公开(公告)号：US20240401416A1

公开(公告)日：2024-12-05

申请号：US18678087

申请日：2024-05-30

Applicant: Schlumberger Technology Corporation

Inventor： Erling Tambs ,  Harald Langenes

IPC: E21B15/02 ,  E21B19/00 ,  E21B19/09 ,  E21B19/24

Abstract: A drilling system includes a hull, an open cantilever mounted on the hull, a blowout preventer stack supported by the open cantilever, a plurality of beams installed horizontally and supported on the open cantilever, and a conductor tension unit cage including a conductor tension unit. The conductor tension unit cage is installed below the blowout preventer stack, and is supported by the plurality of beams. The conductor tension unit is configured to apply tension to a conductor pipe extending through the blowout preventer stack when the open cantilever is skidded out from the hull.

公开(公告)号：US20240344407A1

公开(公告)日：2024-10-17

申请号：US18682260

申请日：2022-08-02

Applicant: DeltaTek Oil Tools Limited

Inventor： Tristam Paul Horn ,  Stephen Edmund Bruce ,  Tyler Rhes Reynolds ,  David Michael Shand

IPC: E21B17/08 ,  E21B17/07 ,  E21B19/09

CPC classification number: E21B17/085 ,  E21B17/073 ,  E21B19/09

Abstract: An offshore method includes providing an elongate support string for extending between a mobile offshore drilling unit and a seabed location. The string has an upper portion and a lower portion, and an articulated joint is provided between the upper portion and the lower portion. The provision of the articulated joint maintains the lower portion of the elongate support string in a substantially vertical orientation and increases the safe operating radius of the mobile offshore drilling unit or increases the speed at which the unit may transit through the sea with objects suspended via the elongate support string.

公开(公告)号：US20240191584A1

公开(公告)日：2024-06-13

申请号：US18582314

申请日：2024-02-20

Applicant: Shane Triche ,  Heath Lawrence Triche

Inventor： Shane Triche ,  Heath Lawrence Triche

IPC: E21B19/07 ,  B66C1/44 ,  E21B19/089 ,  E21B19/09

CPC classification number: E21B19/07 ,  B66C1/44 ,  E21B19/089 ,  E21B19/09

Abstract: A compensating rig elevator is provided to eliminate set-down weight from threaded connectors during make-up of a pipe stand and thereby provide an ability to reduce the risk of thread galling and cross-threading. The elevator may comprise one or more hoist assemblies with bail arms that deflect as the compensating rig elevator is suspended by the bail arms and a tubular is placed in the compensating rig elevator. The bail arms actuate a locking mechanism to secure the compensating rig elevator in a closed position around the tubular. The compensating rig elevator can also have compensating rams and a slip system to positively engage the tubular and bear the weight of multiple tubulars.

公开(公告)号：US11962223B2

公开(公告)日：2024-04-16

申请号：US16954629

申请日：2018-12-21

Applicant: National Oilwell Varco Norway AS

Inventor： Yngvar Borøy ,  Anibal B. Teixeira ,  Geir Odd Bergstøl ,  Oddbjørn Øye

IPC: H02K7/00 ,  E21B19/00 ,  H02K7/02 ,  B63B35/44 ,  E21B19/09 ,  H02K7/09

CPC classification number: H02K7/025 ,  E21B19/006 ,  B63B35/4413 ,  E21B19/09 ,  F16C2361/55 ,  H02K7/09

Abstract: An apparatus for supporting a flywheel on a floating vessel includes a support for the flywheel; and a tilt sensor for measuring an angle of slope relative to the Earth, the tilt sensor being arranged to detect a change of an angle of slope of the floating vessel relative to the Earth. The apparatus further includes a driver for manoeuvring the support relative to the floating vessel, based on the measured angle of slope from the tilt sensor, wherein the driver is operable to manoeuvre the support so as to counteract a change of an angle of slope of the flywheel relative to the Earth due to the detected change of an angle of slope of the floating vessel.

公开(公告)号：US11927060B2

公开(公告)日：2024-03-12

申请号：US17925704

申请日：2021-05-21

Applicant: ITREC B.V.

Inventor： Diederick Bernardus Wijning

IPC: E21B19/02 ,  E21B19/09

CPC classification number: E21B19/09 ,  E21B19/02

Abstract: An offshore vessel for performing offshore subsea wellbore related activities, for example for drilling a subsea wellbore includes a drilling tower. A method for drilling a subsea wellbore includes using an offshore vessel and a method for tripping a tubulars string is disclosed. The offshore vessel is provided with a hoisting system which has a first configuration, wherein a hoisting cable is connected to a working deck and a second configuration wherein said hoisting cable is connected to a traveling block. The system allows for efficient tripping in and tripping out.

公开(公告)号：US11905768B2

公开(公告)日：2024-02-20

申请号：US16909792

申请日：2020-06-23

Applicant: CAJUN SERVICES UNLIMITED, LLC

Inventor： Shane Triche ,  Heath Triche

IPC: E21B19/07 ,  E21B19/089 ,  B66C1/44 ,  E21B19/09

CPC classification number: E21B19/07 ,  B66C1/44 ,  E21B19/089 ,  E21B19/09

Abstract: A compensating rig elevator is provided to eliminate set-down weight from threaded connectors during make-up of a pipe stand and thereby provide an ability to reduce the risk of thread galling and cross-threading. The elevator may comprise one or more hoist assemblies with bail arms that deflect as the compensating rig elevator is suspended by the bail arms and a tubular is placed in the compensating rig elevator. The bail arms actuate a locking mechanism to secure the compensating rig elevator in a closed position around the tubular. The compensating rig elevator can also have compensating rams and a slip system to positively engage the tubular and bear the weight of multiple tubulars.

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

IPC: E21B19/09 ,  E21B19/00 ,  B66D3/04

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.

公开(公告)号：US20200011141A1

公开(公告)日：2020-01-09

申请号：US16470051

申请日：2017-12-14

Applicant: ITREC B.V.

Inventor： Diederick Bernardus WIJNING ,  Joop ROODENBURG

IPC: E21B19/00 ,  E21B15/02 ,  E21B19/09 ,  E21B19/14 ,  E21B19/22

Abstract: An offshore subsea wellbore activities system and method wherein use is made of a tower and a motion arm assembly with vertical drive adapted to move the motion arm along a vertical motion arm rail relative to the tower. Also use is made of a wellbore activities device comprising a riser tension frame having an upper frame section, a lower frame section provided with a riser attachment device adapted to attach a riser to said lower frame section so as to extend in a firing line, and a vertical riser load bearing structure, e.g. formed by struts. The wellbore activities device further comprises a coiled tubing injector, a wireline lubricator, and one or more pressure control devices associated with the coiled tubing injector and/or the wireline lubricator received by and individually movable within the riser tension frame. The wellbore activities device provides a lateral firing line access passage allowing to transfer an elongated wellbore tool or a wellbore tubular in vertical orientation thereof by means of the motion arm assembly in a substantially lateral motion between and a remote position outside of the riser tension frame and an operative position within the riser tension frame and aligned with the firing line.

公开(公告)号：US10294737B2

公开(公告)日：2019-05-21

申请号：US15934673

申请日：2018-03-23

Applicant: Ensco International Incorporated

Inventor： Christopher Scott Stewart ,  Richard Robert Roper

IPC: E21B19/09 ,  E21B19/10 ,  E21B19/14 ,  E21B19/16 ,  E21B19/22 ,  E21B19/083

Abstract: A system, including one or more supports. The system also includes a movable platform slidingly coupled to the one or more supports and configured to be selectively moved towards a drill floor and away from the drill floor. The system further includes a roughneck disposed on the movable platform and configured to make up or break out a threaded joint between a first tubular segment and a second tubular segment, wherein the roughneck is configured to be selectively movable along the movable platform from a first position disposed adjacent to the one or more supports and a second position disposed adjacent to the first tubular segment and the second tubular segment.

公开(公告)号：US20190145185A1

公开(公告)日：2019-05-16

申请号：US16098873

申请日：2017-05-04

Applicant: MHWIRTH AS

Inventor： ATLE SLETTENE ,  TORD ASLAK ASLAKSEN

IPC: E21B15/02 ,  E21B19/00 ,  E21B19/02 ,  E21B19/084 ,  E21B19/086 ,  E21B19/09

Abstract: A hoisting system includes a hoisting cylinder assembly which is arranged vertically. The hoisting cylinder assembly includes at least one hoisting cylinder, a lower part, and an upper part, the upper part being moveable in relation to the lower part. At least one sheave is arranged in the upper part of the hoisting cylinder assembly. A winch which includes a base is fixed in relation to the lower part. A first wire is operatively connected to the winch and extends from the winch via the at least one sheave to a yoke so as to suspend the yoke from the at least one sheave.