EP0897455B1 - Socle de support de manifold pour installation d'exploitation petroliere et procede de pose de l'installation - Google Patents

Socle de support de manifold pour installation d'exploitation petroliere et procede de pose de l'installation Download PDF

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Publication number
EP0897455B1
EP0897455B1 EP97921916A EP97921916A EP0897455B1 EP 0897455 B1 EP0897455 B1 EP 0897455B1 EP 97921916 A EP97921916 A EP 97921916A EP 97921916 A EP97921916 A EP 97921916A EP 0897455 B1 EP0897455 B1 EP 0897455B1
Authority
EP
European Patent Office
Prior art keywords
mounting plate
manifold
installation
flexible pipe
section
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
EP97921916A
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German (de)
English (en)
French (fr)
Other versions
EP0897455A1 (fr
Inventor
Hervé Jean Albert Marcel VALLA
Pierre Henri Vasseur
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.)
Technip France SAS
Original Assignee
Coflexip SA
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 Coflexip SA filed Critical Coflexip SA
Publication of EP0897455A1 publication Critical patent/EP0897455A1/fr
Application granted granted Critical
Publication of EP0897455B1 publication Critical patent/EP0897455B1/fr
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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • E21B43/0107—Connecting of flow lines to offshore structures

Definitions

  • the present invention relates to petroleum exploitation off-shore, and more particularly an operating installation petroleum using flexible pipes for the transport of pressurized fluids such as hydrocarbons from overheads subsea wells.
  • the pipes used for the transport of hydrocarbons can clog and clog up after training a deposit on the internal surface of the pipes, which happens frequently when oil has a high level of paraffin.
  • conduits also called “pigging”, by exerting an action mechanical on the internal surface of the pipes.
  • connection manifolds for establishing a tight connection between short length and small diameter pipes from wellheads and large flexible pipe sections length and larger diameter used for transportation to the surface on pedestals resting on the seabed.
  • These bases can also support the valves allowing to isolate the well heads and to communicate the different sections of flexible pipe together to form the loop necessary for the cleaning operation.
  • the U-shaped connector is isolated by a valve when the exploitation of wells so that the hydrocarbons produced by each wellhead traverses two sections of pipe separate flexible up to the surface operating installation; to carry out the cleaning, each well head is isolated and connects the two sections of flexible pipe through the connector in U, which makes it possible to constitute a loop allowing the passage, in the two flexible pipe sections, a cleaning.
  • a second solution would consist in placing on the bottom the bases and perform in situ connection of pipes flexible on manifolds.
  • the object of the invention is in particular to make the installation of an oil exploitation installation comprising manifold support bases connected to pipe sections flexible.
  • the installation oil exploitation has two bases resting on the bottom submarine, each base supporting a manifold connected to two ends with two end pieces of flexible pipe sections respective, fixed to the manifold substantially in the extension one on the other, each manifold further comprising a flange for the tight connection to a pipe coming from a structure underwater such as an underwater wellhead, manifolds of two bases being connected together at one end by a section of flexible pipe and connected at the other end, by sections of respective flexible pipe, to an operating installation in area.
  • end caps of sections of flexible pipe are attached to the manifold substantially in the extension of each other when the flexible pipe sections leave the base on which said manifold is fixed in substantially opposite directions.
  • Installation on the seabed of the installation can then be carried out without it being necessary to manage the simultaneous launching of two pipes flexible, because it is possible thanks to the invention to start with to put in the water a first section of flexible pipe, to put then with water a first base, then a second section of pipe flexible, a second base and finally a third section of pipe flexible.
  • the portions of the flexible pipes close to the end caps attached to the manifold can each slide in a curvature limiting member integral with said basement.
  • said curvature limiting member is constituted by a set of vertebrae fixed at one end to said base and inside which can slide said flexible pipe portion close to the end piece terminal attached to the manifold.
  • said manifolds each have a shape general of T, said pipe connection flange coming from of the associated underwater structure being carried by the branch central T.
  • one of the two bases supports a valve used to communicate or isolate the manifolds located on the two bases.
  • the installation comprises a network of remote control lines for underwater organs such as valves, consisting of umbilical-type pipes, this network comprising a first umbilical connecting the surface operating installation to a first base and a second umbilical connecting the first base to second base.
  • each base takes place while the base is connected by two cables to the vessel laying, a first cable being attached to the rear of the base and a second cable being attached to a rigid gantry articulated on the base, only the cable connected to the rear of the base used to support the base first of the descent, the tension in this cable being released when the base reaches a certain depth, the cable attached to the gantry then used to bring the base in a substantially horizontal position and then to hold it until its poses on the seabed.
  • the gantry is detachably fixed to the base so that it can be recovered after the installation of a base and be used to install the next base.
  • the gantry comprises at least one member rotary actuator to be operated by a robot manipulator, this rotary actuator being connected by a transmission to a mechanism capable of transforming the rotation of said organ in an unlocking movement of a hook for fixing the gantry on the base.
  • connection between the subsea wellhead and the connection flange of the manifold carried by the base by means of a rigid pipe made tailor-made after an in situ observation of the orientations of said connection flange and a second connection flange provided on the wellhead and their relative position.
  • This new base is intended to rest on the bottom submarine and supports a manifold to establish a connection watertight between a pipe coming from an underwater structure such that an underwater wellhead and at least a terminal portion of at least minus one section of flexible pipe, the manifold comprising a connection flange to said pipe and the base and / or the manifold comprising means for orienting the axis of the flange of connection in a chosen direction before establishing the connection with said pipe when the base rests on the bottom submarine.
  • Such a base facilitates the laying of a pipe between the manifold provided on the base and the wellhead, insofar as it is no longer necessary to tailor a pipe and such base also makes it possible to install the installation on a background submarine with significant elevations while using pipes fitted with fittings comprising a locking member can come into locking position by the effect of gravity, in which case said aforementioned chosen direction corresponds to the vertical, with an angular tolerance less than or equal to 10 ° and preferably less than or equal to 5 °.
  • the base includes a fixed frame intended to rest on the seabed and a tray orientable relative to the frame and on which said manifold is fixed.
  • said plate is connected audit built by a cardan-type joint.
  • the base includes means allowing to orient and maintain in the chosen position said flange of connection.
  • the base further comprises means allowing the removable fixing on the base of a gantry used for installing and / or recovering the base.
  • FIG. 1 There is shown schematically in Figure 1 a installation 1 in accordance with a particular embodiment of the invention.
  • This installation 1 is intended for the operation of two 2.3 subsea oil well heads by a surface vessel 4 such as a dynamically positioned vessel.
  • the difference in depth between the submarine well 2 and the submarine well 3 is of the order of 150 m, the average slope between the two wells being of the order of 7 °.
  • Installation 1 comprises a first pipe section 5 flexible to connect the vessel 4 to a manifold 10 supported by a first base 6, this manifold used to connect the head of submarine well 2 in said first section of flexible pipe 5.
  • a second flexible pipe section 7 connects the manifold 10 to a second manifold 10 'located on a second base 8.
  • a third flexible pipe section 9 connects the manifold 10 'located on the second base 8 and the ship 4.
  • the flexible pipe sections 5,7 and 9 present in the example of embodiment describes an internal diameter of 6 "and are of "flow line” type.
  • Each manifold 10, 10 ' has a T-connector, which fitting carrying on its central branch a flange 11 for the tight connection to a pipe 12 coming from the wellhead 2, 3 associated with the base considered and constituted in the example described by a flexible pipe with an internal diameter of 10.2cm (4 "), this pipe 12 still being called "jumper".
  • Each T-connector is provided on its branch carrying the flange 11 of a valve 13 making it possible to isolate the pipe 12 for a cleaning operation of the pipe sections 5, 7 and 9 like this will be specified below.
  • the manifold 10 'supported by the base 8 comprises in in addition to a valve 14 making it possible to isolate the T-connector from the section of flexible pipe 7 during operation of well heads 2 and 3.
  • each manifold 15 and 16 have substantially parallel axes, this which allows the respective end portions 17 and 18 of the sections flexible pipe 5 and 7 to be located substantially in the extension of each other.
  • the bases 6 and 8 also support boxes of connection of control umbilicals.
  • the base 6 supports two boxes of connection 22, 23 and the base 8 supports a connection box 24.
  • connection box 22 makes it possible to connect a command umbilical 25 from ship 4, an umbilical of control 26 connected to the wellhead 2 and a control umbilical 27 connected to the connection box 23.
  • the latter allows connect the control umbilical 27 and one end of an umbilical control 28 connected at the other end to the connection box 24.
  • the connection box 23 is also connected by the umbilical control valve 13 for controlling the opening or closing of the latter.
  • the connection box 24 allows connect the control umbilical 28, a control umbilical 29 from wellhead 3 and two control umbilicals respectively connected to valves 13, 14 for controlling their opening or closing.
  • the control umbilical 27 is permanently fixed to the base 6, and it is placed on the seabed simultaneously with the latter.
  • An arch 30 is placed on the path of the sections of flexible pipe extending between the ship 4 and the seabed, the flexible pipe sections resting on this arch 30 according to a configuration known in itself and of the "lazy-S" type.
  • the flexible pipe sections 5 and 9 are formed on their portion extending between the seabed and the ship 4, by flexible pipes specially adapted for the ascent of hydrocarbons and of the "riser" type.
  • valves 13 are open and the valve 14 is closed.
  • valves 13 are closed so as to isolate the well heads 2 and 3 and the valve 14 is opened so as to join the pipe sections 5, 7 and 9 and form a loop allowing injection by one end of one of the sections 5 and 9 a cleaning device from the ship 4.
  • the cleaning device can comprise in known manner in itself a brush and / or any other scraping system.
  • the base 8 is substantially identical to the base 6 to the exception is that it only carries a junction box support control umbilicals and it also carries valve 14.
  • the base 6 has not been shown in detail in the drawing.
  • the base 6 comprises a frame 31, made of metal in the example described, and a manifold support plate 32, this plate 32 which can advantageously be oriented in a position chosen with respect to the frame 31 as will be explained below.
  • each support 33 is provided with guide rails 33 a for centering the connection box during its descent on the support and a guide 33 b for the introduction of a pin extending below the connection box.
  • the guide 33 b has a flared opening in the upper part facilitating the introduction of the spindle.
  • the frame 31 has a generally flattened shape and rectangular.
  • the plate 32 is orientable by compared to the frame 31. More precisely, in the example of embodiment described, the plate 32 is connected to the frame 31 by an articulation of cardan type allowing the plate 32 to oscillate around a first geometric axis of rotation X substantially parallel to the side larger dimension of the frame 31 and a second geometric axis of rotation Y, perpendicular and intersecting with the X axis. The intersection of the X and Y axes corresponds substantially to the center of gravity of the tray so that it can be adjusted in position relatively easily.
  • the articulation of the plate 32 on the frame 31 takes place at by means of a cross 33 ′, shown in isolation in FIG. 7, comprising a tube 34 of axis X and a tube 35 of axis Y fixed to the tube 34 by an assembly structure 36 located in the center of the cross.
  • the plate 32 is integral on its underside a pin 37 of axis X, engaged in one end 38 of the tube 34 and can pivot in the latter around the geometric axis of rotation X.
  • the plate 32 is secured, on the opposite side, to a bearing 39 of axis X, being able to pivot around a pin 40 engaged in the end 41 of the tube 34 opposite the end 38.
  • the pin 40 is immobilized in rotation in the tube 34, and it is integral with its opposite end to the tube 34 of a fork 42, having two parallel walls between which a nut 43 can pivot around an axis of rotation Z parallel to the axis X.
  • This nut 43 is engaged on a threaded rod 44 mounted at rotation on the plate 32 around a geometric axis of rotation K perpendicular and intersecting the Z axis.
  • the threaded rod 44 is provided at its upper end a wheel 45 shaped to be able to be actuated in rotation by a manipulator robot.
  • the rotation of the threaded rod 44 causes the up or down the nut 43 and the rotational drive of the plateau around the geometric axis of rotation X since the journal 40 is fixed relative to the frame 31.
  • the tube 35 of the cross 33 ' is rotatably mounted around the Y axis on the frame 31. More precisely, the tube 35 is mounted free rotating at one end 46 on the frame 31 by means of a pin 90 secured to the frame 31.
  • the tube is secured to the other end a journal 91 rotatably supported by a bearing of the frame 31.
  • the pin 91 is secured at its end opposite to that engaged in the tube 35 of a fork 47 comprising two branches bearing rotation about an axis parallel to the Y axis a nut 48 in engagement with a threaded rod 49 rotatably mounted on the frame 31 around a axis W substantially perpendicular to the plane of the frame 31.
  • the threaded rod 49 is provided at its upper end with a shaped wheel 50 to be rotated by a manipulator robot. The rotation of the rod 49 causes the nut 48 to rise or fall and the pivoting of the plate 32 around the Y axis.
  • a spirit level 51 is fixed on the upper face of the plate 32 to allow positioning the plate 32 to the horizontal, with the axis H of the flange 11 substantially at the vertical, as shown in figure 6.
  • connection flange 11 Before attach the fitting to the end of the driving 12.
  • FIG. 11 shows the manifold 10 in view On top.
  • curvature limiting members constituted in the example described by a set 56 of vertebrae.
  • FIG. 12 shows a set 56 of vertebrae constituted by the assembly, in a manner known per se, of vertebrae 57 and 58 having a symmetrical shape of revolution and constituted by tubular elements having in section in a plane containing their axis of symmetry, a U shape with turned edges inward for vertebrae 57 or with edges facing the exterior for the vertebrae 58, the assembly of two vertebrae 58 performed by means of a vertebra 57.
  • each pipe section flexible engaged in a set of vertebrae 56 is free from slide inside of it.
  • Each set of 56 vertebrae is fixed, at its end adjacent to the manifold 10, to the plate 32 at by means of a collar 59.
  • the resumption of the bending forces is performed by the sets 56 of vertebrae fixed to the tray and the T-fitting is not subject to significant constraints which would otherwise damage type seals "grayloc" or the fitting itself.
  • This gantry 60 has a rigid U-shaped frame, the uprights 61 are pivotally fixed on the frame 31, around of a geometric axis of rotation V parallel to the geometric axis Y. More precisely, each upright 61 is fixed at its end lower removably on the frame 31 by means of a mechanism locking device 62 comprising a rotary member 63 mounted for rotation on the upright 61 and connected by a universal joint transmission 64 to a mechanism 65.
  • This mechanism 65 makes it possible to actuate a hook 66 engaging on the end 67 of an axis fixed to the frame 31, for retain the gantry 60 on the frame 31 while allowing its rotation.
  • the angular displacement of the frame is limited to the pedestal 8 by stops 61a arranged on one side of the Y axis and by cables 61 b connecting the cross member of the gantry 60 and the frame 31, these cables being attached to 61b near the free edge of the frame 31 on the same side as the stops 61 a .
  • the cables 61 b are tensioned when the gantry is arranged substantially perpendicular to the plane of the frame 31.
  • the cables 61 b make it possible to maintain the gantry substantially perpendicular to the base even in the case where the center of gravity of the latter is not in the vertical half-plane delimited above by the geometric axis of rotation of the gantry.
  • the base 6 has two supports 33 which box connection control umbilicals is better balanced than the base 8 and the angular displacement of the frame is limited by stops 61a disposed on either side of the axis Y.
  • the mechanism 65 comprises a nut 68 engaged on a rod threaded 69 rotated by the transmission 64.
  • the nut 68 is articulated, around an axis parallel to the V axis, at one end 70 a link connected to the hook 66, itself articulated in 69 around an axis of rotation parallel to the axis V.
  • the rotation of the member 63 causes through the transmission 64 the rotation of the threaded rod 69 and the rise of the nut 68, which leads to pivoting down hook 66 around the hinge pin 69.
  • the pivoting of the hook 66 allows the end 67 to be released as illustrated in Figure 16. There is a dotted line on this figure the position of the hook 66 at the end of pivoting after the reassembly of the nut 68.
  • the gantry 60 can allow the recovery of a base placed on the seabed.
  • the base 8 can then be brought to the rear of the laying vessel, on a tilting ramp 73.
  • the respective end portions 21 and 20 of the flexible pipe sections 9 and 7 are fixed to the manifold 10 'mounted on the base 8.
  • the gantry 60 rests on the rear stops 61 a .
  • the frame 31 of the base 8 is fixed at the rear to a first cable 74 wound on a winch and the gantry 60 is fixed by its cross member to two slings connected to a second cable 75 also wound on a winch.
  • the end portion 20 of flexible pipe is maintained by means of a gutter 76 suspended by a crane to minimize the bending moments exerted on the ends of the pipes
  • the ramp 73 is fitted at the top with a deflection pulley 77 over which the cable 74 passes, which supports the base 8 when this the latter gradually descended into the water in position substantially vertical. Cable 74 takes almost all of the weight of the base 8 when it is launched.
  • the base 8 is then lowered into the water and when it reaches a depth of a few tens of meters, we proceed to detaching the sock 71 using a manipulator robot (R.O.V) as illustrated in figure 19.
  • the cable 75 connected to the gantry 60 is not tense.
  • the weight of the base 8 and the pipe section hose located under the latter are taken up by cable 74.
  • the organs rotary 63 To detach the gantry 60, we rotate the organs rotary 63 by means of a manipulator robot so as to release the hooks 66 of the ends 67. Thanks to the distance separating the rotary organs 63 of the seabed, the rotary organs 63 are when activated at a height from the seabed sufficient for any particle clouds raised by the propellers of the manipulator robot do not obstruct the visibility of this latest.
  • the laying vessel has described a loop without having to reverse. It is not outside the scope of the invention to proceeding in the opposite direction, that is to say by first laying the section 5.
  • connection box For the umbilicals, bring the connection box at the end of a cable above the corresponding support and engage in the guide 33 b of the latter a chain extending the lower pin associated centering, as illustrated in figure 22.
  • connection boxes After installing the connection boxes, we carry out using a manipulator robot, the operations of connecting the umbilicals between them.
  • the orientation of the axis is corrected if necessary H of the flange 11 by turning with a robot manipulator the knobs 45 and 50.
  • the spirit level 51 which provides information on horizontality of plate 32.
  • the flange 11 is located at the bottom of a guide structure comprising two panels 11 a , 11 b used to position the connector fitted to the pipe 12 before it descends on the flange 11.
  • a guide 11 c allows the passage of a cable used to flatten said connection if necessary against the panels 11 a and 11 b before its descent on the flange 11.
  • the panels 11 a and 11 b are connected by an arch 11 d which does not obstruct the access of the robot manipulator to the flange 11, to the wheels 45 and 50 and allows the robot manipulator to see the spirit level 51.

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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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Supports For Pipes And Cables (AREA)
EP97921916A 1996-05-03 1997-04-30 Socle de support de manifold pour installation d'exploitation petroliere et procede de pose de l'installation Expired - Lifetime EP0897455B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9605586 1996-05-03
FR9605586A FR2748293B1 (fr) 1996-05-03 1996-05-03 Installation d'exploitation petroliere incorporant des socles de support de manifold, socle et procede de pose
PCT/FR1997/000775 WO1997042396A1 (fr) 1996-05-03 1997-04-30 Installation d'exploitation petroliere incorporant des socles de support de manifold, socle et procede de pose

Publications (2)

Publication Number Publication Date
EP0897455A1 EP0897455A1 (fr) 1999-02-24
EP0897455B1 true EP0897455B1 (fr) 2002-01-30

Family

ID=9491829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97921916A Expired - Lifetime EP0897455B1 (fr) 1996-05-03 1997-04-30 Socle de support de manifold pour installation d'exploitation petroliere et procede de pose de l'installation

Country Status (8)

Country Link
US (1) US6148921A (no)
EP (1) EP0897455B1 (no)
AU (1) AU710019B2 (no)
BR (1) BR9708969A (no)
FR (1) FR2748293B1 (no)
NO (1) NO315531B1 (no)
OA (1) OA10913A (no)
WO (1) WO1997042396A1 (no)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6637442B1 (en) * 1999-08-04 2003-10-28 Jeffrey Clifton Evans Apparatus and method for cleaning hopper barges
FR2817941B1 (fr) * 2000-12-08 2003-04-11 Thomson Marconi Sonar Sas Limiteur de courbure notamment pour cable sous-marin
US20040194963A1 (en) * 2003-03-05 2004-10-07 Torres Carlos A. Subsea well workover system and method
FR2889557B1 (fr) 2005-08-04 2008-02-15 Technip France Sa Installation sous marine equipee d'une conduite flexible a courbure controlee
RU2540739C2 (ru) * 2009-09-25 2015-02-10 Акер Сабси АС Вспомогательное устройство для эксплуатационного манифольда
GB2504695B (en) * 2012-08-06 2018-05-30 Statoil Petroleum As Subsea processing
GB2549102A (en) * 2016-04-04 2017-10-11 Forsys Subsea Ltd Pipeline integrated manifold
GB201621525D0 (en) 2016-12-16 2017-02-01 Statoil Petroleum As Tie-in Subsea pipeline
GB2576128B (en) 2017-12-22 2022-08-10 Equinor Energy As Interconnection of subsea pipelines and structures
GB2572335B (en) 2018-03-26 2022-09-28 Equinor Energy As Subsea well installation
GB2584099B (en) 2019-05-20 2021-10-20 Equinor Energy As Direct tie-in of subsea conduits and structures
US11230907B2 (en) 2019-07-23 2022-01-25 Onesubsea Ip Uk Limited Horizontal connector system and method

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Publication number Priority date Publication date Assignee Title
US3346045A (en) * 1965-05-20 1967-10-10 Exxon Production Research Co Operation in a submarine well
US3444927A (en) * 1967-11-21 1969-05-20 Exxon Production Research Co Servicing of wells
US3525401A (en) * 1968-08-12 1970-08-25 Exxon Production Research Co Pumpable plastic pistons and their use
US3637012A (en) * 1969-10-20 1972-01-25 Otis Eng Co Well flow circulating methods
US3674123A (en) * 1970-08-20 1972-07-04 Hydril Co Pig diverter
FR2266793B1 (no) * 1974-04-05 1982-08-27 Subsea Equipment Ass Ltd
US4102146A (en) * 1977-05-25 1978-07-25 Sofec, Inc. Method of and apparatus for handling hose underwater
US4525101A (en) * 1982-06-30 1985-06-25 Shell Oil Company Drill string deployment of cable pulling tool
JPS5924538U (ja) * 1982-08-09 1984-02-15 サンデン株式会社 電磁クラツチ
FR2556441B1 (fr) * 1983-12-07 1986-08-22 Alsthom Atlantique Appareillage a manchette flottante de raccordement etanche, reversible et telecommande de canalisations, notamment immergees
US4616706A (en) * 1985-02-21 1986-10-14 Exxon Production Research Co. Apparatus for performing subsea through-the-flowline operations
US5040603A (en) * 1990-04-30 1991-08-20 Halliburton Company Sequential remote control plug release system
BR9203008A (pt) * 1992-08-03 1994-02-22 Petroleo Brasileiro Sa Equipamento a ser instalado junto a um poco para permitir a interligacao de duas linhas visando a passagem de um pig
BR9203009A (pt) * 1992-08-03 1994-03-01 Petroleo Brasileiro Sa Equipamento a ser instalado nas linhas de fluxo que interligam uma central de coleta de oleo a um poco satelite para permitir a passagem de um pig

Also Published As

Publication number Publication date
OA10913A (en) 2003-02-21
WO1997042396A1 (fr) 1997-11-13
AU2780397A (en) 1997-11-26
FR2748293B1 (fr) 1998-06-19
NO983804L (no) 1998-08-19
US6148921A (en) 2000-11-21
EP0897455A1 (fr) 1999-02-24
NO983804D0 (no) 1998-08-19
NO315531B1 (no) 2003-09-15
BR9708969A (pt) 1999-08-03
FR2748293A1 (fr) 1997-11-07
AU710019B2 (en) 1999-09-09

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