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公开(公告)号：US20210363837A1
公开(公告)日：2021-11-25
申请号：US16962978
申请日：2019-01-17
Applicant: MAERSK DRILLING A/S
Inventor： Konstantin PUSKARSKIJ , Kristian HANSEN , Christian SCHMIDT
IPC: E21B19/00
Abstract: Well centre assembly for an offshore drilling rig and associated method. There is described a well centre assembly 10 for an offshore drilling rig. The well centre assembly 10 comprises a diverter assembly 16 and a movement control system 18. The movement control system 18 is operable between the diverter assembly 16 and a supporting structure 12 of the rig. In use, the movement control system 18 controls or permits relative movement between the diverter assembly 16 and the supporting structure 12. A connector such as a riser 34 connected to the diverter assembly 16 during deployment, while deployed or during retrieval of the riser 34 may experience external forces such as from tidal, wind and/or wave movement at a water surface 50, which may cause the positioning and/or orientation of the riser 34 to vary. The movement control system 18 may control the movement of the diverter assembly 16 so as to compensate for movement of the riser 34.
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公开(公告)号：US20210301601A1
公开(公告)日：2021-09-30
申请号：US16486656
申请日：2018-02-19
Applicant: MAERSK DRILLING A/S
Inventor： Jesper HOLCK
Abstract: A hoisting system for a drilling rig, which has a crown block for attaching to a derrick, the crown block comprising a plurality of sheaves; a travelling block suspended from the crown block via a hoisting cable, the travelling block comprising a plurality of sheaves and being connectable with a payload, the travelling block being arranged to move along a workpath; the hoisting system further comprising: a floating block comprising a plurality of sheaves reeved on the hoisting cable; wherein the floating block is configured to move between: a first arrangement in which the floating block is fixed relative to the crown block; and a second arrangement in which the floating block is fixed relative to the travelling block; wherein the hoisting system is arranged such that, when the floating block is in one of the first or second arrangement, the sheaves of the floating block overlap a sheave of the crown block or travelling block in a direction of the workpath.
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公开(公告)号：US20210238935A1
公开(公告)日：2021-08-05
申请号：US16972569
申请日：2019-06-06
Applicant: MAERSK DRILLING A/S
Inventor： Jesper HOLCK , Kristian E. HANSEN
Abstract: A method for mitigating the effects of cable wear in an active heave compensated hoisting system of an offshore vessel in a locked to bottom mode of operation is disclosed. The method comprises supporting an upper end of a string which is connected to a subsea well from a travelling block of the hoisting system, wherein the travelling block is suspended from a crown block via a cable. The method further comprises operating an active heave compensation system to control a drawworks of the hoisting system to pay in and out the cable to compensate for motion of the offshore vessel and maintain a target overpull in the string. The method further comprises adjusting a ballast system of the offshore vessel to vary the draft of the vessel, and controlling the drawworks in accordance with the variation in the draft of the vessel to cause a length of cable to slip through the hoisting system and maintain the target overpull in the string.
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公开(公告)号：US11075520B2
公开(公告)日：2021-07-27
申请号：US16782032
申请日：2020-02-04
Applicant: MAERSK DRILLING A/S
Inventor： John Røn Pedersen , Martin Speiermann
Abstract: A method for operating a microgrid electric power generation system includes delivering energy to an electric power bus at least partially from one or more kinetic generators electrically coupled to the electric power bus, controlling the one or more kinetic generators in response to a change in a load such that a magnitude of a voltage on the electric power bus remains within a predetermined voltage range, and controlling one or more combustion generators electrically coupled to the electric power bus based at least in part on an operating state of the one or more kinetic generators. The one or more kinetic generators are capable of (a) delivering energy stored therein to the electric power bus, and (b) storing energy in kinetic form.
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公开(公告)号：US20210054701A1
公开(公告)日：2021-02-25
申请号：US16979311
申请日：2019-03-11
Applicant: MAERSK DRILLING A/S
Inventor： Jesper HOLCK
Abstract: A robotic apparatus for performing drill floor operations comprises a support arrangement and at least one manipulator arm. The at least one manipulator arm is configured to carry an end effector configured to manipulate one or more of tubing, tools and/or equipment on a drill floor or pipe deck of an oil and gas rig in order to perform a given drill floor operation.
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Patent Agency Ranking
公开(公告)号：US10787877B2
公开(公告)日：2020-09-29
申请号：US15742671
申请日：2016-07-06
Applicant: Maersk Drilling A/S
Inventor： John Pedersen , Michal Bury , Kenneth Cameron Murphy
IPC: E21B33/035 , E21B33/038 , E21B33/064 , E21B34/16 , E21B47/06 , E21B33/06 , E21B41/04
Abstract: the present invention relates to a blowout preventer system comprising, a lower blowout preventer (BOP) stack comprising a number of hydraulic components, and a lower marine riser package (LMRP) comprising a first control pod and a second control pod adapted to provide, during use, redundant control of hydraulic components of the lower blowout preventer stack where the first and the second control pods are adapted to being connected, during use, to a surface control system and to be controlled, during use, by the surface control system, wherein the blowout preventer system further comprises at least one additional control pod connected to at least one additional surface control system and to be controlled, during use, by the additional surface control system. In this way, an improved blowout preventer system is provided.
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公开(公告)号：US10323467B2
公开(公告)日：2019-06-18
申请号：US14777325
申请日：2014-03-17
Applicant: Maersk Drilling A/S
Inventor： Michael Kannegaard , Allan McColl , Jesper Holck
Abstract: An offshore drilling rig comprising a drill deck, at least one primary well center and a diverter system arranged below the primary well center, a drilling support structure extending upwardly from the drill deck and above the primary well center and the other work center and a first and a second hoisting system supported by the drilling support structure and being adapted for raising or lowering a first and a second load carrier, respectively, and where the offshore drilling rig comprises a positioning system adapted for selectively positioning at least the first load carrier in at least a first or a second horizontal position different from the first horizontal position, where the first load carrier in the first horizontal position is positioned above the primary well center, and in the second horizontal position is positioned above the other work center.
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公开(公告)号：US10202808B2
公开(公告)日：2019-02-12
申请号：US15647362
申请日：2017-07-12
Applicant: Maersk Drilling A/S
Inventor： Michael Kannegaard , Allan McColl , Jesper Holck
Abstract: An offshore drilling rig includes a drill deck, at least one work center arranged in the drill deck; a diverter system operatively connectable at least to a riser extending towards the seafloor; a hoisting system adapted for raising or lowering tubular equipment through the work center; wherein the offshore drilling rig includes a first positioning system configured for positioning at least the work center and/or the diverter system and/or a riser tensioning system selectively at a first horizontal position and a second horizontal position, different from the first horizontal position; and wherein the hoisting system is operable to raise or lower tubular equipment through the work center when said work center is positioned at said first horizontal position.
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公开(公告)号：US20180320331A1
公开(公告)日：2018-11-08
申请号：US15771665
申请日：2016-10-31
Applicant: Maersk Drilling A/S
Inventor： Michael Kannegaard , John Anthony Gill , Jeanne Mia Lønstrup
CPC classification number: E02B17/021 , E02B2017/006 , E21B15/003 , E21B15/02 , E21B19/002
Abstract: The present invention relates in some embodiments to a bottom supported drilling unit having two drilling stations for independently drilling (or otherwise working on) two wells simultaneously from a cantilever.
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公开(公告)号：US20180034280A1
公开(公告)日：2018-02-01
申请号：US15552276
申请日：2016-02-22
Applicant: MAERSK DRILLING A/S
Inventor： John Røn Pedersen
Abstract: The present invention relates to power generation and distribution system suitable for use in a variety of applications such as Mobile Offshore Drilling Units and fixed offshore installations including various types of seaborne vessels, drilling rigs etc.
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