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公开(公告)号：US5924822A
公开(公告)日：1999-07-20
申请号：US951095
申请日：1997-10-15
CPC分类号： B63B35/003 , B63B35/44 , B63B9/065 , B63B2001/044
摘要： An apparatus and method for the installation of a deck on an offshore substructure. The invention is particularly useful with a floating substructure. Two independent pontoons each have two columns spaced apart from each other that extend upwardly from the pontoons. On each pontoon, a support beam attached to the columns spans the space between the columns. Each pontoon is provided with ballast tanks that allow the pontoons to be selectively ballasted or de-ballasted to control pontoon depth for receiving a deck or installing a deck on an offshore substructure. The pontoons may be ballasted down during transit of the deck such that the main body portion of the pontoons is below significant wave action and the columns present a relatively small water plane area. The pontoons allow the deck to be placed directly above the offshore substructure. For a floating substructure, the pontoons are ballasted while the floating substructure is simultaneously de-ballasted to transfer the deck to the floating substructure.
摘要翻译： 一种用于在海上子结构上安装甲板的装置和方法。 本发明对于浮动子结构特别有用。 两个独立的浮筒各自具有彼此间隔开的两列，从浮体向上延伸。 在每个浮筒上，连接到柱的支撑梁横跨柱之间的空间。 每个浮筒都设有压载舱，允许浮船被选择性地压载或卸载，以控制浮桥深度用于接收甲板或在海底子结构上安装甲板。 在甲板运输过程中，浮船可能被压载，使得浮船的主体部分低于显着的波浪作用，并且柱呈现相对较小的水平面积。 浮桥允许甲板直接放置在离岸子结构的正上方。 对于浮动子结构，浮筒被压载，而浮动底座同时被压载以将甲板转移到浮动底座。
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公开(公告)号：US06299383B1
公开(公告)日：2001-10-09
申请号：US09333060
申请日：1999-06-14
IPC分类号： E02D2500
CPC分类号： B63B35/003 , B63B1/107 , B63B9/065 , B63B35/44 , B63B2009/067
摘要： An apparatus and method for the installation of a deck on an offshore substructure. The invention is particularly useful with a floating substructure. Two independent pontoons each have two columns spaced apart from each other that extend upwardly from the pontoons. On each pontoon, a support beam attached to the columns spans the space between the columns. In another embodiment, there is no support beam across the space between the columns. Each pontoon is provided with ballast tanks that allow the pontoons to be selectively ballasted or de-ballasted to control pontoon depth for receiving a deck or installing a deck on an offshore substructure. The pontoons may be ballasted down during transit of the deck such that the main body portion of the pontoons is below significant wave action and the columns present a relatively small water plane area. The pontoons allow the deck to be placed directly above the offshore substructure. For a floating substructure, the pontoons are ballasted while the floating substructure is simultaneously de-ballasted to transfer the deck to the floating substructure.
摘要翻译： 一种用于在海上子结构上安装甲板的装置和方法。 本发明对于浮动子结构特别有用。 两个独立的浮筒各自具有彼此间隔开的两列，从浮体向上延伸。 在每个浮筒上，连接到柱的支撑梁横跨柱之间的空间。 在另一个实施例中，在柱之间的空间上不存在支撑梁。 每个浮筒都设有压载舱，允许浮船被选择性地压载或卸载，以控制浮桥深度用于接收甲板或在海底子结构上安装甲板。 在甲板运输过程中，浮船可能被压载，使得浮船的主体部分低于显着的波浪作用，并且柱呈现相对较小的水平面积。 浮桥允许甲板直接放置在离岸子结构的正上方。 对于浮动子结构，浮筒被压载，而浮动底座同时被压载以将甲板转移到浮动底座。
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公开(公告)号：US08899881B2
公开(公告)日：2014-12-02
申请号：US13288426
申请日：2011-11-03
CPC分类号： B63B21/50 , B63B1/107 , B63B35/4413 , B63B2001/128
摘要： An offshore structure comprises a hull having a longitudinal axis and including a first column and a second column moveably coupled to the first column. Each column has a longitudinal axis, a first end, and a second end opposite the first end. In addition, the offshore structure comprises an anchor coupled to the second end of the second column and configured to secure the hull to the sea floor. The first column includes a variable ballast chamber and a first buoyant chamber positioned between the variable ballast chamber and the first end of the first column. The first buoyant chamber is filled with a gas and sealed from the surrounding environment. The second column includes a variable ballast chamber. Further, the offshore structure comprises a topside mounted to the hull.
摘要翻译： 海上结构包括具有纵向轴线并包括可移动地联接到第一列的第一柱和第二柱的船体。 每列具有纵向轴线，第一端部和与第一端部相对的第二端部。 此外，海上结构包括锚固件，其联接到第二塔的第二端并且构造成将船体固定到海底。 第一列包括可变镇流器室和位于可变压载室与第一列的第一端之间的第一浮力室。 第一个浮力室充满了气体，并与周围环境密封。 第二列包括可变镇流器室。 此外，海上结构包括安装在船体上的顶面。
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公开(公告)号：US08322460B2
公开(公告)日：2012-12-04
申请号：US12131598
申请日：2008-06-02
CPC分类号： E21B21/001 , E21B21/08
摘要： Systems and methods for lifting drilling fluid from a well bore in a subsea formation are disclosed. Some system embodiments include a drill string suspended within a drilling riser to form the well bore, and a drilling fluid source for supplying drilling fluid through the drill string during drilling. A diverter is coupled between the drilling riser and a return line, while a power riser coupled to the return line at an interface. A lift fluid source supplies lift fluid through the power riser into the return line. The lift fluid is intermittently injected from the power riser through the interface into the return line to form one or more slugs of lift fluid positioned between slugs of drilling fluid, such that the combined density of lift fluid and drilling fluid in the return line is less than the density of the drilling fluid alone.
摘要翻译： 公开了用于从海底地层中的井眼提升钻井液的系统和方法。 一些系统实施例包括悬挂在钻井立管中以形成井眼的钻柱，以及用于在钻井期间通过钻柱提供钻井液的钻井液源。 分流器连接在钻井立管和返回管路之间，而功率提升器在界面处耦合到返回管线。 提升流体源将提升流体通过电力提升管提供到回流管线中。 提升液体从供电立管通过界面间歇地注入返回管线，以形成一个或多个位于钻井液的lug塞之间的提升流体段，使得回流管路中的提升液和钻井液的组合密度较小 比单独钻井液的密度要高。
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公开(公告)号：US20120285698A1
公开(公告)日：2012-11-15
申请号：US13555407
申请日：2012-07-23
IPC分类号： E21B33/035
CPC分类号： E21B21/001 , E21B21/08
摘要： Systems and methods for lifting drilling fluid from a well bore in a subsea formation are disclosed. Some system embodiments include a drill string suspended within a drilling riser to form the well bore, and a drilling fluid source for supplying drilling fluid through the drill string during drilling. A diverter is coupled between the drilling riser and a return line, while a power riser coupled to the return line at an interface. A lift fluid source supplies lift fluid through the power riser into the return line. The lift fluid is intermittently injected from the power riser through the interface into the return line to form one or more slugs of lift fluid positioned between slugs of drilling fluid, such that the combined density of lift fluid and drilling fluid in the return line is less than the density of the drilling fluid alone.
摘要翻译： 公开了用于从海底地层中的井眼提升钻井液的系统和方法。 一些系统实施例包括悬挂在钻井立管中以形成井眼的钻柱，以及用于在钻井期间通过钻柱提供钻井液的钻井液源。 分流器连接在钻井立管和返回管路之间，而功率提升器在界面处耦合到返回管线。 提升流体源将提升流体通过电力提升管提供到回流管线中。 提升液体从供电立管通过界面间歇地注入返回管线，以形成一个或多个位于钻井液的lug塞之间的提升流体段，使得回流管路中的提升液和钻井液的组合密度较小 比单独钻井液的密度要高。
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公开(公告)号：US08453758B2
公开(公告)日：2013-06-04
申请号：US13555407
申请日：2012-07-23
CPC分类号： E21B21/001 , E21B21/08
摘要： Systems and methods for lifting drilling fluid from a well bore in a subsea formation are disclosed. Some system embodiments include a drill string suspended within a drilling riser to form the well bore, and a drilling fluid source for supplying drilling fluid through the drill string during drilling. A diverter is coupled between the drilling riser and a return line, while a power riser coupled to the return line at an interface. A lift fluid source supplies lift fluid through the power riser into the return line. The lift fluid is intermittently injected from the power riser through the interface into the return line to form one or more slugs of lift fluid positioned between slugs of drilling fluid, such that the combined density of lift fluid and drilling fluid in the return line is less than the density of the drilling fluid alone.
摘要翻译： 公开了用于从海底地层中的井眼提升钻井液的系统和方法。 一些系统实施例包括悬挂在钻井立管中以形成井眼的钻柱，以及用于在钻井期间通过钻柱提供钻井液的钻井液源。 分流器连接在钻井立管和返回管路之间，而功率提升器在界面处耦合到返回管线。 提升流体源将提升流体通过电力提升管提供到回流管线中。 提升液体从供电立管通过界面间歇地注入返回管线，以形成一个或多个位于钻井液的lug塞之间的提升流体段，使得回流管路中的提升液和钻井液的组合密度较小 比单独钻井液的密度要高。
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公开(公告)号：US20120093587A1
公开(公告)日：2012-04-19
申请号：US13275648
申请日：2011-10-18
CPC分类号： E02B17/027 , B63B21/27 , B63B21/50 , B63B35/003 , B63B35/4406 , B63B2021/505 , E02B2017/0039 , E02B2017/0047
摘要： An offshore structure comprises a hull having a longitudinal axis, a first end, and a second end opposite the first end. In addition, the structure comprises an anchor coupled to the lower end of the hull and configured to secure the hull to the sea floor. The anchor has an aspect ratio less than 3:1. The hull includes a variable ballast chamber positioned axially between the first end and the second end of the hull and a first buoyant chamber positioned between the variable ballast chamber and the first end of the hull. The first buoyant chamber is filled with a gas and sealed from the surrounding environment. Further, the structure comprises a ballast control conduit in fluid communication with the variable ballast chamber and configured to supply a gas to the variable ballast chamber. The structure also comprises a topside mounted to the first end of the hull.
摘要翻译： 海上结构包括具有纵向轴线，第一端和与第一端相对的第二端的船体。 此外，该结构包括锚固件，其联接到船体的下端并且被构造成将船体固定到海底。 锚点的纵横比小于3：1。 船体包括轴向定位在船体的第一端和第二端之间的可变镇流器室，以及位于可变镇流器室和船体的第一端之间的第一浮力室。 第一个浮力室充满了气体，并与周围环境密封。 此外，该结构包括与可变镇流器流体连通并且被配置为向可变镇流器室供应气体的镇流器控制导管。 该结构还包括安装到船体的第一端的顶面。
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公开(公告)号：US20080296062A1
公开(公告)日：2008-12-04
申请号：US12131598
申请日：2008-06-02
IPC分类号： E21B7/128
CPC分类号： E21B21/001 , E21B21/08
摘要： Systems and methods for lifting drilling fluid from a well bore in a subsea formation are disclosed. Some system embodiments include a drill string suspended within a drilling riser to form the well bore, and a drilling fluid source for supplying drilling fluid through the drill string during drilling. A diverter is coupled between the drilling riser and a return line, while a power riser coupled to the return line at an interface. A lift fluid source supplies lift fluid through the power riser into the return line. The lift fluid is intermittently injected from the power riser through the interface into the return line to form one or more slugs of lift fluid positioned between slugs of drilling fluid, such that the combined density of lift fluid and drilling fluid in the return line is less than the density of the drilling fluid alone.
摘要翻译： 公开了用于从海底地层中的井眼提升钻井液的系统和方法。 一些系统实施例包括悬挂在钻井立管中以形成井眼的钻柱，以及用于在钻井期间通过钻柱提供钻井液的钻井液源。 分流器连接在钻井立管和返回管路之间，而功率提升器在界面处耦合到返回管线。 提升流体源将提升流体通过电力提升管提供到回流管线中。 提升液体从供电立管通过界面间歇地注入返回管线，以形成一个或多个位于钻井液的lug塞之间的提升流体段，使得回流管路中的提升液和钻井液的组合密度较小 比单独钻井液的密度要高。
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公开(公告)号：US09758941B2
公开(公告)日：2017-09-12
申请号：US13275648
申请日：2011-10-18
CPC分类号： E02B17/027 , B63B21/27 , B63B21/50 , B63B35/003 , B63B35/4406 , B63B2021/505 , E02B2017/0039 , E02B2017/0047
摘要： An offshore structure comprises a hull having a longitudinal axis, a first end, and a second end opposite the first end. In addition, the structure comprises an anchor coupled to the lower end of the hull and configured to secure the hull to the sea floor. The anchor has an aspect ratio less than 3:1. The hull includes a variable ballast chamber positioned axially between the first end and the second end of the hull and a first buoyant chamber positioned between the variable ballast chamber and the first end of the hull. The first buoyant chamber is filled with a gas and sealed from the surrounding environment. Further, the structure comprises a ballast control conduit in fluid communication with the variable ballast chamber and configured to supply a gas to the variable ballast chamber. The structure also comprises a topside mounted to the first end of the hull.
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公开(公告)号：US20120107052A1
公开(公告)日：2012-05-03
申请号：US13288426
申请日：2011-11-03
CPC分类号： B63B21/50 , B63B1/107 , B63B35/4413 , B63B2001/128
摘要： An offshore structure comprises a hull having a longitudinal axis and including a first column and a second column moveably coupled to the first column. Each column has a longitudinal axis, a first end, and a second end opposite the first end. In addition, the offshore structure comprises an anchor coupled to the second end of the second column and configured to secure the hull to the sea floor. The first column includes a variable ballast chamber and a first buoyant chamber positioned between the variable ballast chamber and the first end of the first column. The first buoyant chamber is filled with a gas and sealed from the surrounding environment. The second column includes a variable ballast chamber. Further, the offshore structure comprises a topside mounted to the hull.
摘要翻译： 海上结构包括具有纵向轴线并包括可移动地联接到第一列的第一柱和第二柱的船体。 每列具有纵向轴线，第一端部和与第一端部相对的第二端部。 此外，海上结构包括锚固件，其联接到第二塔的第二端并且构造成将船体固定到海底。 第一列包括可变镇流器室和位于可变压载室与第一列的第一端之间的第一浮力室。 第一个浮力室充满了气体，并与周围环境密封。 第二列包括可变镇流器室。 此外，海上结构包括安装在船体上的顶面。
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