US3919958A - Deep ocean mining ship - Google Patents

Deep ocean mining ship Download PDF

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Publication number
US3919958A
US3919958A US479092A US47909274A US3919958A US 3919958 A US3919958 A US 3919958A US 479092 A US479092 A US 479092A US 47909274 A US47909274 A US 47909274A US 3919958 A US3919958 A US 3919958A
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United States
Prior art keywords
gimbal
pipe
vessel
frame
well
Prior art date
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Expired - Lifetime
Application number
US479092A
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English (en)
Inventor
John R Graham
Robert C Crooke
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Global Marine Inc
Original Assignee
Global Marine Inc
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Filing date
Publication date
Application filed by Global Marine Inc filed Critical Global Marine Inc
Priority to US479092A priority Critical patent/US3919958A/en
Priority to FR7518555A priority patent/FR2274499A1/fr
Priority to JP50070969A priority patent/JPS5110590A/ja
Priority to DE2526611A priority patent/DE2526611C2/de
Application granted granted Critical
Publication of US3919958A publication Critical patent/US3919958A/en
Assigned to CHEMICAL BANK, A NY CORP. reassignment CHEMICAL BANK, A NY CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GLOBAL MARINE INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E21B19/15—Racking of rods in horizontal position; Handling between horizontal and vertical position
    • E21B19/155—Handling between horizontal and vertical position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • 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
    • E21B19/002—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
    • 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
    • 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
    • E21B19/143—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C50/00—Obtaining minerals from underwater, not otherwise provided for
    • E21C50/02—Obtaining minerals from underwater, not otherwise provided for dependent on the ship movements

Definitions

  • ABSTRACT A ship with special features for mining the ocean floor while operating in water depths in excess of 18,000 feet. These include first, a very large well in the center of the ship, passing through, but enclosed by the hull. The well is closable across the bottom by movable gates. Second, a pipe-handling system for moving large diameter mining pipe sections between the storage hold in the hull and the rig floor in the derrick where they are joined to or disconnected from the existing pipe string" from which the mining machine is supported. Third, the lift system which operates to raise or lower the pipe string on continuous feed basis.
  • the derrick, derrick pipe-handling equipment and entire lift system are motion compensated in roll, pitch and heave such that the derrick and suspended pipe string remain vertical with respect to the earth, isolated from the actual sea-induced motions of the ship.
  • the entire motion compensated system is sup ported over the center well by a large structural A- Frame.
  • This invention relates to a ship useful in deep ocean mining, and more particularly, motion compensated apparatus for raising and lowering heavy equipment such as mining machinery from a floating surface vessel to the ocean floor.
  • the present invention is directed to a surface ship which is capable of carrying a self-supporting system to a potentially productive mineral site and conducting mining operation once on station. Mining machinery can be lowered to, operated on, and retrieved from the ocean floor while the vessel holds position over the mineral site.
  • the present invention provides a means of carrying the mining machinery aboard the ship and lowering it to the ocean floor through a large opening in the hull of the ship, which can be closed from the sea by large movable gates.
  • the mining machinery is suspended from the ship by segmented pipe string, the sections of pipe being joined or removed as the machinery is lowered and raised. Minerals can be brought to the surface through this same pipe.
  • the pipe sections are stowed in a large hold in the hull of the ship beneath the main deck. From here they are moved one section at a time to the rig floor of the derrick and lifted into the derrick by special handling equipment. Each pipe section is lowered into position to be joined to the preceding section to form a pipe string attached to the mining machinery beneath the ship.
  • the support and vertical movement of the mining machinery and attached pipe string is accomplished through means of a lift system that is suspended on a gimballed platform. This platform also supports the derrick and derrick pipe-handling system. The entire gimballed system is supported on large vertically mounted cylinders.
  • the pipe string and mining machinery are isolated from the ships roll and pitch motion by the gimballing platforms and from the ships heave motion by the large supporting cylinders. This arrangment allows the pipe string and mining machinery to remain vertical with respect to the earth without transmitting the tension, torsional and bending loads, which are normally seen by a pipe string in the drilling industry.
  • the ship also features two large extendable legs, one at each end of the center well. These legs can be extended beneath the ship to lower and retrieve the mining vehicle and safely return it to the confines of the ship. Once inside the well, the gates can be closed and the water pumped out of the well thereby forming a self-contained dry dock for maintenance on the mining machinery.
  • FIG. 1 is a perspective view of the deep ocean mining ship of the present invention
  • FIG. 2 is a side elevational view of the ship
  • FIGS. 3A and 38 provide a partial cross-sectional view taken laterally through the vessel approximately amidships and looking forward of the vessel;
  • FIG. 4 is a cross-sectional view of the gimballed platform and lift system taken lengthwise through the center portion of the ship looking to the port side;
  • FIG. 5 is a cutaway perspective view of the heave compensation gimbal and lift system of the present invention.
  • FIGS. 1 and 2 show a perspective and side elevational view of a ship designed specifically for use in sub-sea mining operations.
  • the ship has a number of unique features, in addition to those normal and necessary for any ship such as propulsion, tonnage, crew accommodations, etc. These special features include mineral processing labs and storage, pipe storage, and a mining operations control room.
  • the ships hull indicated generally at 10, has a large center well 12 which can be closed to the sea by two large movable gates 23 and 25 on the bottom of the hull.
  • the gates are movable lengthwise of the vessel in suitable guides 27. Details of the gates and their operation are described in copend ing application entitled Closable Well in Hull of Deep Ocean Mining Vessel, U.S. Ser. No.
  • main deck 22 there are several unique features, which include a conveyor 21 for transferring sections of pipe from a pipe storage hold 17 to a derrick 18 positioned over the well 12.
  • the derrick l8 and associated derrick pipe handling system are mounted on a two-axis gimballed platform 20 consisting of an outer gimbal ring 58 and an inner gimbal frame 60.
  • a lift system 14 is suspended from the platform 20 and, as hereinafter described, grips the pipe string and operates to lower (or raise) the pipe string without interruption as sections of pipe are added to the string.
  • the heavy lift system is hydraulically operated as hereinafter described in more detail.
  • the gimballed platform is supported above the well 12 by an A-frame structure 16 that bridges the well.
  • a heave compensation system 26 also described in more detail below, transfers the load of the gimballed platform 20 with the derrick l8 and heavy lift system 14 to the A-frame structure, while permitting relative vertical movement between the ship and the gimballed platform.
  • the derrick and pipe handling system are described in detail in copending application entitled Automatic Roughneck, U.S. Ser. No. 478,930, filed June 13, 1974, and assigned to the same assignee as the present application.
  • the derrick and pipe-handling system operate to transfer a pipe, one section at a time, from the conveyor means and attach it to a vertical string of pipe extending down through the well 12 and attached to the mining machinery.
  • the final special feature is two large vertical structures 11 at either end of the center well. These structures, called docking legs, are used to hold the mining machine while stowed in the well ant to lower or raise the mining machine at the start or conclusion of mining operations.
  • the legs 11 can be raised or lowered by drive mechanism 13 and tilted fore and aft by tilt mechanism 15. Details of the docking legs are described in copending application entitled Apparatus for Raising and Lowering Large Objects From a Surface Vessel, U.S. Ser. No. 479,095, filed June 13, 1974, and assigned to the same assignee as the present application.
  • the center well 12 is flooded, the gates 23 and 25 are unlocked and opened, and the docking legs 11 lower the mining machine below the ship.
  • a section of pipe is moved from the storage hold 17 to the derrick 18 and, using the lift system 14, is lowered and joined to the mining machine.
  • the docking legs 11 release the mining machine, the gimbal platform 20 is unlocked, and the heave compensator 26 is placed at mid-stroke.
  • the derrick 18 and supported pipe string are now maintained vertical by gravity, essentially isolated from ships roll, pitch and h'eave motions.
  • the mining machine is lowered to the floor of the ocean with uninterrupted motion by adding successive lengths of pipe to the string.
  • the entire lift system 14, heave compensation system 26 and derrick 18 are supported over the center well 12 by the A- frame structure 16. Loads of the combined supported structure, suspended pipe and mining machine are transmitted to the hull 10 through four A-frame pedestals 24.
  • Two large vertically mounted cylinders or rams 50 and 52 are mounted on the A-frame lower chords 53 at the bottom and support the outer gimbal ring 58 through large yokes 46 and 48.
  • the outer gimbal ring rotates about the roll axis by means of two axially aligned shafts 54 and 56 journaled in bearings 61 and 63.
  • the yokes 46 and 48 ride in guides 38 and 40 as the heave compensating cylinders 50 and 52 respond to ships heave motions.
  • the guides 38 and 40 are mounted on and extend vertically above the A-frame lower chords 53, as seen in FIG. 4.
  • An inner gimbal frame 60 is attached to the outer gimbal ring 58 by two axially aligned shafts 62 anad 64 journaled in bearings 66 and 68. The inner gimbal frame 60 can thus rotate about the pitch axis of the ship.
  • a derrick sub-base 72 supports the derrick 18 on the frame 60.
  • a pair of upper lift cylinders 74 and 75 are also mounted on the gimbal frame 60.
  • a cage structure 80 Suspended from the under side of the inner gimbal frame 60 is a cage structure 80 which houses a lower pair of lift cylinders 84 and 85.
  • Hydraulic and electrical power are routed to the gimballed system, which is moving relative to the ship, by means of two tripods 96 and a series of hoses 95 and valves 94 and 98. Internal to the gimballed system, hard piping is used.
  • This lift system includes the pair of upper hydraulic cylinders 74 and mounted on the inner gimbal frame 60 on either side of the vertical centerline which corresponds to the centerline of the pipe string which is being raised or lowered.
  • the cylinders 74 and 75 operate piston rods 76 and 77 which extend downwardly and are coupled at their lower ends by a bridginig upper yoke assembly 78.
  • the upper yoke assembly 78 includes hydraulically operated means for releasable gripping the pipe string 90 at a pipe joint collar 92 so that hydraulic actuation of the upper cylinders 74 and 75 imparts vertical movement to the pipe string. Makeup of each new section of pipe to the existing string is always accomplished above the upper yoke 78.
  • the lower hydraulic cylinders 84 and 85 are positioned fore and aft of the vertical centerline, whereas the upper hydraulic cylinders 74 and 75 are located to starboard and port of the vertical centerline.
  • the lower cylinders 84 and 85 actuate piston rods 86 and 87 which are coupled at their lower ends by a bridging lower yoke assembly 88.
  • the lower yoke assembly 88 is also arranged to releasably grip the pipe string at a pipe joint.
  • hydraulic actuation of the lower cylinders 84 and 85 likewise is capable of imparting a lowering or raising motion to the pipe string.
  • the pipe string is indicated generally at 90.
  • the pipe string is made up of a plurality of detachable sections, each section having an internally threaded collar 92 at the upper end of the pipe section into which another pipe section can be stabbed and threaded into a locked position to join the sections together.
  • the collar 92 at the top of each section provides a shoulder 93 by means of which the load imposed by the pipe string can be transferred alternately to either the upper yoke 78 or lower yoke 88.
  • the upper cylinders 74 and 75 and lower cylinders 84 and 85 are alternately connected to the pipe string by means of the hydraulically-operated yokes 78 and 88 so that as one set of cylinders is in the process of either raising or lowering the pipe string. the other set of cylinders can be moved into position to receive the load and continue the raising and lowering operation.
  • the heave compensating system includes two hydraulic cylinders or rams 50 and 52 which are hydraulically connected, respectively, to the bottom ends of hydraulic-pneumatic accumulators 154 and 156.
  • a rise of hydraulic fluid in the bottom half of an accumulator compresses the gas in the top half of the accumulator.
  • the top ends of the accumulators in turn are pneumatically connected to a plurality of pressurized pneumatic tanks 166.
  • the number of tanks connected in parallel to the respective accumulators can be controlled by the operator to change the gas volume of the pneumatic system.
  • This arrangement provides a passive hydraulicpneumatic spring between the gimbal system and the A-frame structure. As the vessel heaves the two hydraulic rams transfer the load to the bridging frame structure.
  • the spring constant (the stiffness of the spring) can be varied by changing the volume of gas in the system.
  • the operator can adjust the midstroke position of the rams by increasing or decreasing the air pressure in the system, thereby changing the spring stiffness to keep the stroke within specified limits.
  • a mining ship for lowering, operating and raising subsea mining apparatus comprising a hull including a deck and having an opening extending vertically through the hull to provide access from the deck to the water below the hull, a frame mounted on the hull and bridging the opening, a two-axis gimbal system including an outer gimbal ring and an inner gimbal frame pivotally mounted on the outer gimbal ring, means pivotally mounting the outer gimbal ring on the bridging frame over the opening, and pipe lifting means mounted on the inner gimbal frame for raising and lowering mining apparatus through the opening, said means supporting the outer gimbal ring on the bridging frame including heave compensating means for controlling vertical movement of the gimbal system relative to the bridging frame in response to vertical movement of the ship.
  • Apparatus of claim 1 further including gate means for closing the well from the sea, and docking means for retrieving and stowing the mining apparatus within the well.
  • Apparatus of claim 1 further including a derrick mounted on top of the inner gimbal frame and tiltable therewith for moving pipe sections into and out of position to be lowered or raised as part of a connected string of pipe sections by the pipe lift means.
  • Apparatus of claim 4 further including a derrick mounted on top of the inner gimbal frame and tiltable therewith for moving pipe sections into and out of position to be lowered or raised as part of a connected string of pipe sections by the lifting means, the weight of the derrick not being sufficient to raise the center of gravity of the gimbal frame and lifting means above the gimbal axes.
  • gimbal support means mounted on the vessel, the gimbal support means including a platform tiltable relative to the vessel about two axes which permit the platform to remain substantially horizontal with rolling and pitching movement of the vessel, and lift means secured below the platform for imparting vertical movement to the equipment, the center of gravity of the platform and lift means being below said axes, said gimbal support means including means for continuously adjusting the vertical position of said platform relative to the vessel to compensate for heave motion of the vessel.
  • said epuipment includes a segmented string of pipe extending vertically through the center of the gimbal support means and through the lift means for raising and lowering said equipment.
  • Apparatus of claim 7 further including derrick means mounted on the platform above the lift means for moving pipe segments into and out of position to be added to or removed from said pipe string.
  • a deep ocean mining vessel for operation of mining machinery at great depths from the surface, the vessel comprising: a hull having a large open well in the center of the vessel extending laterally a major part of the beam of the hull and being longer in the fore-aft direction than laterally, a frame bridging the top of the well and anchored to the hull on either side thereof, a stable working platform, means supporting the platform, from said bridging frame above the well, the supporting means including a gimbal system providing tilt of the platform relative to the vessel about two perpendicular axes extending respectively longitudinally and laterally of the vessel, said means supporting the outer gimbal ring on the bridging frame including heave compensating means for controlling vertical movement of the gimbal system relative to the bridging frame in response to vertical movement of the ship, and means mounted on the platform and connected to the mining machinery through the well: for raising and lowering the mining machinery in the water beneath the vessel.
  • Apparatus of claim 9- further including movable gate means along the bottom of the vessel for opening and closing the bottom of the well, and means for pumping water out of the well, thereby providing a dry storage and maintenance facility within the hull for the mining machinery.
  • Apparatus of claim 9 further including two rigid structural support members, one on either end of the opening in the ship, adapted to releasably grip the mining machinery, and means for moving the support members vertically to move the mining machinery into and out of the bottom of the well when the gates are open.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
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US479092A 1974-06-13 1974-06-13 Deep ocean mining ship Expired - Lifetime US3919958A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US479092A US3919958A (en) 1974-06-13 1974-06-13 Deep ocean mining ship
FR7518555A FR2274499A1 (fr) 1974-06-13 1975-06-13 Navire d'exploitation miniere oceanique a grande profondeur
JP50070969A JPS5110590A (fr) 1974-06-13 1975-06-13
DE2526611A DE2526611C2 (de) 1974-06-13 1975-06-13 Abbauschiff

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US479092A US3919958A (en) 1974-06-13 1974-06-13 Deep ocean mining ship

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US3919958A true US3919958A (en) 1975-11-18

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JP (1) JPS5110590A (fr)
DE (1) DE2526611C2 (fr)
FR (1) FR2274499A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215950A (en) * 1977-04-23 1980-08-05 Brown Brothers & Company, Ltd. Tensioner device for offshore oil production and exploration platforms
US4226204A (en) * 1976-12-24 1980-10-07 Entreprise D'equipements Mecaniques Et Hydrauliques E.M.H. Off-shore mooring device for a large-sized floating body
US4591294A (en) * 1982-03-31 1986-05-27 Nis Engineering Limited Welding and laying pipelines
US4625673A (en) * 1984-02-13 1986-12-02 Novacorp International Consulting Ltd. Motion compensation means for a floating production system
WO1998032951A3 (fr) * 1997-01-28 1998-10-01 Wirth Co Kg Masch Bohr Procede et dispositif pour forer des sondages, notamment des sondages de recherche et d'extraction
WO1998026151A3 (fr) * 1996-12-10 1998-10-01 Wirth Co Kg Masch Bohr Procede et dispositif pour foncer des forages, en particulier des forages d'exploration et d'exploitation dans le fond de la mer
EP1103459A1 (fr) * 1999-11-24 2001-05-30 Mercur Slimhole Drilling and Intervention AS Arrangement pour la compensation des mouvements de levée et de marée
US6691784B1 (en) * 1999-08-31 2004-02-17 Kvaerner Oil & Gas A.S. Riser tensioning system
US20060196672A1 (en) * 2005-03-07 2006-09-07 Robichaux Dicky J Heave compensation system for hydraulic workover
WO2009102196A3 (fr) * 2008-02-15 2010-11-11 Itrec B.V. Navire de forage en mer
US8662000B2 (en) 2009-11-08 2014-03-04 Ssp Technologies, Inc. Stable offshore floating depot
US20140161569A1 (en) * 2011-04-26 2014-06-12 Ihc Holland Ie B.V Vessel comprising a moon pool and a hoisting arrangement and method of lowering items into the sea
AU2010273448B2 (en) * 2009-07-15 2014-09-04 My Technologies, L.L.C. Downhole intervention
CN106458303A (zh) * 2014-03-03 2017-02-22 伊特里克公司 用于立管柱处理的方法和海上钻探船
CN108049874A (zh) * 2017-12-28 2018-05-18 武汉船舶设计研究院有限公司 一种用于深海采矿工程的水面支持布放回收系统
CN108194086A (zh) * 2018-02-26 2018-06-22 黄诚 海洋开采船

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US3984990A (en) * 1975-06-09 1976-10-12 Regan Offshore International, Inc. Support means for a well riser or the like
JPS58149887A (ja) * 1982-02-26 1983-09-06 Mitsui Eng & Shipbuild Co Ltd 海洋構造物等における重量物及び同付属品の懸架支持並びに降下揚収装置
NO171305C (no) * 1987-05-04 1993-02-24 Abb Global Engineering As Ny Forankret roterende stoettestruktur med oppdrift for boring og vedlikehold av broenner med stive eller fleksible stigeroer for flytende produksjon, lagring og overfoering av olje og gass fra et fartoey til havs

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US3419090A (en) * 1966-07-18 1968-12-31 John G Carter Offshore drilling system
US3496898A (en) * 1968-05-15 1970-02-24 North American Rockwell Marine riser structure
US3523578A (en) * 1968-05-16 1970-08-11 Gray Tool Co Riser drilling system with controlled deflection gimbal joints
US3602175A (en) * 1969-07-02 1971-08-31 North American Rockwell Oil production vessel

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Publication number Priority date Publication date Assignee Title
US3543527A (en) * 1968-05-31 1970-12-01 Westinghouse Electric Corp Underwater mining method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419090A (en) * 1966-07-18 1968-12-31 John G Carter Offshore drilling system
US3496898A (en) * 1968-05-15 1970-02-24 North American Rockwell Marine riser structure
US3523578A (en) * 1968-05-16 1970-08-11 Gray Tool Co Riser drilling system with controlled deflection gimbal joints
US3602175A (en) * 1969-07-02 1971-08-31 North American Rockwell Oil production vessel

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4226204A (en) * 1976-12-24 1980-10-07 Entreprise D'equipements Mecaniques Et Hydrauliques E.M.H. Off-shore mooring device for a large-sized floating body
US4215950A (en) * 1977-04-23 1980-08-05 Brown Brothers & Company, Ltd. Tensioner device for offshore oil production and exploration platforms
US4591294A (en) * 1982-03-31 1986-05-27 Nis Engineering Limited Welding and laying pipelines
US4625673A (en) * 1984-02-13 1986-12-02 Novacorp International Consulting Ltd. Motion compensation means for a floating production system
WO1998026151A3 (fr) * 1996-12-10 1998-10-01 Wirth Co Kg Masch Bohr Procede et dispositif pour foncer des forages, en particulier des forages d'exploration et d'exploitation dans le fond de la mer
US6422324B1 (en) 1996-12-10 2002-07-23 Wirth Maschinen-Und Bohrgeratefabrik Gmbh Method and device for driving bore-holes, in the sea bed using a counterflush method
WO1998032951A3 (fr) * 1997-01-28 1998-10-01 Wirth Co Kg Masch Bohr Procede et dispositif pour forer des sondages, notamment des sondages de recherche et d'extraction
US6484820B1 (en) * 1997-01-28 2002-11-26 Wirth Maschinen-Und Bohrgeraete Fabrik Gmbh Method and device for driving bore-holes, especially in the sea bed, using a guide tip
US6691784B1 (en) * 1999-08-31 2004-02-17 Kvaerner Oil & Gas A.S. Riser tensioning system
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DE2526611C2 (de) 1985-02-21
DE2526611A1 (de) 1976-01-02
FR2274499B1 (fr) 1980-11-28
JPS5110590A (fr) 1976-01-28
FR2274499A1 (fr) 1976-01-09

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