CN1031336C - 采油船用升降器 - Google Patents

采油船用升降器 Download PDF

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Publication number
CN1031336C
CN1031336C CN92112493A CN92112493A CN1031336C CN 1031336 C CN1031336 C CN 1031336C CN 92112493 A CN92112493 A CN 92112493A CN 92112493 A CN92112493 A CN 92112493A CN 1031336 C CN1031336 C CN 1031336C
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tower
rigid pipe
lifter
flexible
pipe
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CN1073144A (zh
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S·阿斯克斯塔德
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Norsk Hydro ASA
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Meat And Fish (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Massaging Devices (AREA)

Abstract

与一浮动结构，例如采油气的钻井或开采船的挠性升降器相关的装置。该挠性升降器(4)从海床上的一井口穿过该浮动结构上的一塔(2)通向该塔上的一管路系统。该升降器(4)与一刚性管(5)相联，刚性管(5)从塔(2)的下缘穿过该塔内的导管通向甲板上的管路系统，并安装成与垂直轴成一(α)角，其相应于该升降器的自然角。

Description

采油船用升降器
本发明涉及一装置，其与一用于例如采油气的钻井或开采船之类的漂浮结构的挠性升降器相关，该升降器从海床上的一井口延升至该漂浮结构上的管道系统。
由于油气开采深度不断增加，增加了使用漂浮结构的需要。由于漂浮结构相对海床移动，需使用挠性升降器，如上所述，其从海床上的一井口延伸至该漂浮结构的管道系统，该漂浮结构或动态锚定或用锚索装置锚固于海床。
为使该漂浮结构相应于风或气候转动，该升降器及锚索由一个可转动地安装在该结构上的所谓的塔引导。该挠性升降器通常穿过在该塔内的一连续导管，并由一联接器直接联接到该塔的甲板上的管道系统，该导管垂直地安装在该塔内，为避免升降器受拧绞并与塔下侧摩擦，公知方法为，或者为升降器提供一限弯器，或者使该导管端呈漏斗形来确保该挠性升降器的弯曲半径有限。
用连续的导管很难或(取决于直径)不可能检查升降器在导管内的部件。
应用限弯器的一个主要缺点是其压力使挠性管受到多余的应力。这些力在挠性管内的各层间产生，使管壁内部损坏破裂。
由于管壁内部损坏破裂，管壁和限弯器之间的损坏和破裂及塑料的收缩，在辅件限弯器和管壁之间还会出现震动，使得限制器位移，从而升降器受到有害的弯曲及升降器在进入导管的部分的外部损坏破裂。这种损环破裂和震动无法由外部偶而的检查查出。
使用漏斗形导管端的缺点是升降器受到集中的横向载荷。另一缺点是损坏和破裂发生在升降器和漏斗之间的面上和由于这些集中的横向载荷，升降器内壁损坏破裂。
有时为减小升降器的损坏破裂，在其与导管之间加入隔离件。但这使得不能检查导管内的挠性升降器。
上述两种方法，用限弯器或漏斗形部分都存在若干使升降器破裂、油气泄漏的缺点。
本发明的目的是提供一种消除了上述缺点的挠性升降器，即消除了该升降器的非控制弯曲和延伸。进而达到的目的是防火并消除内部和外部损坏破裂。此外，可对升降器穿过塔的区域进行全面检查。
为实现本发明的目的可采用下述结构的方式。一种与一浮动结构，例如采油、气的钴井或开采船的挠性升降器相关的装置，其中一挠性升降器从海床上的一井口穿过该浮动结构上的一塔内的导管伸向该塔上的一管路系统，该挠性升降器联接一刚性管，该刚性管从塔的下缘穿过在该塔内的导管伸向甲板上的管路系统，该刚性管(5)安装成与垂直面成α角，刚性管穿过在塔的甲板结构内的上导套和在塔的基础结构内的下导套而上述上导套和下导套把刚性管固定就位，在挠性升降器和刚性管之间有挠性联接器。
现在通过一实施例及附图对本发明进行更详细的描述。
图1示出了具有一塔和若干升降器的一条船的一部分。
图2以大比例示出了图1中一升降器的上部。
如上所述，图1示出了作为塔钻井或采油船的漂浮结构的一部分。该船利用锚链3通过塔2锚固。油和气从海床(未示出)上的井口通过升降器4流入一管路系统，图2示出了一个穿过塔2的升降器的上部。本发明的挠性升降器与一金属或其它材料的刚性管5联接，而不象公知的挠性升降器那样穿过一连续导管向上延伸，并直接通向塔甲板上的管路系统。刚性管5从塔的下缘穿过一底结构8内的导套6，向上穿过塔的甲板9内的导套7延伸到甲板上的管路系统。为刚性管5配以合适的隔离件10，11，以便防止管和导套6，7间的损坏破裂。为便于管5插入和抽出(安装和拆卸)这些套都设有漏斗形端12隔离件上设有锥形端13。通过使用上下导套式的分开导管可对塔内的升降器作全面检查。采用了刚性管还可对升降器内部全面检查，例如通过超声波。而采用挠性管则不能。
按照本发明一重要特征，该刚性管安装呈一α角，该角与升降器的自然角基本相同。升降器这样装的优点是导套下缘弯曲，所受平均应力小。采用刚性管5的一附带的优点是挠性升降器上的负荷力被可焊在刚性管5上的刚性隔离器10，11所吸收，刚性管不受损坏和破裂(损坏只在隔离件和导套之间发生)。
优选可在挠性升降器4和刚性管5之间安装一挠性联接器14。这可进一步减小挠性升降器的弯曲。而且优选将一短刚性管15插在该挠性联接器14和挠性管4之间。其优点是弯曲发生在该部分(两端的刚性管)而不是在挠性升降器4。
在其它方面，该挠性部分可以是任一标准形的“弯接头”，其由带内管的加强合成橡胶制成。也可使用一种高弹性模数的金属管，例如钛。
虽然上述一例显示了如何通过采用一形式为两导套的分离导管得到优点，应注意，本发明如权利要求所定义，并不为该例所限，也可由一连续的导管实现。
本发明提供了一升降器，其不受有害的损坏破裂或非控制的弯曲或延伸，这些破损会引起裂开及油气泄漏。而且由于用金属管作为穿过船体的该升降器的部分，而不是塑料的挠性管，实际上本发明的防火性能更好。还有，按照本发明的解决方案占用空间相当少。

Claims (3)

1.与一浮动结构，例如采油、气的钻井或开采船的挠性升降器相关的装置，其中一挠性升降器(4)从海床上的一井口穿过该浮动结构上的一塔(2)内的导管伸向该塔上的一管路系统，该挠性升降器(4)联接一刚性管(5)，该刚性管从塔(2)的下缘穿过在该塔内的导管伸向甲板上的管路系统，该刚性管(5)安装成与垂直面成一(α)角，其特征在于，刚性管(5)穿过在塔的甲板结构(9)内的上导套(7)和在塔的基础结构(9)内的下导套(6)而上述上导套(7)和下导套(6)把刚性管(5)固定就位，在挠性升降器(4)和刚性管(5)之间有挠性联接器(14)。
2.如权利要求1所述的装置，其特征在于：在挠性联接器(14)和挠性管(4)之间提供一短刚性管(15)。
3.如权利要求1或2所述的装置，其特征在于：在刚性管(5)套着导套(6)和(7)的区域提供隔离件(10)和(11)。
CN92112493A 1991-09-30 1992-09-30 采油船用升降器 Expired - Lifetime CN1031336C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO913824A NO177543C (no) 1991-09-30 1991-09-30 Anordning ved fleksibelt stigerör
NO913824 1991-09-30

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CN1073144A CN1073144A (zh) 1993-06-16
CN1031336C true CN1031336C (zh) 1996-03-20

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US (1) US5336020A (zh)
EP (1) EP0558741B1 (zh)
CN (1) CN1031336C (zh)
CA (1) CA2094699C (zh)
DE (1) DE69206779T2 (zh)
FI (1) FI110766B (zh)
NO (1) NO177543C (zh)
WO (1) WO1993007048A1 (zh)

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CN117306513B (zh) * 2023-09-26 2024-04-09 广州公路工程集团有限公司 一种路桥抢险应急施工的无定向支护方法及支护装置

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Publication number Publication date
US5336020A (en) 1994-08-09
NO177543C (no) 1995-10-04
FI110766B (fi) 2003-03-31
DE69206779D1 (de) 1996-01-25
EP0558741B1 (en) 1995-12-13
CA2094699C (en) 2004-02-17
DE69206779T2 (de) 1996-06-05
WO1993007048A1 (en) 1993-04-15
EP0558741A1 (en) 1993-09-08
NO177543B (no) 1995-06-26
CA2094699A1 (en) 1993-03-31
FI932455A0 (fi) 1993-05-28
NO913824L (no) 1993-03-31
NO913824D0 (no) 1991-09-30
CN1073144A (zh) 1993-06-16
FI932455L (fi) 1993-05-28

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Expiration termination date: 20120930

Granted publication date: 19960320