US3834460A - Well-head assembly - Google Patents

Well-head assembly Download PDF

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Publication number
US3834460A
US3834460A US00318972A US31897272A US3834460A US 3834460 A US3834460 A US 3834460A US 00318972 A US00318972 A US 00318972A US 31897272 A US31897272 A US 31897272A US 3834460 A US3834460 A US 3834460A
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US
United States
Prior art keywords
unit
assembly
well
well assembly
chuck
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.)
Expired - Lifetime
Application number
US00318972A
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English (en)
Inventor
A Brun
A Jaffe
Panafieu P De
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.)
Total Compagnie Francaise des Petroles SA
Original Assignee
SUBSEA EQUIPMENT ASS Ltd
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.)
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Application filed by SUBSEA EQUIPMENT ASS Ltd filed Critical SUBSEA EQUIPMENT ASS Ltd
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Publication of US3834460A publication Critical patent/US3834460A/en
Assigned to COMPAGNIE FRANCAISE DES PETROLES reassignment COMPAGNIE FRANCAISE DES PETROLES ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SUBSEA EQUIPMENT ASSOCIATES LIMITED,
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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/04—Manipulators for underwater operations, e.g. temporarily connected to well heads

Definitions

  • the invention relates to a production well-head designed for oil-wells situated at great depth with the aim of facilitating its installation and the systematic checking and maintenance of all flow and pressure checking apparatus and all associated measuring and control fittings, the correct functioning of which is necessary to the working of the well.
  • the pressure and flow checking equipment of the submarine production well-head differs from that of a land well by the manner in which its fittings are installed and maintained.
  • the overall structure of a submarine well-head is at present substantially the same as that of an ordinary land well.
  • a well-head assembly suitable for a submarine oil-well, comprising a drilling-head having a chuck for suspension of production pipes including in addition to the production string and the pipe connected to the annular space, all channels for electric lines and hydraulic controls necessary for control of the valves and apparatus situated in the well; a first, combined, detachable unit including a first series of channels, electric lines and hydraulic controls to be connected to the set of production pipes, electric lines and hydraulic controls of the well, the said channels and lines of the first unit being adapted to be aligned with the production pipes and lines of the well for their simultaneous connection, and secondly, valves in the said channels which are externally controllable to close or open the said channels; a connector adapted to lock the said first unit onto the boring head; a second combined and detechable unit including all channels and lines for simultaneous connection to the first unit in the same manner as that in which the latter is connected to the boring head; and a production products collection channel passing through the second and the first
  • This combined structure overcomes the disadvantages resulting from difficulties in replacing faulty elements.
  • the first unit only contains valves, which are moreover rarely operated, defects can only arise in the second unit, the latter including all the control and checking fittings of all devices including safety fittings necessary to the proper working of the well.
  • the second unit is situated in the upper part of the well-head and is provided with at least one connector to connect it to the first unit, faulty materials can be changed simply by disconnecting the second unit from the first, after ensuring that the valves in the production channels have been closed, and raising the second unit to the surface.
  • a further object of the invention is a well-head of this type in which the said channels and lines of the second unit terminate in addition at a multiple connection device similar to the device for connection of the second and first units, the axes of the channels corresponding to the production pipes being in addition coincided with the axes of these pipes.
  • This well-head allows, whenever it is required, the direct control of the well by any vessel, mobile platform or other surface support, this control being effected not only by means of electric and hydraulic lines to transmit power and commands but also by the production channels. In particular it is possible to effect any cable work because of the alignment of the channels of the units and the wellpipes.
  • FIG. 1 shows a diagrammatic section of the boring head and means for attachment of a support structure
  • FIG. 2 is a diagrammatic view showing the first detachable unit after its connection to the piping head
  • FIG. 3 is a diagrammatic view of the first detachable unit showing two means for protection of the boring head and the unit after connection;
  • FIG. 4 shows a section along line IV-IV of FIG. 3;
  • FIG. 5 shows a diagrammatic view of the first detachable unit
  • FIG. 6 shows a diagram of the main circuits of the assembly formed by the first and second detachable units
  • FIG. 7 shows a diagrammatic elevation of the checking equipment forming an integral part of the second detachable unit
  • FIG. 8 shows a diagrammatic plan of the checking equipment of the second detachable unit.
  • FIG. 1 shows the boring head to which a first detachable unit is connected.
  • the suspension chuck 40 of the production string 41 and pipe 42 leading to the annular space is locked and sealed on drilling head 8 by seals 14, 43 and fastening means of any suitable type. It rests by any known device on piping 45, the latter itself resting on an internal shoulder of drill head 8. In the example shown, drill head 8 rests on a shoulder of intermediate pipe 46 in outer casing 25.
  • the base of the wellhead equipment consists essentially of a guide structure 13 which may, for example, include guide columns 13a.
  • Structure 13 can be attached to outer casing 25 in any manner. This structure does not form part of the invention and may be of any type.
  • drill head 8 is associated with a seal and support fitting 7 which is as seen more clearly in FIG. 1, locked onto piping 46 and locked laterally against outer casing 25 by a mechanism 7a.
  • This fitting is rigidly connected through flange 6 to a base consisting essentially of a horizontal plate I having a lateral rim 2 (FIG. 2), with an opening formed in it for passage of conduits connected to unions such as 3 and 4 and a horizontal bearing surface 5.
  • the seal and support fitting 7, surrounding drill head 8 in a rigid and tight manner, constitutes with the well an assembly which is tight to sea-water and well effluent.
  • This feature offers the advantage of being able to fit on surface any means facilitating the connection of detachable unit 9, the upper and lower extreme edges of which are indicated by broken lines and 16, respectively.
  • the tightness obtained by drill head 8, seal and support fitting'7 and surfaces 1, 2 and 5 permits the location of a service module submersible at atmospheric pressure inside which a team can carry on with the operation of connecting unit 9 to drill head 8, passages 23 and 24, FIG. 1, integral with unions 49 and 50 of unit 9 penetrating respectively into the inside of the production string 41 and the pipe 42 of the annular space.
  • submersible module could be guided by any means forming part of base 1 or even of bearing surface 5, or that the submersible module could include on its external surface pieces in the form of truncated cones or simple forks cooperating with columns 13a.
  • columns 13a pass through plate 1 in a region adjacent to its periphery.
  • the guide structures which enable the ends of columns l3a'to be introduced into the orifices provided in platform 1 may be of any type and have not been included in the drawings.
  • Guide cones rigidly attached to platform 1 could serve as a guide structure.
  • a mechanical connector 51 which locks unit 9 onto drill head 8 when the latter, suitably positioned to coincide the axes of unions 49 and S0 with the axes of conduits 41 and 42, is depressed for simultaneous insertion of unions 49 and 50 into the corresponding conduits.
  • This operation also causes the automatic connection of all other electrical or hydraulic lines represented diagrammatically by 52 and 53, FIG. 4, respectively.
  • Electrical lines 52 permit the checking of the bottom hole pressure metering apparatus and hydraulic lines 53 permit the control of the bottom hole safety valves.
  • unit 9 The precise alignment and positioning of unit 9 relative to the casing head and the chuck for suspension of the production piping are obtained by manual guiding, assisted by any appropriate means such as block and tackle, strainer, etc.
  • the chuck for suspension of the production piping has itself been positioned on completion of the well, using as a reference the guide means which have been used for boring.
  • outer casing 25 is associated with a support structure 13 and a guide structure 55.
  • a carrying tool guided by 55 comes to rest on the said support structure 13, impacts and forces clue to guiding and initial contact being transmitted to the resistant pipes of greater diameter.
  • the said carrying tool surrounds and supports unit 9, by means of a suspension controlled, for example, by hydraulic rams.
  • the final approach, the precise alignment and then the soft connection of unit 9 on drill head 8 can then be controlled, the alignment and orientation of the channels in unit 9 and the corresponding production pipes in the wells being obtained by any known means, such as guide cones and columns, bolts and positioning grooves.
  • the guide structure 55 can optionally include in its upper part a conical portion to serve as an auxiliary guide to the lower part of unit 9. It may have any desired form compatible with the loads to be supported and enables a second structure 56 rigidly connected to unit 9 to rest on permanent structure 13
  • the guide structure 55 of drill head 8 and structure 56 of unit 9 preferably consists of plates and angle-iron leaving a free passage for the controls of valves l7, l8 and 19 for opening or closing the channels formed in unit 9 and shown diagrammatically in FIG. 6. Shock-absorbing blocks between unit 9 and structure 56 deaden possible shocks on connection of the second unit.
  • connection of unit 9 and drill head 8 has been represented by rectangle 47.
  • valves 18 and 19 which open or close channels 23 and 24 connected to the production string 41 and pipe 42, a valve 17 has been provided which opens or closes the header conduit 21 connecting unit 9 with union 3. The latter is connected to the abovementioned channels by circuits of unit 22 which will be described below.
  • Each of the three valves 17 to 19 can be controlled by any control device, for example by means of a manipulator placed on a tool-holder or by means of the device which is used to bring unit 9 onto the boring head. These valves can be controlled manually, particularly when the unit shown in FIG. 2 is used with a service module submersible at atmospheric pressure.
  • unit 9 only contains simple, robust and reliable fittings which permit isolation of the well and can consequently be left in place for a very long period, so as to avoid any servicing during the lifetime of the well.
  • Detachable unit 22, FIG. 5, is connected to unit 9 in a manner similar to the connection of unit 9 to boring head 8 and has channels 56, 57 and 58, shown diagrammatically in FIG. 6, which are connected respectively to channels 21, 23 and 24 in unit 9 via connection portion 48.
  • a hydraulic connector 59, FIG. 5, locks units 9 and 22 together as unit 22, originally oriented in the position suitable for alignment of the axes of the abovementioned channels, is lowered onto unit 9 to simultaneously connect all the corresponding channels
  • a bolt and groove or positioning finger device ensures the positioning of unit 22.
  • connections 56 and 58 have been shown. It is, however, clear that the connections of the electrical and hydraulic lines corresponding to lines 52 and 53 of unit 9, FIG. 4, are effected simultaneously.
  • unit 22 can be considered as a production shaft similar to a conventional land production shaft but having neither the first master production valve nor valves 19 and 17 for isolation of the annular header space.
  • Channel 57 above production string 41 has a safety valve 68 with automatic or controlled closure, the controls being electrical or hydraulic.
  • a top valve 70 can be operated by a manipulator or an electric or hydraulic motor when it is required to carry out work in the well.
  • a column (not shown) which contains all the necessary channels and lines is connected onto the head 22a of unit 22, FIG. 5, by means of any appropriate connector, represented diagrammatically by bolt 60.
  • valve 70 closes again automatically, the internal pressure of the well and the action of a spring contributing to holding this valve closed.
  • Valve 54 which is normally held closed, can be controlled hydraulically to purge the annular space by means of branch 61 which opens out, through nozzle 63 downstream of the hydraulically controlled, adjustable nozzle 62, in collection channel 56.
  • Valve 26 enables the production evacuation into the collection channel 56 and from there into the header channel 21 to be controlled. Valve 26 is controlled hydraulically remotely or by any automatic safety device.
  • Unit 22 is also rigidly connected to hydraulic control units represented diagrammatically by their containers 30, 31 and 32, FIGS. 7 and 8, to a remote metering unit 33 and to an electrical distribution system 34, these various elements being incorporated in a protective structure 2212.
  • the arrangement of the containers permits access to the various valves in unit 22 to control or check them by means of an external manipulator.
  • the hydraulic units 30, 31, 32 contains the electric pumps and the electrodistributive devices which direct the hydraulic power to the selected valve or fitting.
  • the electrical distribution unit '34 consists of a tight container enabling the electrical assembly to be maintained at atmospheric pressure. This assembly controls the valves and fittings of the well-head.
  • Remote metering unit 33 enables the work and service parameters, such as well-head pressure, annular pressure, collection pressure, hydraulic system pressure and voltage and intensity of the control and power circuits to be measured and transmitted remotely. This unit similarly enables the position indication of each valve and temperatures to be transmitted.
  • FIG. 6 shows pressure transducers 64, 65 and 66 in channels 56, 57 and 58 and a temperature transducer 67 in channel 56.
  • the socalled measurement transmission circuits do not form part of the invention, these circuits have not been shown.
  • Unit 22 thus equipped can be connected by its upper end 22a to any multiple connection device of a tight column suspended from a surface support and particularly containing electric lines, remote-metering lines, hydraulic control lines and two strings of rods, one connected to the production channel 57, the other to the annular space channel 58.
  • the well can thus be placed at any moment under the direct control of an appropriate surface unit.
  • a guiding and protective structure 22b surrounds unit 22 and the various containers 30 to 34, is therefore provided for this purpose.
  • an underwater well assembly having a production pipe assembly for transporting the well output to the water surface, a chuck for suspension of said production pipe assembly having passages therethrough for electric lines and hydraulic lines to control apparatus within the well and a stationary support structure extending laterally from the well assembly, the improvement comprising;
  • a second unit removably attached to said first unit, said second unit having a plurality of passageways in alignment with those of said first unit,
  • control means in said second unit to control the valves in said second unit and to control said apparatus within said well
  • conduit means connecting said first unit to a transportation pipe to transport the well output to the water surface.
  • both first and second units have protective structures affixed thereto, both said protective structures bearing on said stationary support structure.
  • said protective structure comprises a plurality of generally flat plates attached to said first unit at equidistant points about its external surface, parallel to the longitudinal axis of said first unit, one end of said plates bearing on said stationary support surface.
  • the protective structure comprises a plurality of generally flat plates attached to said second unit at equidistant points about its external surface parallel to the longitudinal axis of said second unit, one end of said plates bearing on said stationary support surface.
  • control means is attached to the external surface of said second unit.
  • control means are surrounded by a protective structure attached to said second unit.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Paper (AREA)
  • Seal Device For Vehicle (AREA)
  • Bridges Or Land Bridges (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
US00318972A 1971-12-27 1972-12-27 Well-head assembly Expired - Lifetime US3834460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7146719A FR2165719B1 (enrdf_load_stackoverflow) 1971-12-27 1971-12-27

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US3834460A true US3834460A (en) 1974-09-10

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US00318972A Expired - Lifetime US3834460A (en) 1971-12-27 1972-12-27 Well-head assembly

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US (1) US3834460A (enrdf_load_stackoverflow)
JP (1) JPS5752475B2 (enrdf_load_stackoverflow)
AU (1) AU464346B2 (enrdf_load_stackoverflow)
CA (1) CA967875A (enrdf_load_stackoverflow)
FR (1) FR2165719B1 (enrdf_load_stackoverflow)
GB (1) GB1399028A (enrdf_load_stackoverflow)
IT (1) IT972759B (enrdf_load_stackoverflow)
NL (2) NL154298B (enrdf_load_stackoverflow)
NO (1) NO144178C (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262748A (en) * 1979-08-20 1981-04-21 Armco Inc. Remote multiple string well completion
US4387771A (en) * 1981-02-17 1983-06-14 Jones Darrell L Wellhead system for exploratory wells
WO1984000791A1 (en) * 1980-10-14 1984-03-01 Darrell Lee Jones Wellhead system for exploratory wells
US4651831A (en) * 1985-06-07 1987-03-24 Baugh Benton F Subsea tubing hanger with multiple vertical bores and concentric seals
FR2658972A1 (fr) * 1990-02-23 1991-08-30 Elf Aquitaine Dispositif de rechauffage de la colonne de production d'un puits et procede de mise en place des enroulements de rechauffage.
US5706893A (en) * 1994-03-04 1998-01-13 Fmc Corporation Tubing hanger
US6227301B1 (en) * 1996-06-27 2001-05-08 Expro North Sea Limited Christmas tree
US20060108120A1 (en) * 2004-11-22 2006-05-25 Energy Equipment Corporation Well production and multi-purpose intervention access hub
US20090025936A1 (en) * 2004-02-26 2009-01-29 Des Enhanced Recovery Limited Connection system for subsea flow interface equipment
US20090266542A1 (en) * 2006-09-13 2009-10-29 Cameron International Corporation Capillary injector
US20090294125A1 (en) * 2003-05-31 2009-12-03 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20100025034A1 (en) * 2006-12-18 2010-02-04 Cameron International Corporation Apparatus and method for processing fluids from a well
US20100044038A1 (en) * 2006-12-18 2010-02-25 Cameron International Corporation Apparatus and method for processing fluids from a well
US20100175868A1 (en) * 2009-01-13 2010-07-15 Halliburton Energy Services, Inc. Modular Electro-Hydraulic Controller for Well Tool
US20100175871A1 (en) * 2009-01-13 2010-07-15 Halliburton Energy Services, Inc. Multi-Position Hydraulic Actuator
US20100243259A1 (en) * 2009-03-25 2010-09-30 Halliburton Energy Services, Inc. Well Tool With Combined Actuation of Multiple Valves
US20120305258A1 (en) * 2011-06-06 2012-12-06 Benton Frederick Baugh Method for increasing subsea accumulator volume
CN105298427A (zh) * 2015-11-19 2016-02-03 中国石油集团西部钻探工程有限公司 机械式井口悬挂装置及自喷转机采一体化装置

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JPS52168912U (enrdf_load_stackoverflow) * 1976-06-16 1977-12-21
US6343654B1 (en) 1998-12-02 2002-02-05 Abb Vetco Gray, Inc. Electric power pack for subsea wellhead hydraulic tools

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US3516492A (en) * 1968-05-23 1970-06-23 Shell Oil Co Underwater wellhead connector
US3523579A (en) * 1968-11-15 1970-08-11 Acf Ind Inc Subsea wellhead valve system and collet connector mechanism therefor
US3545539A (en) * 1967-08-28 1970-12-08 Mobil Oil Corp Subsea satellite foundation unit and method for installing satellite body therewithin
US3550682A (en) * 1968-10-18 1970-12-29 Exxon Production Research Co Method and apparatus for making equipment connections at remote underwater locations and for producing fluids from underwater wells
US3693714A (en) * 1971-03-15 1972-09-26 Vetco Offshore Ind Inc Tubing hanger orienting apparatus and pressure energized sealing device
US3710859A (en) * 1970-05-27 1973-01-16 Vetco Offshore Ind Inc Apparatus for remotely connecting and disconnecting pipe lines to and from a submerged wellhead

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US3368618A (en) * 1963-10-03 1968-02-13 Hydril Co Conduit coupling with multiple fluid lines
US3339632A (en) * 1964-01-21 1967-09-05 Hydril Co Underwater connector
FR1567019A (enrdf_load_stackoverflow) * 1967-01-19 1969-05-16

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Publication number Priority date Publication date Assignee Title
US3545539A (en) * 1967-08-28 1970-12-08 Mobil Oil Corp Subsea satellite foundation unit and method for installing satellite body therewithin
US3516492A (en) * 1968-05-23 1970-06-23 Shell Oil Co Underwater wellhead connector
US3550682A (en) * 1968-10-18 1970-12-29 Exxon Production Research Co Method and apparatus for making equipment connections at remote underwater locations and for producing fluids from underwater wells
US3523579A (en) * 1968-11-15 1970-08-11 Acf Ind Inc Subsea wellhead valve system and collet connector mechanism therefor
US3710859A (en) * 1970-05-27 1973-01-16 Vetco Offshore Ind Inc Apparatus for remotely connecting and disconnecting pipe lines to and from a submerged wellhead
US3693714A (en) * 1971-03-15 1972-09-26 Vetco Offshore Ind Inc Tubing hanger orienting apparatus and pressure energized sealing device

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262748A (en) * 1979-08-20 1981-04-21 Armco Inc. Remote multiple string well completion
WO1984000791A1 (en) * 1980-10-14 1984-03-01 Darrell Lee Jones Wellhead system for exploratory wells
US4387771A (en) * 1981-02-17 1983-06-14 Jones Darrell L Wellhead system for exploratory wells
US4651831A (en) * 1985-06-07 1987-03-24 Baugh Benton F Subsea tubing hanger with multiple vertical bores and concentric seals
FR2658972A1 (fr) * 1990-02-23 1991-08-30 Elf Aquitaine Dispositif de rechauffage de la colonne de production d'un puits et procede de mise en place des enroulements de rechauffage.
US5706893A (en) * 1994-03-04 1998-01-13 Fmc Corporation Tubing hanger
US6227301B1 (en) * 1996-06-27 2001-05-08 Expro North Sea Limited Christmas tree
US10107069B2 (en) 2002-07-16 2018-10-23 Onesubsea Ip Uk Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US9556710B2 (en) 2002-07-16 2017-01-31 Onesubsea Ip Uk Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8746332B2 (en) 2002-07-16 2014-06-10 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8733436B2 (en) 2002-07-16 2014-05-27 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8469086B2 (en) 2002-07-16 2013-06-25 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8167049B2 (en) 2002-07-16 2012-05-01 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20110226483A1 (en) * 2002-07-16 2011-09-22 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8066067B2 (en) 2003-05-31 2011-11-29 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8573306B2 (en) 2003-05-31 2013-11-05 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090301727A1 (en) * 2003-05-31 2009-12-10 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090301728A1 (en) * 2003-05-31 2009-12-10 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8220535B2 (en) 2003-05-31 2012-07-17 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8091630B2 (en) 2003-05-31 2012-01-10 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090294132A1 (en) * 2003-05-31 2009-12-03 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8622138B2 (en) 2003-05-31 2014-01-07 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20100206547A1 (en) * 2003-05-31 2010-08-19 Cameron International Corporation Apparatus and Method for Recovering Fluids From a Well and/or Injecting Fluids Into a Well
US20100206576A1 (en) * 2003-05-31 2010-08-19 Cameron International Corporation Apparatus and Method for Recovering Fluids From a Well and/or Injecting Fluids Into a Well
US20100206546A1 (en) * 2003-05-31 2010-08-19 Cameron International Corporation Apparatus and Method for Recovering Fluids From a Well and/or Injecting Fluids Into a Well
US8122948B2 (en) 2003-05-31 2012-02-28 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8540018B2 (en) 2003-05-31 2013-09-24 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US7992633B2 (en) 2003-05-31 2011-08-09 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US7992643B2 (en) 2003-05-31 2011-08-09 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090294125A1 (en) * 2003-05-31 2009-12-03 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8272435B2 (en) 2003-05-31 2012-09-25 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8281864B2 (en) 2003-05-31 2012-10-09 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090025936A1 (en) * 2004-02-26 2009-01-29 Des Enhanced Recovery Limited Connection system for subsea flow interface equipment
US8066076B2 (en) * 2004-02-26 2011-11-29 Cameron Systems (Ireland) Limited Connection system for subsea flow interface equipment
US8776891B2 (en) 2004-02-26 2014-07-15 Cameron Systems (Ireland) Limited Connection system for subsea flow interface equipment
US9260944B2 (en) 2004-02-26 2016-02-16 Onesubsea Ip Uk Limited Connection system for subsea flow interface equipment
WO2006057995A3 (en) * 2004-11-22 2006-12-28 Energy Equipment Corp Well production and multi-purpose intervention access hub
US7219740B2 (en) * 2004-11-22 2007-05-22 Energy Equipment Corporation Well production and multi-purpose intervention access hub
US20060108120A1 (en) * 2004-11-22 2006-05-25 Energy Equipment Corporation Well production and multi-purpose intervention access hub
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CA967875A (en) 1975-05-20
NL154298B (nl) 1977-08-15
JPS5752475B2 (enrdf_load_stackoverflow) 1982-11-08
GB1399028A (en) 1975-06-25
AU5009872A (en) 1974-06-20
NL7703553A (nl) 1977-07-29
FR2165719B1 (enrdf_load_stackoverflow) 1974-08-30
AU464346B2 (en) 1975-08-21
DE2262260B2 (de) 1975-10-09
NO144178C (no) 1981-07-15
JPS5035002A (enrdf_load_stackoverflow) 1975-04-03
DE2262260A1 (de) 1973-06-28
NL7215424A (enrdf_load_stackoverflow) 1973-06-29
NO144178B (no) 1981-03-30
FR2165719A1 (enrdf_load_stackoverflow) 1973-08-10
IT972759B (it) 1974-05-31

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