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1. 发明授权

EP1266118B1 TENSIONING AND HEAVE COMPENSATING ARRANGEMENT AT A RISER 有权
标题翻译：夹具DÜNUNGSKOMPENSATOREN于立式
公开(公告)号：EP1266118B1
公开(公告)日：2005-10-05
申请号：EP00911499.2
申请日：2000-03-20
申请人： National Oilwell Norway AS
发明人： GJEDEBO, Jon, Grude
IPC分类号： E21B19/09 , E21B17/01
CPC分类号： E21B19/006
摘要： A special installation of a riser (10) that extends between an item of subsea equipment (14) and a surface vessel (12) has been described, which installation in particular is intended for use in connection with offshore oil extration, and in which the rise (10) is provided with a telescopic section. For the purpose of heave compensation, the riser (10) is installed in a manner such tat said telescopic section (18) is located at the lower end of the riser (10), heave compensation being effected by the telescopic mobility of the riser (10), while the mass of the riser (10), when suspended in this manner, keeps the rise (10) tensioned.

2. 发明公开

EP1266117A1 A RISER DEVICE 审中-公开
标题翻译： STEIGLEITUNG
公开(公告)号：EP1266117A1
公开(公告)日：2002-12-18
申请号：EP00955167.2
申请日：2000-03-20
申请人： National Oilwell Norway AS
发明人： GJEDEBO, Jon, Grude
IPC分类号： E21B17/01 , E21B19/24
CPC分类号： E21B17/01
摘要： A riser (18) extends between a surface vessel, e.g. a drillship (16), and an item of subsea equipment, e.g. a blowout preventer valve (12) on the seabed (10). The riser (18) is equipped with at least one thruster, for instance in the form of one or more motor driven positional propellers (201, 202), which is arranged so as to be able to exert an essentially horizontal thrust force on the riser (18) in order to counteract the lateral forces from the oceanic currents, so as to maintain the riser (18) in a position that corresponds to the desired course from the surface vessel (16) to the subsea equipment (12).

3. 发明公开

EP1266118A1 TENSIONING AND HEAVE COMPENSATING ARRANGEMENT AT A RISER 有权
标题翻译：提升机的张紧和倾斜补偿装置
公开(公告)号：EP1266118A1
公开(公告)日：2002-12-18
申请号：EP00911499.2
申请日：2000-03-20
申请人： National Oilwell Norway AS
发明人： GJEDEBO, Jon, Grude
IPC分类号： E21B19/09 , E21B17/01
CPC分类号： E21B19/006
摘要： A special installation of a riser (10) that extends between an item of subsea equipment (14) and a surface vessel (12) has been described, which installation in particular is intended for use in connection with offshore oil extration, and in which the rise (10) is provided with a telescopic section. For the purpose of heave compensation, the riser (10) is installed in a manner such tat said telescopic section (18) is located at the lower end of the riser (10), heave compensation being effected by the telescopic mobility of the riser (10), while the mass of the riser (10), when suspended in this manner, keeps the rise (10) tensioned.
摘要翻译：已经描述了在海底设备（14）和水面船舶（12）之间延伸的立管（10）的特殊安装，所述安装特别旨在用于与海上石油渗漏结合使用，并且其中上升（10）设有伸缩部分。为了起伏补偿的目的，立管（10）以所述伸缩节段（18）位于立管（10）的下端的方式安装，升降补偿通过立管（10）的伸缩活动性来实现 10），而立管（10）的质量当以这种方式悬挂时，保持上升（10）张紧。

4. 发明公开

EP1381751A1 RISER TENSIONING ARRANGEMENT 审中-公开
标题翻译： JIG立管
公开(公告)号：EP1381751A1
公开(公告)日：2004-01-21
申请号：EP02717223.8
申请日：2002-04-23
申请人： National Oilwell Norway AS
发明人： GJEDEBO, Jon, Grude
IPC分类号： E21B19/09
CPC分类号： E21B19/006
摘要： An arrangement for transferring loads by means of one or more hydraulic cylinder-like actuators (19, 26, 40) in order to establish and maintain tension in a riser (1) of the type typically used in offshore petroleum production, where the riser (1) constitutes a connection between the sea bed (2) and an installation (4) on or near the surface of the sea (6), and where the required pressure difference between the pressure side(s) (18, 42) and the depressurised side(s) (17, 46) of the actuator(s) (19, 29, 40) is constituted by a hydrostatic pressure difference.

5. 发明公开

EP1305527A1 HYDRAULIC ACTUATOR 审中-公开
标题翻译：液压机构
公开(公告)号：EP1305527A1
公开(公告)日：2003-05-02
申请号：EP00919173.5
申请日：2000-04-12
申请人： National Oilwell Norway AS
发明人： GJEDEBO, Jon, Grude
IPC分类号： F15B15/08
CPC分类号： F15B11/044 , F15B2211/20576 , F15B2211/40515 , F15B2211/41527 , F15B2211/7052 , F15B2211/7053 , F15B2211/7716
摘要： The aim has been to provide a simplified and improved hydraulic actuator in the form of a hydraulic piston type cylinder (10) meant for use under water or in other environments, in which the actuator is exposed to elevated ambient pressure. The actuator comprises a force-exerting element in the form of a piston (14), forming a movable partition wall between two chambers (24, 26). This force-exerting element, the piston, is driven in one of two opposite directions, when different pressures prevail in the two chambers (24, 26). According to the invention, each of the two chambers (24, 26) are to allow evacuation, as at least one chamber, the first chamber (24), is to be provided with an inlet (36) with a shut-off valve (38) arranged thereto, and in contact with the ambient medium. By an open inlet (36) water or other surrounding medium is admitted into a first chamber (24) and drives the piston (14) into said second evacuated chamber (26) against the action of a return spring (28).

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