮式浮动平台具有船体结构，其包括垂直支撑柱，在其下端设置在塔内的中央浮筒结构以及支撑在塔的上端的甲板结构。 立柱和浮筒结构基本上由平板构成。 垂直柱与中央浮筒的外周相邻，并具有从船体中心点径向向外取向的长轴的横截面形状以及从浮筒外周向外设置一定距离的中心垂直轴。 立管可以支撑在浮筒的内侧或外侧，并延伸到甲板上，并且结构可以通过沿着从其下端径向向外和向下延伸的柱的外侧面延伸的系泊线来锚定。

公开(公告)号：US06830413B2

公开(公告)日：2004-12-14

申请号：US10723212

申请日：2003-11-26

申请人： Pieter G. Wybro ,  Terry Kryska

发明人： Pieter G. Wybro ,  Terry Kryska

IPC分类号： B63B3544

CPC分类号： B63B35/4413 ,  B63B13/00 ,  B63B39/03 ,  B63B2035/448

摘要： An apparatus and method for ballasting and de-ballasting a vessel having a hull with a plurality of watertight ballast compartments wherein each ballast compartment has an individual pump caisson extending vertically to the top of the hull, but the ballast/de-ballast system contains no valves within the hull. An external caisson is used to provide a source of seawater. Several submersible pumps are available for rigging into and out of the internal and external caissons and provide the ballast and de-ballast operations via an installed manifold system at the top of the columns. Venting of the ballast tanks may be accomplished through a connection to atmosphere near the top of the pump caissons.

公开(公告)号：US5551802A

公开(公告)日：1996-09-03

申请号：US186901

申请日：1994-01-25

申请人： Pieter G. Wybro

发明人： Pieter G. Wybro

IPC分类号： E02B17/00 ,  B63B9/06 ,  B63B21/50 ,  B63B35/44 ,  E02B20060101 ,  E21B17/01 ,  E21B43/017

CPC分类号： B63B9/065 ,  B63B21/502 ,  E02B17/00 ,  E21B17/01 ,  E21B19/004 ,  E21B41/08 ,  E21B43/017 ,  B63B2021/505 ,  E02B2017/0039 ,  E02B2017/0043

摘要： An offshore tension leg platform having a deck, a hull, and a plurality of elongate tendons securing the hull to an ocean floor foundation provides full well workover and production capabilities for autonomous operation and can be installed and operated in any water depth and sustains any environmental loading conditions. The hull supports well risers of well trees located below the water surface at an elevation in close proximity to the connections of the tendons to the hull. Alternatively the risers and trees may be supported above water by a deck or the trees may be located on the seabed. A workover platform supported by a perimeter trackway on the deck may be positioned over any of the well risers for workover operations. Liquid products may be exported from the platform via a pipeline or to a floating tanker. The hull is configured to minimize loadings in the tendons. All components are installed by a drilling vessel without the need for special installation vessels and equipment. The tendons are arranged in groups offset from the hull body to resist platform overturning loadings, and to reduce the tendons pretension required to prevent platform pitch and roll motions. The wells are drilled prior to installation of the hull using a drilling vessel. After installation of the platform, all operations required on the wells are performed autonomously from the platform and additional wells can be drilled by offsetting the platform and locating a floating drilling rig over the well to be drilled.

摘要翻译： 具有甲板，船体和将船体固定在海底基座上的多条细长的钢筋的海上张力腿平台为自主操作提供了全面的修井和生产能力，可以在任何水深上进行安装和操作并维持任何环境 装载条件。 船体支撑位于水面以下的井的良好立管，海拔处靠近腱与船体的连接处。 或者，提升管和树木可以由甲板支撑在水面上方，或者树木可以位于海床上。 由甲板上的周边轨道支撑的修井平台可以位于任何井立管上用于修井操作。 液体产品可以从平台通过管道或浮式罐车出口。 船体被配置为最小化腱中的载荷。 所有组件均由钻井船安装，无需专门的安装船舶和设备。 钢筋以与船体相反的方式排列成抵抗平台翻转载荷，并且减少了防止平台俯仰和滚动运动所需的钢筋预张力。 在使用钻井船安装船体之前，钻井。 安装平台后，井下所需的所有操作均可从平台自动执行，并可通过偏移平台钻探额外的井，并将钻井平台放置在待钻井上。

公开(公告)号：US5174687A

公开(公告)日：1992-12-29

申请号：US835543

申请日：1992-02-14

申请人： David N. Dunlop ,  Pieter G. Wybro

发明人： David N. Dunlop ,  Pieter G. Wybro

IPC分类号： B63B21/50

CPC分类号： B63B21/502 ,  B63B2021/505

摘要： A method and apparatus for installing and tensioning mooring tethers or tendons between a subsea foundation and a tension leg platform. Load bearing porch members secured on the platform columns near the hull receive the threaded upper end of tethers which are engaged at their lower ends in the foundation. Movable hoists on the platform deck position the upper ends of the tethers on the porches. A platform arrester through which the hoist lines pass is connected with each hoist to move with the platform during vertical motions thereof and selectively engage the hoist lines to allow only downward movement of the platform arrester relative to the hoist lines. A motorized tether tensioning tool connected to each hoist line has a lock-down nut at its lower which releasably connects to the upper end of each tether such that the nut is vertically movable on the tether. The upper ends of the tethers are positioned on the porches and nominal constant tension is applied to the tethers while the platform arresters allow only downward movement relative to the hoist line until platform trim is within predetermined limits. The tensioning tools then run the nuts down on the tethers to engage them on the porches and apply tension in the tethers between the porches and foundation and are thereafter removed whereby tension loading in each tether is transmitted to the platform such that the total platforn tension load is equally distributed between the whole tether complement.

摘要翻译： 一种用于在海底基座和张力腿平台之间安装和张紧系泊系绳或腱的方法和装置。 固定在靠近船体的平台列上的承重门廊部件接收在基座的下端接合的系绳的螺纹上端。 平台甲板上的活动式起重机将系绳的上端位于门廊上。 升降机通过的平台避雷器与每个起重机连接，以在其垂直运动期间与平台一起移动，并且选择性地接合提升线，以允许平台避雷器相对于起重线路的向下运动。 连接到每个提升线的电动系链张紧工具在其下部具有锁定螺母，该锁定螺母可释放地连接到每个系绳的上端，使得螺母在系绳上可垂直移动。 系绳的上端定位在门廊上，并且标称的恒定张力施加到系绳，而平台避雷器仅允许相对于起重线的向下移动，直到平台修剪处于预定限度内。 张紧工具然后将螺母向下运行在系绳上以将它们接合在门廊上，并且在门廊和基座之间的系绳中施加张力，然后移除，由此每个系绳中的张力负载被传递到平台，使得总的平台张力负载 均匀分布在整个系链补体之间。

公开(公告)号：US4762180A

公开(公告)日：1988-08-09

申请号：US12094

申请日：1987-02-05

申请人： Pieter G. Wybro ,  Colin P. Leach

发明人： Pieter G. Wybro ,  Colin P. Leach

IPC分类号： E21B7/128 ,  E21B33/076 ,  E21B43/01 ,  E21B43/017 ,  E21B7/132

CPC分类号： E21B43/017 ,  E21B33/076 ,  E21B41/08 ,  E21B43/01 ,  E21B7/128

摘要： A modular near-surface completion system that positions the production wellheads in a quiescent zone beneath significant wave activity yet within reach of divers for maintenance and inspection. Each subsea well is provided with (a) its own riser, (b) a riser tensioning buoy and (c) a production well tree mounted atop the riser buoy. Produced fluids are transmitted from the well tree to the floating production platform by means of flexible risers suspended in a catenary loop of sufficient length to permit the platform to be maneuvered to position it for drilling or workover of any of the plurality of templates it services.

公开(公告)号：US07452162B2

公开(公告)日：2008-11-18

申请号：US11381610

申请日：2006-05-04

申请人： Pieter G. Wybro ,  Shukai Wu ,  Johannes J. Treu ,  David E. Chaplin

发明人： Pieter G. Wybro ,  Shukai Wu ,  Johannes J. Treu ,  David E. Chaplin

IPC分类号： B63B21/50 ,  B63B21/24

CPC分类号： B63B9/065 ,  B63B1/107 ,  B63B21/502 ,  B63B35/4413 ,  B63B2001/128

摘要： A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence and to provide motion arrest and aid in station keeping. The system includes tensioning devices mounted on the TLP, usually one for each tendon. Each tensioning device is equipped with a pull-down line which is connected to the corresponding tendon. The TLP hull is submerged to lock-off draft by applying tensions to the pull-down lines connected to the top of the tensions, or by a combination of applying tensions to the pull-down lines and ballasting the hull. As the tensioners take in pull-down line, the hull submerges, i.e. the draft increases. After lock-off, high levels of tension in the pull-down lines can be rapidly transferred to the connection sleeves by slacking the pull-down lines, thus allowing the TLP to be made storm-safe much faster than by prior art methods which require de-ballasting to tension the tendons. In concert with TLP installation, the method may be used attach the mooring tendons to the seabed by suspending and lowering the tendons into their foundation receptacle in the seabed.

摘要翻译： 一种使用下拉线将TLP附着到其腱上的方法和系统，以便迅速将船体淹没到安装草图，同时补偿淹没期间固有的船体不稳定性，并提供运动停止和辅助驻车。 该系统包括安装在TLP上的张紧装置，通常每个肌腱一个。 每个张紧装置配备有连接到相应腱的下拉线。 通过对连接在紧张顶部的下拉线施加张力，或通过将下拉线施加张力并对船体进行压载的组合，TLP船体被淹没到锁定吃水。 当张紧器进入下拉线时，船体淹没，即草稿增加。 在锁定之后，下拉线中的高水平张力可以通过松开下拉线而快速地传递到连接套筒，从而允许TLP比现有技术方法要快得多 去压载以张紧肌腱。 与TLP安装协调一致，该方法可以通过将腱悬挂和下降到海底的基座容器中而将系泊腱附接到海底。

公开(公告)号：US07044685B2

公开(公告)日：2006-05-16

申请号：US10789659

申请日：2004-02-27

申请人： Pieter G. Wybro ,  Shukai Wu ,  Johannes J. Treu ,  David E. Chaplin

发明人： Pieter G. Wybro ,  Shukai Wu ,  Johannes J. Treu ,  David E. Chaplin

IPC分类号： E02D29/09 ,  E02B17/08

CPC分类号： B63B9/065 ,  B63B1/107 ,  B63B21/502 ,  B63B35/4413 ,  B63B2001/128

摘要： A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence and to provide motion arrest and aid in station keeping. The system includes tensioning devices mounted on the TLP, usually one for each tendon. Each tensioning device is equipped with a pull-down line which is connected to the corresponding tendon. The TLP hull is submerged to lock-off draft by applying tensions to the pull-down lines connected to the top of the tensions, or by a combination of applying tensions to the pull-down lines and ballasting the hull. As the tensioners take in pull-down line, the hull submerges, i.e. the draft increases. After lock-off, high levels of tension in the pull-down lines can be rapidly transferred to the connection sleeves by slacking the pull-down lines, thus allowing the TLP to be made storm-safe much faster than by prior art methods which require de-ballasting to tension the tendons. In concert with TLP installation, the method may be used attach the mooring tendons to the seabed by suspending and lowering the tendons into their foundation receptacle in the seabed.

摘要翻译： 一种使用下拉线将TLP附着到其腱上的方法和系统，以便迅速将船体淹没到安装草图，同时补偿淹没期间固有的船体不稳定性，并提供运动停止和辅助驻车。 该系统包括安装在TLP上的张紧装置，通常每个肌腱一个。 每个张紧装置配备有连接到相应腱的下拉线。 通过对连接在紧张顶部的下拉线施加张力，或通过将下拉线施加张力并对船体进行压载的组合，TLP船体被淹没到锁定吃水。 当张紧器进入下拉线时，船体淹没，即草稿增加。 在锁定之后，下拉线中的高水平张力可以通过松开下拉线而快速地传递到连接套筒，从而允许TLP比现有技术方法要快得多 去压载以张紧肌腱。 与TLP安装协调一致，该方法可以通过将腱悬挂和下降到海底的基座容器中而将系泊腱附接到海底。