EP3715580B1 - Kompensiertes hebesystem und verfahren - Google Patents

Kompensiertes hebesystem und verfahren Download PDF

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Publication number
EP3715580B1
EP3715580B1 EP20163969.7A EP20163969A EP3715580B1 EP 3715580 B1 EP3715580 B1 EP 3715580B1 EP 20163969 A EP20163969 A EP 20163969A EP 3715580 B1 EP3715580 B1 EP 3715580B1
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EP
European Patent Office
Prior art keywords
block
crown block
sheave assembly
crown
intermediate sheave
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EP20163969.7A
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English (en)
French (fr)
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EP3715580A1 (de
Inventor
Jean-Philippe Huchon
Dag Holen
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Cameron Technologies Ltd
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Cameron Technologies Ltd
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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
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/09—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/02—Devices for facilitating retrieval of floating objects, e.g. for recovering crafts from water
    • 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
    • E21B19/02—Rod or cable suspensions

Definitions

  • the present disclosure relates to systems and methods for compensating for motion of a drilling platform or vessel. More specifically, this disclosure relates to passive compensation of a drill string suspended from a drilling platform or vessel.
  • Natural resources such as oil and gas
  • drilling and production systems are often employed to access and extract the resource.
  • These systems may be located onshore or offshore depending on the location of the desired resource. Further, such systems may include a wide variety of components, such as various casings, fluid conduits, tools, and the like, that facilitate extraction of the resource from a well during drilling or extraction operations.
  • a drilling rig can be provided to drill a well to access the desired resource.
  • a drill string can be suspended from the drilling rig and rotated to drill the well. While the drill string can be suspended from a kelly and driven by a rotary table on the drill floor of the drilling rig, in most instances the drill string is instead suspended from and driven by a top drive of the drilling rig.
  • Such a top drive generally includes a drive stem (also referred to as a main shaft) that can be connected to the drill string.
  • One or more motor(s) in the top drive is/are connected to the drive stem to drive rotation of the drill string via the drive stem.
  • the top drive can be raised and lowered via a derrick or a mast and a hoisting system to raise and lower the drill string within the well.
  • the drilling rig also includes a hoisting system configured to raise and to lower drilling equipment relative to the drill floor.
  • the hoisting system typically includes a crown block, a traveling block, a draw-works system, and a cable assembly (e.g., wire) that extends from the draw-works system and couples the crown block to the traveling block.
  • a floating rig such as on a platform or drilling vessel or drillship is often employed.
  • vessel motions such as might be caused by wave motion, tidal variation and the like.
  • the payload often a drill string having a drill bit at its bottom end, is suspended from the travelling block.
  • heave compensation systems Two main types of heave compensation systems are traditionally employed: active draw-works heave compensation systems, and passive top mounted or crown mounted compensation system, sometimes with some active heave assistance.
  • Active draw-works heave compensation systems rely on the draw-works system to actively adjust the hoisting system to account for vessel motion.
  • Some active heave compensation systems actively control the draw-works of the hoisting system to draw in and pay out the cable in accordance with vessel motion in order to maintain a desired position of the travelling block.
  • active draw-works compensating systems can be very accurate and precise, they may have problems in cases where one or more systems on which it relies (e.g. control system, mechanical draw-works system, or power systems) experiences failure or malfunction.
  • Top mounted or crown mounted compensation systems can be designed or retrofitted onto the top or crown block of the derrick. Such systems can be active or passive in nature and typically function to dampen or compensate for movement in the crown block relative to the travelling block. Passive top or crown mounted compensator system may incorporate hydraulic cylinders, gas accumulators and the like. Due to their nature, top or crown mounted compensator systems tend to add quite a bit of mass to the top of the derrick and can be quite costly to retrofit.
  • WO 2018/150022 A1 discloses a hoisting system for a drilling rig with a passive compensation system in the form of e.g. a crown block compensator.
  • WO 01/18350 A1 discloses a hoisting device with a compensator built into a hoisting cable system.
  • US 10.099.752 B2 discloses an offshore drilling system with a heave compensation arrangement.
  • a hoisting system for suspending a drilling string from a floating drilling platform or vessel according to claim 1 is described.
  • the hoisting system includes a crown block mounted atop a derrick.
  • the crown block includes a plurality of crown block sheaves and being in fixed relation to the derrick.
  • the hoisting system also includes: a traveling block including a number of traveling block sheaves; and an intermediate sheave assembly moveable between and alternatively connectable to the crown and traveling blocks.
  • the intermediate sheave assembly is further connectable to a compensation system that is configured to provide movement between the intermediate sheave assembly and the crown block to compensate for motion of the floating drilling platform or vessel.
  • the compensation system comprises one or more compensating cylinders.
  • the hoisting system is configured for a first load capacity when the intermediate sheave assembly is connected to the crown block, and the hoisting system is configured for a second higher load capacity when the intermediate sheave assembly is connected to the traveling block.
  • the hoisting system can be configured for a first travel speed when the intermediate sheave assembly is connected to the crown block and configured for a second lower travel speed when the intermediate sheave assembly is connected to the traveling block.
  • the traveling block sheaves are arranged to include a gap sized to accommodate the one or more sheaves of intermediate assembly, and the motion of the floating drilling platform or vessel includes heave motion.
  • a method according to claim 6 is described to compensate for motion of a floating drilling platform or vessel being transferred to a drill string.
  • the drill string is suspended by a hoisting system that is mounted on the floating drilling platform or vessel.
  • the hoisting system also includes a crown block and a travelling block.
  • the method includes: connecting an intermediate sheave assembly to a crown block structure in fixed relationship with the crown block via a compensation system; and compensating for motion of the floating drilling platform or vessel being transferred to the drill string that is suspended by the travelling block at least in part with the compensation system by allowing vertical motion between the crown block structure and the intermediate sheave assembly.
  • the present embodiments are generally directed to drilling and production system comprising a hoisting system that may be utilized to support and lift a load (e.g., pipe section, drill pipe collar, casing section, or the like) within a drilling and production system.
  • a load e.g., pipe section, drill pipe collar, casing section, or the like
  • certain embodiments disclosed herein refer to pipe sections and drill strings; however, it should be understood that the disclosed embodiments may be adapted for use with any of a variety of tubular structures, including drill pipe collars, casing sections, or the like. Additionally, certain embodiments relate to a subsea (e.g., offshore) drilling and production system; however, it should be understood that the disclosed embodiments may be adapted for use within an onshore (e.g., land-based) drilling and production system.
  • a subsea e.g., offshore drilling and production system
  • FIG. 1 is a schematic diagram of a portion of a drilling and production system with a smart block configurable for passive compensation, accordance to some embodiments.
  • the system 110 includes a derrick 112 supported by a floating platform 114 ( e.g., floating platform or vessel).
  • the system 110 includes a hoisting system 116 configured to raise and to lower drilling equipment relative to the drill floor 114.
  • the hoisting system 116 includes a crown block 118, a traveling block 120, a draw-works system 122, and a cable assembly 124 ( e.g., wire) that extends from the draw-works system 122 and couples the crown block 118 to the traveling block 120.
  • a cable assembly 124 e.g., wire
  • a top drive 126 is coupled to the traveling block 120, and a drill string 128 supporting a drill bit (not shown) is suspended from the top drive 126 and extends through the platform 114 into the wellbore through which drill string 128 is disposed.
  • the top drive 126 may be configured to rotate the drill string 128, and the hoisting system 116 may be configured to raise and to lower the top drive 126 and the drill string 128 relative to the platform 114 to facilitate drilling of the wellbore.
  • the hoisting system 116 in this case includes a smart block 140 that can be moved and "parked” and be fixed in relation to either the crown block 118 or the travelling block 120.
  • a smart block 140 that can be moved and "parked” and be fixed in relation to either the crown block 118 or the travelling block 120.
  • the '253 application describes a travelling block system where the operator may park a part of the travelling block to achieve a different reeving of drill lines, and thereby a different gearing of the hoisting system when running with lower loads. This will help the operator to achieve fast and effective operations with low loads in combination with safe operation of high loads without losing time.
  • the hoisting system 116 is further equipped with a compensation system configured to provide passive compensation by allowing movement between smart block 140 and crown block 118 so as to isolate the travelling block 120 from the motion of the platform 114, derrick 112, crown block structure 130 and crown block 118.
  • the passive compensation is configured by engaging passive compensating cylinders 150 and 152 between the crown block structure 130 and smart block 140.
  • the motion of the crown block structure 130 and smart block 140 during passive compensation is illustrated by the dashed arrows. Note that the relative motion of the crown block structure 130 and smart block 140 during passive compensation will be opposite to each other in order to reduce or eliminate motion imparted on traveling block 120, top drive 126 and drill string 128.
  • FIGs. 2A and 2B are schematic diagrams of a hoisting system having a smart block configurable for passive compensation, according to some embodiments.
  • the smart block in FIGs. 2A and 2B is shown configured to provide passive compensation.
  • the draw works 122 is shown with the fast line 218 leading to fast line sheave 220 which is fixed to the crown block structure 130 (shown in FIG. 1 ) and crown block 118.
  • FIGs. 2A and 2B are shown configured to provide passive compensation.
  • the smart block 140 is allowed to travel relative to the crown block 118 through the action of passive compensating cylinders 150 and 152.
  • the dashed arrows indicate the likely movement direction of the crown block 118 and smart block 140.
  • FIG. 2A shows the hoisting system configured for passive compensation and when the rig (i.e. the platform, derrick and crown block) is in a relatively high position or "rig high" position.
  • FIG. 2B shows the hoisting system configured for passive compensation and when the rig (i.e. the platform, derrick and crown block) is in a relatively low position or "rig low" position.
  • the position of the smart block 140, relative to the crown block 118 changes in order to compensate for position of the crown block 118 relative to the travelling block 120.
  • distance between the crown block 118 and travelling block 120 changes between the rig high ( FIG. 2A ) and rig low ( FIG. 2B ) positions such that h > h'.
  • a simple passive compensator function can be provided for operations in lock-to-bottom operations, according to some embodiments.
  • FIGs. 3A-3C are partial perspective views illustrating a hoisting system with a smart block configured for passive compensation, according to some embodiments.
  • FIG. 3A shows the hoisting system 116 configured for maximum load hoisting capability.
  • the smart block 140 is parked within the travelling block 120. In this case, there are 16 lines when combining the travelling block 120 and smart block 140.
  • FIG. 3B shows the hoisting system 116 configured for maximum speed (i.e. lowest load).
  • the smart block 140 is parked up next two crown block 118.
  • the smart block 140 is parked within dolly 340 which is also used in compensation mode (shown in FIG. 3C ).
  • FIG. 3A shows the hoisting system 116 configured for maximum load hoisting capability.
  • the smart block 140 is parked within the travelling block 120. In this case, there are 16 lines when combining the travelling block 120 and smart block 140.
  • FIG. 3B shows the hoisting system 116 configured for maximum speed (i.e. lowest load).
  • FIG. 3C shows hoisting system 116 configured for passive compensation.
  • the smart block 140 is parked within dolly 340, and dolly 340 is allowed to move with respect to crown block 118 (and crown block structure 130) using two cylinders 150 and 152.
  • the cylinders 150 and 152 can be fluid and/or gas filled and often connected to gas bottles 351 and 352 via an accumulator 353, thereby providing a gas spring.
  • Gas bottles 350 and 352 and other components such as accumulators 353, dampening mechanism, coil springs, and the like may also be used for providing damped compensating movement between crown block structure 130 and dolly 240.
  • FIGs. 4A-4B are partial perspective views illustrating further aspects of a hoisting system with a smart block configurable for passive compensation, according to some embodiments.
  • FIGs. 4A and 4B are show the hoisting system 116 configured for passive compensation.
  • the dashed arrows indicate the likely movement direction of the crown block 118 and crown block structure 130 (which move together) and of smart block 140.
  • FIG. 4A shows the system 116 in a "rig high" position, analogous to FIG. 2A
  • FIG. 4B shows the system 116 in a "rig low” position, analogous to FIG. 2B .
  • FIG. 5 is a partial perspective view illustrating further aspects of a hoisting system with a smart block configured for passive compensation, according to some embodiments.
  • FIG. 5 shows more clearly some of the components that may be included to add or retrofit an existing hoisting system with a smart block 140 for flexibility in hoisting capability, and including cylinders 150 and 152, dolly 340 and dolly guide rails 510 and 512 for passive compensation capability.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Claims (9)

  1. Hebesystem (116) zum Aufhängen eines Bohrstrangs (128) von einer/einem schwimmenden Bohrplattform (114) oder -schiff, wobei das Hebesystem (116) umfasst:
    einen auf einem Bohrturm (112) oder Mast montierten Kronenblock (118), wobei der Kronenblock (118) mehrere Kronenblockscheiben umfasst und in fester Beziehung zum Bohrturm (112) oder Mast steht;
    einen Flaschenzugblock (120), der eine Anzahl von Flaschenzugblockscheiben umfasst;
    eine zwischen dem Kronenblock (118) und den Flaschenzugblöcken (120) bewegbare Zwischenscheibenanordnung (140), die bewegbar mit dem Kronenblock (118) verbunden ist; und
    ein mit der Zwischenscheibenanordnung (140) verbundenes Ausgleichssystem (150, 152), das dazu ausgelegt ist, eine Bewegung zwischen der Zwischenscheibenanordnung (140) und dem Kronenblock (118) bereitzustellen, um eine Bewegung der/des schwimmenden Bohrplattform (114) oder -schiffs, wie etwa eine Seegangsbewegung, auszugleichen, dadurch gekennzeichnet, dass
    das Ausgleichssystem (150, 152) einen oder mehrere zwischen dem Kronenblock (118) und der Zwischenscheibenanordnung (140) angeordnete Ausgleichszylinder (150, 152) umfasst.
  2. System (116) gemäß Anspruch 1, wobei das Ausgleichssystem (150, 152) ferner einen oder mehrere Akkumulatoren (353) und Gasflaschen (350) umfasst.
  3. System (116) gemäß einem der vorhergehenden Ansprüche, wobei das Hebesystem (116) für eine erste Tragfähigkeit ausgelegt ist, wenn die Zwischenscheibenanordnung (140) mit dem Kronenblock (118) verbunden ist, und das Hebesystem (116) für eine zweite höhere Tragfähigkeit ausgelegt ist, wenn die Zwischenscheibenanordnung (140) mit dem Flaschenzugblock (120) verbunden ist.
  4. System (116) gemäß einem der vorhergehenden Ansprüche, wobei das Hebesystem (116) für eine erste Verfahrgeschwindigkeit ausgelegt ist, wenn die Zwischenscheibenanordnung (140) mit dem Kronenblock (118) verbunden ist, und für eine zweite niedrigere Verfahrgeschwindigkeit ausgelegt ist, wenn die Zwischenscheibenanordnung (140) mit dem Flaschenzugblock (120) verbunden ist.
  5. System (116) gemäß einem der vorhergehenden Ansprüche, wobei die Scheiben des Flaschenzugblocks (120) einen Zwischenraum umfassend angeordnet sind, der dazu bemessen ist, die eine oder mehreren Scheiben der Zwischenanordnung (140) aufzunehmen.
  6. Verfahren zum Ausgleichen einer Bewegung einer/eines schwimmenden Bohrplattform (114) oder -schiffs, die auf einen Bohrstrang (128) übertragen wird, der vermittels eines auf der/dem schwimmenden Bohrplattform (114) oder -schiff montierten Hebesystems (116) aufgehängt ist, das einen Kronenblock (118) und einen Flaschenzugblock (120) umfasst, wobei das Verfahren umfasst:
    Verbinden einer Zwischenscheibenanordnung (140) mit einer Kronenblocckonstruktion (130) in fester Beziehung zum Kronenblock (118) über ein Ausgleichssystem (150, 152);
    Ausgleichen einer Bewegung der/des schwimmenden Bohrplattform (114) oder -schiffs, wie etwa einer Seegangsbewegung, die auf den vermittels des Flaschenzugblocks (120) aufgehängten Bohrstrang (128) übertragen wird, wenigstens teilweise mit dem Ausgleichssystem (150, 152), indem eine Vertikalbewegung zwischen der Kronenblockkonstruktion (130) und der Zwischenscheibenanordnung (140) ermöglicht wird, dadurch gekennzeichnet, dass
    das Ausgleichssystem (150, 152) einen oder mehrere zwischen dem Kronenblock (118) und der Zwischenscheibenanordnung (140) angeordnete Ausgleichszylinder (150, 152) umfasst.
  7. Verfahren gemäß Anspruch 6, ferner umfassend:
    Bereitstellen einer ersten Tragfähigkeit durch Verbinden der Zwischenscheibenanordnung (140) mit der Kronenblockkonstruktion (130); und
    Bereitstellen einer zweiten höheren Tragfähigkeit durch Verbinden der Zwischenscheibenanordnung (140) mit dem Flaschenzugblock (120).
  8. Verfahren gemäß Anspruch 7, wobei die erste Tragfähigkeit einer ersten Verfahrgeschwindigkeit zugeordnet ist, die höher ist als eine der zweiten höheren Tragfähigkeit zugeordnete zweite Verfahrgeschwindigkeit.
  9. Verfahren gemäß Anspruch 6, wobei das Ausgleichssystem (150, 152) ferner einen oder mehrere Akkumulatoren (353) und Gasflaschen (350) umfasst.
EP20163969.7A 2019-03-18 2020-03-18 Kompensiertes hebesystem und verfahren Active EP3715580B1 (de)

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US201962820211P 2019-03-18 2019-03-18

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EP3715580B1 true EP3715580B1 (de) 2022-03-09

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK179700B1 (en) * 2017-02-17 2019-04-02 Maersk Drilling A/S DRILLING RIG HOISTING SYSTEM
CN111765223B (zh) * 2020-06-30 2023-08-15 中国舰船研究设计中心 一种轻质滑轮绳系传动系统
CN115653517A (zh) * 2022-11-04 2023-01-31 中交公路规划设计院有限公司 一种用于海洋工程勘察浮动平台的升沉补偿系统

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3653636A (en) * 1970-02-09 1972-04-04 Exxon Production Research Co Wave motion compensation system for suspending well equipment from a floating vessel
WO1992014028A2 (en) * 1991-02-06 1992-08-20 Parco Mast And Substructures, Inc. An improved crown block/traveling block system for a well drilling derrick
AU6372599A (en) * 1999-10-19 2001-04-30 Huisman Special Lifting Equipment B.V. Hoisting mechanism, with compensator installed in a hoisting cable system
CN203798596U (zh) * 2014-02-26 2014-08-27 宝鸡石油机械有限责任公司 用于钻柱升沉补偿系统的试验装置
NL2013680B1 (en) * 2014-10-24 2016-10-05 Itrec Bv Offshore drilling system, vessel and method.
DK179700B1 (en) * 2017-02-17 2019-04-02 Maersk Drilling A/S DRILLING RIG HOISTING SYSTEM
US11897738B2 (en) 2017-04-05 2024-02-13 Schlumberger Technology Corporation Hoisting system and method

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