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WO2002018742A1 - Double mat de levage - Google Patents

Double mat de levage Download PDF

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Publication number
WO2002018742A1
WO2002018742A1 PCT/NL2001/000638 NL0100638W WO0218742A1 WO 2002018742 A1 WO2002018742 A1 WO 2002018742A1 NL 0100638 W NL0100638 W NL 0100638W WO 0218742 A1 WO0218742 A1 WO 0218742A1
Authority
WO
WIPO (PCT)
Prior art keywords
mast
drilling
drilling mast
drill string
piperacker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/NL2001/000638
Other languages
English (en)
Inventor
Joop Roodenburg
Adriaan Jan Roodenburg
Johannes Jozef Zwetsloot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huisman Equipment BV
Original Assignee
Huisman Special Lifting Equipment BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huisman Special Lifting Equipment BV filed Critical Huisman Special Lifting Equipment BV
Priority to GB0304375A priority Critical patent/GB2383812B/en
Priority to AU2001294375A priority patent/AU2001294375A1/en
Publication of WO2002018742A1 publication Critical patent/WO2002018742A1/fr
Priority to NO20030911A priority patent/NO327032B1/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
    • 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
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • 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
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • E21B19/146—Carousel systems, i.e. rotating rack systems

Definitions

  • the present invention relates to a drilling mast for a drilling vessel, for drilling in the ground, for example for oil or gas, by means of said drilling mast, which drilling mast at the top side is provided with first hoisting means in a first firing line, for manipulating a first object, such as a drill string, in the longitudinal direction of the mast, and with second hoisting means in a second firing line, for manipulating the position of a second object, such as a second drill string, in the longitudinal direction of the mast.
  • first hoisting means in a first firing line for manipulating a first object, such as a drill string, in the longitudinal direction of the mast
  • second hoisting means in a second firing line for manipulating the position of a second object, such as a second drill string, in the longitudinal direction of the mast.
  • Drilling from such a vessel is carried out with a drilling tool fixed on the end of a drill string.
  • Said drill string is composed of loose drill string elements.
  • Said drill string elements consist mainly of a piece of pipe which is provided on either side with fixing elements for connecting together adjacent pipes.
  • the drilling tool is guided in the direction of the seabed by means of the drill string.
  • a new drill string element is constantly added to the drill string at the top, so that the drilling tool can extend ever further in the direction of the seabed.
  • Assembling such a drill string takes a relatively long time, despite the fact that the drill string can move freely through the water.
  • Another factor is that the greater the depth to which drilling has to be carried out, the more time is needed for assembling the drill string and for moving the drilling tool in the direction of the seabed.
  • a drilling tool inevitably becomes blunt. That means that the drilling tool has to be replaced by a new, sharp tool.
  • the drill string In order to be able to raise the worn tool, the drill string has to be hoisted up in its entirety. During the hoisting operation the drill string is disassembled. This hoisting up of the drill string, including drilling tool, also takes a relatively long time.
  • first and second hoisting means available next to each other for the purpose of installing below them a first and a second drill " string respectively.
  • US Patent 6,085,851 discloses a drilling tower which has below it a first and second hoisting means above a first and second firing line respectively. The first and second hoisting means can be used simultaneously.
  • the drilling tower according to US Patent 6,085,851 is constructed as a lattice structure.
  • the mast is in the shape of a narrow high pyramid with the top cut off.
  • the hoisting means and the firing lines are inside this lattice structure, which means that the hoisting means and the firing lines are separated from the outside world by the lattice structure.
  • the hoisting means and the firing lines are therefore difficult to reach from the outside, which is a disadvantage.
  • a so-called set-back is used during the drilling process. This set-back is a temporary storage of drill string elements on a ship. During the assembly and the dismantling of a drill string, so-called multi-joints can be set in a set-back. Multi- joints are units of two or more drill string elements each, which can be held in storage in the vertical position in the set-back.
  • the drill string elements can be supplied in multi-joints to the firing line. Since the firing lines of the drilling mast according to US 6,085,851 are difficult to reach from the outside of the mast, the setbacks have to be placed in the lattice structure. In order to use the two firing lines simultaneously, two set-backs even have to be present in the lattice structure. That is a disadvantage, for the simple reason that little space is available in the lattice structure itself.
  • the drilling mast is in the form of a tube or sleeve with substantially hollow inside, for accommodating therein means, such as winches and cables, for manipulating the position of the first and the second hoisting means relative to the mast, in order in that way to make the first and the second firing line accessible from the outside of the drilling mast.
  • Each of the hoisting means on the drilling mast according to the invention will be connected to at least one winch for moving the hoisting means up and down relative to the mast.
  • the hoisting means can be connected to a heave compensation system.
  • the mast forms a tube with space on the inside
  • all the necessary control elements of the hoisting blocks can be accommodated in the mast itself. That means that the hydraulic lines, the motors, the winches, the cylinders for the heave compensation system and the like are all accommodated in the mast. A great deal of precious space is consequently kept free on deck of the ship.
  • the control elements of the hoisting blocks are accommodated in the mast itself, the outside of the mast is very easy to reach.
  • the accessibility of the mast is not restricted by a lattice structure, as in the case of US Patent 6,085,851 discussed above. Moreover, there are no cables, lines or other obstacles which restrict the accessibility.
  • the drilling mast according to the invention also has advantages during its production. It is possible to assemble and test a complete mast, provided with all the necessary parts. Only when the mast appears to be in order it is transported in its entirety to the ship on which the mast is to be placed. With drilling towers according to the prior art that is not possible.
  • the mast prefferably be of a substantially quadrangular design, the first and the second hoisting means being fixed on opposite sides of the mast.
  • first and a second set-back for the accommodation of elements, such as multi- joints, at least a first piperacker being provided beside the drilling mast, for moving elements from the first set-back to the first firing line, or vice versa, and a second piperacker being provided, for moving elements from the second set-back to the second firing line, or vice versa.
  • a third piperacker to be placed beside the drilling mast, for moving elements from the first set-back to the second firing line, or vice versa, and a fourth set-back, for moving elements from the second set-back to the first firing line, or vice versa.
  • piperackers can manipulate the drill string elements in the vertical position, in order to supply them to the mast or to permit them to be removed to the set-back. Making use of two rotating set-backs, each on one side of the drill mast, ensures that drill string elements can be supplied and removed both at the first and at the second hoisting means.
  • first and a second rotating set-back each provided with two piperackers, it can be ensured that drill string elements can be supplied from a single rotating set-back to both the first and the second hoisting means. Should one of the piperackers fail, this arrangement ensures that drill string elements can be supplied to and removed from the first and the second hoisting means at all times.
  • the invention further relates to a drilling mast which is provided with a setback, the set-back comprising a substantially vertically placed holder, which is provided so that it rotates about a substantially vertical rotary shaft, the holder being provided with pick-up elements, extending in a substantially horizontal direction, which pick-up elements are designed for suspending an element, such as a multi-joint, from them.
  • the set-back for the pick-up elements is in the form of fingerboards with a substantially closed inner core, on which outward projecting fingers are provided.
  • the setback can comprise a top fingerboard with substantially saddle-shaped openings, which are accessible from the outside of the fingerboard, in order to limit in two directions a part of an element, such as a multi-joint, suspended in the fingerboard.
  • the set-back can comprise a bottom fingerboard, in which openings are provided in order to accommodate an element, such as a multi-joint, in an enclosing manner in said openings.
  • the set-back it is possible here for the set-back to have a middle fingerboard with substantially straight openings, which are accessible from the outside, for guiding an element, such as a multi-joint, in the horizontal direction.
  • a facility for supplying a drill string element in the vertical position from the outside to the rotating set-back.
  • a drill string element In the hoisted state a drill string element is received by a substantially open holder of the middle fingerboard and the holder of the top fingerboard.
  • a drill string element can subsequently be moved downwards making use of the guide of these two open fingerboards.
  • a through opening which can limit the movement of a drill string element in the horizontal direction is provided in the bottom fingerboard.
  • a saddle-shaped construction is provided in the top fingerboard, in which construction a part of the drill string element can be received.
  • the saddle-shaped construction also ensures that the drill string element cannot move in the horizontal direction at the top side, under the force of gravity. In this way it is ensured by means of the top, bottom and middle fingerboard that a drill string element is held securely in the fingerboard, without use being made of moving locking parts.
  • the guided constructions are exchangeable, so that other elements, such as, for example, casings, can also be positioned.
  • the drill string elements that have been placed in the set-back are not subjected to collapsing loads. That means that relatively long drill string elements can be placed in the set-back according to the invention. Owing to the fact that the elements are suspended, they do not rest on the couplings placed at each end of a drill string. The storage in the set-back therefore ensures that said couplings cannot be damaged.
  • the piperacker it is advantageous for the piperacker to have a stationary, substantially vertical rotary shaft, on which two or more hinged arms are fixed, each provided on the ends with a gripping element for gripping an element such as a multi-joint, which hinged arms are movable from a folded-in position near the rotary shaft of the piperacker to a folded-out position at a distance from the rotary shaft, for manipulating a clamped drilling element relative to the rotary shaft of the piperacker by means of the folding-in or folding-out movement, characterized in that the gripping element of the bottom hinged arm is in the form of a clamping element for clamping a drilling element such as a multi-joint, and the bottom hinged arm is fitted on the rotary shaft in such a way that it is movable in the vertical direction, the gripping element on the top hinged arm being in the form of a guide element for guiding a drilling element along it in the vertical direction.
  • Piperackers are known in the prior art. However, it is possible with the piperacker according to the invention to move the drilling elements clamped in the piperacker over a relatively great distance in the vertical direction. Only the gripping element of the bottom hinged arm grips the outside of a drilling element. The gripping elements of the top arm are used only for guiding a drilling element. If the bottom hinged arm is subsequently moved in its entirety in the vertical direction relative to the axis of rotation, a clamped drilling element will follow the vertical movement of the hinged arm. This ensures that the elements can be moved over a great distance. This great vertical movement is not possible by means of the piperackers according to the prior art.
  • the piperacker prefferably be provided with a first drive for opening and closing the top hinged arm, a second drive for opening and closing a bottom hinged arm, and a third drive for moving the bottom hinged arm in the vertical direction along the rotary shaft.
  • the drilling mast it is possible for the drilling mast to be provided with a space or cab for accommodating the operator of the drilling mast, the space or cab for accommodating the operator(s) being accommodated in the open space in the mast. It is possible here for the space or the cab for accommodating the operator to be situated above the level of the deck on which the mast is mounted.
  • a storage area to be present at the underside of the mast, for accommodating equipment that is placed in position during the use of the drilling mast.
  • Figure 1 shows a side view of a drilling mast according to the present invention
  • Figure 2 shows a front view of a drilling mast according to Figure 1 ;
  • Figure 3 shows a top view of the drilling mast according to the invention, with set-backs beside it;
  • Figure 4 shows a front view of a set-back according to the invention, provided with fingerboards;
  • Figure 5 shows a piperacker according to the invention.
  • the drilling mast 1 is provided with first lifting means, indicated in their entirety by the reference numeral 2, by means of which lifting means a drill string can be assembled, in order to be able to drill in the seabed below the drilling vessel.
  • the lifting means 2 can also be used for other drilling operations, such as assembling, for example, a casing.
  • the drilling mast 1 is provided with a heave compensation system.
  • the heave compensation system can compensate for the movements that the ship makes relative to the seabed, as a result of wind, swell and the like.
  • the winches used for paying out or hauling in the hoisting cables required for the lifting means 2 are accommodated on the inside of the wall 3 of the tower 1. That means that said winches and other facilities do not have to be placed on board the ship, which gives a considerable space saving.
  • the means that are necessary for the heave compensation, such as, for example, cylinders, are also fitted in the drilling mast 1 itself.
  • the special feature of the drilling mast 1 according to the invention is that it comprises not only a first position for lifting means 2, but also a second position where the second lifting means 4 can be fitted.
  • the mast 1 according to the invention is designed in such a way that the mast is of a substantially square shape.
  • the first lifting means 2 and the second lifting means 4 are fixed back to back on the mast. That means that lifting means project on either side of the mast.
  • the winches of both the first lifting means 2 and the second lifting means 4 in the mast 1 have to be kept clear for each of the masts, for maintenance and the like. That means that less optimum use can be made of the space in two free-standing masts than is the case according to the present invention, where one large mast is used, so that the space can be arranged very efficiently.
  • a further advantage of the mast according to the invention is that the mast can be assembled and tested in its entirety. The mast can then be taken ready for use to the place where it is to be used, and placed on a vessel.
  • a so-called piperacker 50 is shown beside the mast 1. The functioning of this piperacker 50 will be explained in greater detail with reference to Figure 5.
  • FIG. 1 shows a front view of the drilling mast 1 according to Figure 1. It can be seen in Figure 2 that a set-back 20 has been placed on either side beside the drilling mast 1. The set-back 20 is used in the drilling process for temporary storage of a drill string to be assembled.
  • Drill string elements are normally accommodated in a horizontal position on the deck of a vessel. If three of these drill string elements are fixed together, a so-called triple joint is obtained.
  • triple joints can be supplied from the set-back 20 to a drill string to be assembled. That means that the drill string can be assembled relatively quickly.
  • the drill string elements can be supplied to the set-back in parts of three drill string elements, or so-called multi-joints, in each case. It is clear that the set-back can also be designed in such a way that parts consisting of. four drill string elements can be accommodated in the set-back.
  • the triple joints are indicated in Figure 2 by reference numeral 60.
  • the set-back 20 comprises a top fingerboard 22, a middle fingerboard 23, and a bottom fingerboard 24. The shape and function of these parts is explained in greater detail with reference to Figure 4.
  • Figure 3 shows a top view of the drill mast 1 according to the present invention.
  • a set-back 20 has been placed on either side of the drilling mast 1.
  • four piperackers 50 have been placed around the mast 1.
  • elements can be supplied from the work places 31 and 32 respectively to the set-back 20.
  • components can be supplied from the set-back 20 to the respective work places 31 and 32.
  • the work places 31 and 32 are situated directly below the first and second lifting means of the drilling mast 1. Owing to the fact that the set-back 20 is designed as a rotating set-back, the position at which the piperacker 50 has to pick up or deliver an element is always the same. That means that the piperacker can also be placed in a stationary position on board a ship.
  • the piperacker 50 has a stationary rotary shaft 51, about which said piperacker can rotate relative to the deck of the ship.
  • Conventional piperackers are fixed on a rail, because they have to interact with a set-back in which the position of the drill string parts to be picked up or delivered will always change.
  • the construction of the mast and the interacting piperackers is such that should one of the piperackers 50 fail, the respective work places 31 and 32 are still accessible by means of the other piperackers.
  • the piperackers that are still functioning can remove and supply drill string elements by taking the latter by means of a first piperacker to a first set-back and taking the set-back to the second piperacker, by means of the third piperacker to the fourth piperacker, and by way of the last piperacker again to the next set-back.
  • FIG. 4 A possible embodiment of the rotary set-back 20 according to the invention is shown in Figure 4.
  • the top fingerboard 22 will be designed with saddle-shaped openings 40, which are accessible from the outside.
  • a projecting part of a drill string element can be pushed into the fingerboard from the outside. The moment this projecting part is moved downwards it will become wedged under its own weight in the saddle-shaped opening 40 of the fingerboard 22.
  • the fingerboard 23 in the centre of the set-back 20 is provided with open grooves. That means that the fingerboard 23 will guide an element to be placed in the set-back.
  • the bottom fingerboard 24 is designed with through holes.
  • a drill string element is received in the respective holes 40 and 41 and is then moved downwards, the underside of an element is received in the through hole 42.
  • a drill string element can be placed in the set-back with the aid of the respective holes 40, 41 and 42, without loose fixing elements being necessary for fixing such an element in the set-back.
  • a piperacker according to the invention is illustrated in Figure 5.
  • Said piperacker rotates about a central rotary shaft 51.
  • a top hinged arm 52 and a bottom hinged arm 53 are fixed on the piperacker 50.
  • Said hinged arms can move a clamped drill string element 60 relative to the rotary shaft 51 of the piperacker 50.
  • the top hinged arm 52 can be powered by means of a motor 54.
  • the swinging movement of the bottom hinged arm 53 can be powered in a corresponding way by means of a motor 55.
  • the bottom hinged arm 53 also has a second motor 56, in order to make the hinged arm 53 move in its entirety in the vertical direction relative to the piperacker
  • the bottom hinged arm 53 is shown in its top position by dashed lines in Figure 5.
  • the bottom hinged arm 53 is provided with a gripping claw 57.
  • the top hinged arm 52 is provided with a guide claw 58.

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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)

Abstract

L'invention concerne un mât de forage qui est destiné à un engin de forage flottant et qui comporte, sur son côté supérieur, un premier moyen de levage (2) situé dans une première ligne de pose de tubes et servant à manipuler un premier objet, par exemple une tige de forage, dans la direction longitudinale du mât, ainsi qu'un deuxième moyen de levage (4), situé dans une deuxième ligne de pose de tubes et servant à manipuler un deuxième objet, par exemple une deuxième tige de forage, dans la direction longitudinale du mât. Le mât se présente sous la forme d'un tube ou d'une gaine, sensiblement creux/creuse, permettant de loger des moyens tels que des treuils et des câbles qui servent à modifier la position d'un premier (2) et d'un deuxième moyen de levage (4) par rapport au mât, de façon à permettre d'avoir accès à la première et à la deuxième ligne de pose de tubes depuis l'extérieur du mât de forage. Ce dernier peut présenter plusieurs éléments de stockage de tiges vertical (20), râteliers à tiges creuses (22, 23, 24) et supports de tubes (50).
PCT/NL2001/000638 2000-08-30 2001-08-30 Double mat de levage Ceased WO2002018742A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0304375A GB2383812B (en) 2000-08-30 2001-08-30 Dual hoist mast
AU2001294375A AU2001294375A1 (en) 2000-08-30 2001-08-30 Double hoist mast
NO20030911A NO327032B1 (no) 2000-08-30 2003-02-27 Boremast

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1016051A NL1016051C2 (nl) 2000-08-30 2000-08-30 Dubbel uitgevoerde mast.
NL1016051 2000-08-30

Publications (1)

Publication Number Publication Date
WO2002018742A1 true WO2002018742A1 (fr) 2002-03-07

Family

ID=19771980

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2001/000638 Ceased WO2002018742A1 (fr) 2000-08-30 2001-08-30 Double mat de levage

Country Status (5)

Country Link
AU (1) AU2001294375A1 (fr)
GB (1) GB2383812B (fr)
NL (1) NL1016051C2 (fr)
NO (1) NO327032B1 (fr)
WO (1) WO2002018742A1 (fr)

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WO2009048319A2 (fr) 2007-10-10 2009-04-16 Itrec B.V. Installation d'un matériel tubulaire expansible dans un puits de forage sous-marin
WO2009102197A2 (fr) 2008-02-15 2009-08-20 Itrec B.V. Navire de forage en mer
WO2010126357A1 (fr) * 2009-04-29 2010-11-04 Itrec B.V. Système de stockage et de manipulation de matériels tubulaires
WO2011034422A2 (fr) 2009-09-18 2011-03-24 Itrec B.V. Dispositif de levage
DE102009043081A1 (de) * 2009-09-25 2011-03-31 Max Streicher Gmbh & Co. Kg Aa Bohranlage, Bohrmast, Bohrstangenspeichervorrichtung und Verfahren zum Errichten des Bohrmastes
NL2003964C2 (en) * 2009-12-16 2011-06-20 Itrec Bv A drilling installation.
CN102733766A (zh) * 2012-06-18 2012-10-17 杭州电子科技大学 一种与深海钻机配套的自动接杆保压取样装置及使用方法
WO2012148284A1 (fr) * 2011-04-29 2012-11-01 Seabed Rig As Bras auxiliaire pour équipement de forage
US8425171B2 (en) 2008-01-31 2013-04-23 Keppel Offshore & Marine Technology Centre Pte Ltd. Pipe handling system and method
CN103075108A (zh) * 2012-12-27 2013-05-01 三一重工股份有限公司 桅杆及旋挖钻机
US20130284450A1 (en) * 2010-12-23 2013-10-31 Itrec B.V. Drilling installation and offshore drilling vessel with drilling installation
US8739902B2 (en) 2012-08-07 2014-06-03 Dura Drilling, Inc. High-speed triple string drilling system
WO2014108541A3 (fr) * 2013-01-11 2014-11-06 A. P. Møller - Mærsk A/S Plateforme de forage
WO2014182160A2 (fr) 2013-05-06 2014-11-13 Itrec B.V. Système de forage de puits de forage
GB2526008A (en) * 2013-01-11 2015-11-11 Maersk Drilling As Drilling rig
EP2702226A4 (fr) * 2011-04-29 2015-12-09 Robotic Drilling Systems As Dispositif de manipulation de tuyau
US9341029B2 (en) * 2012-10-22 2016-05-17 Itrec B.V. Vessel including a drilling installation, and a method of drilling a well using the same
US9458680B2 (en) 2013-01-11 2016-10-04 Maersk Drilling A/S Drilling rig
US9732565B2 (en) 2014-03-03 2017-08-15 Itrec B.V. Method for riser string handling and an offshore drilling vessel
US20180087331A1 (en) * 2015-11-16 2018-03-29 Schlumberger Technology Corporation Tubular delivery arm for a drilling rig
US10465455B2 (en) 2015-11-16 2019-11-05 Schlumberger Technology Corporation Automated tubular racking system
US10519727B2 (en) 2015-11-17 2019-12-31 Schlumberger Technology Corporation High trip rate drilling rig
US10597954B2 (en) 2017-10-10 2020-03-24 Schlumberger Technology Corporation Sequencing for pipe handling
KR102160590B1 (ko) * 2020-05-11 2020-09-28 (주)씨앤에스아이 하이드라래커 암 제어 시스템 및 방법
US10844674B2 (en) 2016-04-29 2020-11-24 Schlumberger Technology Corporation High trip rate drilling rig
US10927603B2 (en) 2016-04-29 2021-02-23 Schlumberger Technology Corporation High trip rate drilling rig
US11118414B2 (en) 2016-04-29 2021-09-14 Schlumberger Technology Corporation Tubular delivery arm for a drilling rig

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US11566478B2 (en) 2019-08-29 2023-01-31 Ensco International Incorporated Compensated drill floor

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NL1016051C2 (nl) 2002-03-01
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NO20030911L (no) 2003-04-30
NO20030911D0 (no) 2003-02-27
GB2383812A (en) 2003-07-09
GB0304375D0 (en) 2003-04-02
NO327032B1 (no) 2009-04-06

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