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EP1509671B1 - Mehrfachkettenfahrleitung-steigrohr - Google Patents

Mehrfachkettenfahrleitung-steigrohr Download PDF

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Publication number
EP1509671B1
EP1509671B1 EP03756012A EP03756012A EP1509671B1 EP 1509671 B1 EP1509671 B1 EP 1509671B1 EP 03756012 A EP03756012 A EP 03756012A EP 03756012 A EP03756012 A EP 03756012A EP 1509671 B1 EP1509671 B1 EP 1509671B1
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EP
European Patent Office
Prior art keywords
pipe
pipe portion
point
floating support
contact
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
EP03756012A
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English (en)
French (fr)
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EP1509671A1 (de
Inventor
François-Régis PIONETTI
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.)
Saipem SA
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Saipem SA
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Filing date
Publication date
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Publication of EP1509671A1 publication Critical patent/EP1509671A1/de
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Publication of EP1509671B1 publication Critical patent/EP1509671B1/de
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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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E21B17/015—Non-vertical risers, e.g. articulated or catenary-type

Definitions

  • the present invention relates to a bottom-surface connection installation comprising at least one underwater pipe providing the connection between a floating support and the seabed, particularly at great depth.
  • These underwater pipes are called “risers” or “risers” as explained below.
  • These risers consist of unitary tubular elements welded or screwed together end to end made of rigid materials such as steel or composite material.
  • the subject of the present invention is a riser-type underwater pipe providing the connection between a floating support and the seabed, said riser being constituted by a catenary-type rigid pipe extending from said floating support up to at a point of contact at the bottom of the sea.
  • the technical field of the invention is the field of the manufacture and installation of bottom-surface production connections for the underwater extraction of oil, gas or other soluble or fuse material, or a suspension of mineral material, from the submerged wellhead for the development of production fields installed offshore at sea.
  • the main and immediate application of the invention being in the field of oil production, as well as in the re-injection of water and the production or re-injection of gas.
  • a floating support generally comprises anchoring means to remain in position despite the effects of currents, winds and waves. It also generally comprises means for drilling, storage and treatment of oil and means of unloading to removing tankers, the latter occurring at regular intervals to perform the removal of production.
  • the name of these floating supports is the Anglo-Saxon term “Floating Production Storage Offloading” (meaning “floating means of storage, production and unloading") which will be used the abbreviated term "FPSO” throughout the description FDPU or Floating Drilling & Production Unit), where the floating support is also used to carry out drilling operations with deviated wells in the height of the slice. of water.
  • a catenary riser according to the invention can be either a “riser of production” of crude oil or gas, or a riser of water injection, ensuring the connection with a underwater pipe resting at the bottom of the sea, is still a “drilling riser” ensuring the connection between the floating support and a wellhead located at the bottom of the sea.
  • Catenary-type links are generally made using flexible pipes, but their cost is extremely high because of the complex structure of the pipe (see for example WO 97 06 341 A).
  • Step Catenary Riser meaning "chain-shaped steel riser” whose abbreviated term “SCR” or “SCR” will be used.
  • catenary riser in the present description whether it is steel or other material such as a composite material.
  • the curvature varies along the chain from the surface, or its radius has a maximum value R max , up to the point of contact, or its radius has a minimum value R min (or R 0 in the formula above ).
  • R max maximum value
  • R min minimum value
  • the pipe has a radius of curvature which is maximum at the top of the chain, generally at least 1500, in particular from 1500 to 5000m, ie at the point of suspension on the FPSO, and which decreases until at the point of contact with the ground. At this point, the radius of curvature is minimal in the suspended portion. But, in the adjacent part resting on the bottom of the sea, said pipe being theoretically in a straight line, its radius of curvature is theoretically infinite. In fact, this radius is not infinite but extremely high, because there remains a residual curvature.
  • the contact point moves back and forth and, in the raised area or rested on the bottom, the radius of curvature successively passes from a minimum value R min to a extremely high value, even infinite in the case of a theoretical configuration where the underwater pipe rests on the bottom of the sea substantially in a straight line.
  • the most critical portion of the chain is thus located in the portion close to the point of contact and most of the forces in this lower part of the chain are in fact generated by the proper movements of the floating support and by the excitations which occur in the upper part of the chain subject to the current and the swell, all of these excitations then propagating mechanically all along the pipe to the foot of chain.
  • the surface floating support has a considerable buoyancy and remains insensitive to the vertical loads generated by the suspended chains on its plating, on the other hand, the horizontal tension H created by each of the chains must be counterbalanced, either by a balanced distribution on port and starboard of all the chains, either by reinforcing the anchoring of the floating support, the opposite side to the chains.
  • Patent EP 0 952 301 describes a FDPU associated with a chain-to-surface bond in a chain, through which the drill string passes, said bottom-surface connection serving not only as a guide, but also as a return path. for drilling muds loaded with debris from said drilling. In the lower part of said bottom-surface connection, the curvature is most accentuated, the rotating rod train rubs on the wall of the bottom-surface connection that may damage or even destroy the latter.
  • the problem posed is to provide a bottom-surface underwater line capable of withstanding the cumulative fatigue at the point of contact with the sea floor created by the movements of the surface support, as well as by the wave and current effects, mainly in the area close to the surface where the effects of said swell and said current are in general the most important.
  • Another problem posed is to provide a bottom-surface connection line whose horizontal tension at said point of contact with the sea and at said floating support is as low as possible, thus minimizing the imbalance created at the level of the anchoring of the floating support and groove formation phenomena at said point of contact.
  • Another problem posed is to provide a bottom-to-surface connection pipe of the drill riser type having improved mechanical characteristics, in particular to reduce the risk of damage to the riser caused by the rotating rod trains introduced into the riser and rubbing against the internal wall of said riser.
  • a solution to the problems posed is a riser-type underwater pipe providing the connection between a floating support and the bottom of the sea, said riser being constituted by a catenary-type rigid pipe extending from said floating support to a point of contact at the bottom of the sea, characterized in that said catenary riser comprises a lower portion of pipe terminating at said point of contact, portion lower pipe whose apparent linear weight in water is less than that of the rest of said pipe constituting said catenary riser.
  • the catenary pipe according to the invention therefore comprises at least two pipe portions corresponding to two different catenary curves, it is therefore called multi-catenary pipe.
  • said lower lightened pipe portion extends over a length of at least 100 m from said point of contact.
  • the pipe portion is alternately flexed to reach the minimum radius of curvature, then returned substantially in a straight line, which, because the minimum radius is greater, generates much lower alternating stresses in the device according to the invention compared to the prior art, thereby reducing fatigue throughout the service life which generally exceeds 25 years.
  • the groove created at the foot of the chain by the residual curvature will be less accentuated, which all the more improves the behavior in time of the bottom-surface connection.
  • said lower portion of lightened pipe extends over a length of 200 to 600m.
  • said lower pipe portion is lightened with a lower apparent linear weight in water of at least 25%, preferably 25 to 80% lower than that portion of the remainder of the pipe adjacent thereto.
  • a multi-catenary pipe according to the invention therefore comprises a pipe upper portion which extends from said floating support, said upper pipe portion being weighted so as to have an apparent linear weight greater than that of said portion of the remainder. of the pipe that is adjacent to it. the mass
  • the weighting of said upper portion of the pipe has the effect of increasing the apparent weight in the water of the pipe at this level and therefore increasing the tension in said pipe and thus reducing the inclination of the axis the pipe with respect to the vertical at the junction with the floating support; in addition, increasing the mass of said pipe increases the stability of said upper portion of pipe, which then becomes less sensitive to the effects of current and wave.
  • said upper weighted pipe portion extends over a water wafer corresponding to at least the zone of influence of the swell, that is to say preferably from 150 to 200m. In this zone, large currents are generally observed, the latter generally being substantially uniform in water slices corresponding to thermoclines. This increases the mass and the weight of the pipe in the upper water slice which constitutes the most disturbed zone of the bottom-surface connection.
  • said upper weighted pipe portion has an apparent linear weight at least 50% greater than that of the pipe portion adjacent to said upper portion, preferably said apparent linear weight is greater than 100 to 300 % to that of said portion of the remainder of the pipe adjacent thereto.
  • said multi-catenary pipe according to the invention provides the connection with a bottom located at a depth of at least 1000 m and said upper portion of weighted pipe preferably extends over a length of 150 to 250 m from the surface .
  • said lower portion of pipe is lightened by an increase in its buoyancy using buoyancy elements, preferably floats surrounding said pipe.
  • the multi-catenary pipe according to the invention consists of a "pipe in pipe” type pipe comprising two coaxial inner and outer pipes and having buoyancy elements associated with said pipe, preferably insulating, preferably further constituted by syntactic foam around said outer pipe.
  • said multi-catenary pipe comprises a said upper portion of weighted pipe extending from said floating support, said upper portion of pipe being increased by the fact that the tubular pipe wall thickness of steel is greater than that of the remainder of the pipe, including complementary hoops or localized masses that can be made integral, at regular intervals or not of said weighted pipe.
  • the present invention makes it possible to produce more resistant pipes which has a tubular wall thickness greater than the wall thickness of said portion of the remainder of the pipe adjacent thereto, but said lower pipe portion is lightened by floating elements.
  • a multi-catenary pipe comprises at least one transition pipe portion which provides the connection between the upper end of said lower pipe portion and the remainder of the pipe, said portion of transition pipe having an intermediate apparent linear weight and preferably whose value varies progressively stepwise or regularly between the value of the apparent linear weight of said lower portion of pipe and the value of the apparent linear weight of the pipe portion which leads to is adjacent to its other end.
  • the progressive variation of the apparent linear weight of said transition pipe portions can be obtained by a gradual change in the thickness of their steel tubular wall or by a gradual change in their buoyancy by varying the amount of syntactic foam.
  • one or more unit driving elements can be used whose apparent weight, especially the thickness, is uniform for each unit element but with intermediate values between those of the adjacent unit elements.
  • transition pipe portions can therefore extend over lengths of 12, 24 or 48 m, they make it possible to avoid sudden breaks in inertia which are detrimental to good behavior over time with respect to the fatigue of the pipe. bottom-surface bonding.
  • said multi-catenary pipe according to the invention constitutes a drilling riser ensuring the connection between a derrick placed on said floating support and a wellhead at the bottom of the sea or, preferably, the end an underwater pipe resting at the bottom of the sea, itself connected at its other end to a said wellhead.
  • FIG. 1 shows a side view of a bottom-surface connection 1 a , according to the prior art, suspended at 3 at a floating support 2 of the FPSO type, and resting on the bottom of the sea 4 at the point contact 5.
  • the curvature varies along the chain from the surface, or its radius has a maximum value R max , up to the point of contact, or its radius has a minimum value R min .
  • the surface support 2 moves, for example from left to right as shown in the figure, which has the effect of lifting or resting the chain-shaped pipe, at the bottom of the sea.
  • the floating support deviates from the normal position 2a, which for tensioning the chain 1 c effect by lifting and moving the contact point 5 to the right ; the radius of curvature R min at the foot of the chain increases, as well as the horizontal tension H a at the point of contact, as well as the tension in the driving at said floating support.
  • the pipe has a radius of curvature which is maximum at the top of the chain, ie at the point of suspension 3 on the FPSO, and which decreases to the point of contact 5 with the ground 4.
  • the radius of curvature is minimal in the suspended portion, but in the adjacent portion resting on the seabed, said pipe being theoretically in a straight line, its radius of curvature is theoretically infinite. In fact, this radius is not infinite but extremely high, because it remains a residual curvature.
  • FIG. 4 is a side view of a multi-curvature chain according to the invention constituted, in its upper part, of a weighted pipe portion 8 with respect to the running portion 7 located just below and in continuity, and in its lower part, a lightened pipe portion 6 relative to said current portion 7.
  • This arrangement according to the invention it follows that the radius of curvature R 0 at the bottom increases significantly, which significantly reduces the phenomena of fatigue explained previously.
  • the upper portion 8 being heavy will have a higher tension, which will increase all the stability of the upper part of said chain, which will become less sensitive to the effects of the current and the swell, the latter having significant effects to depths of 100 to 150m from the surface.
  • the excitation at the head being reduced, their repercussion at the foot of the chain is less important, which reduces by the same movements, therefore the fatigue in this critical lower portion 6 of the bottom-surface connection.
  • an upper portion 8 with a length of 150 to 250 m weighed 100 to 300% with respect to the median running portion 7 situated just below, the length of the portion is used.
  • median current 7 being for example between 75 and 120% of the water height
  • the lower portion of pipe 6 being lightened by 25 to 80% relative to the middle running portion 7, and representing a length of 200 to 600m, extending to the bottom of the sea 4 beyond the point of contact 5 over several tens, or even several hundred meters.
  • the lower portion 6 of the raised chain is always of the lightened type and not of the type corresponding to the underwater pipe resting on the bottom of the sea and connecting the wellheads.
  • FIG 3 there is shown a side view of a floating support 3 UPDF type comprising a bottom-surface 1 binding in a catenary configuration called drilling riser connecting the base of the derrick 2 1 between drilling to a device 5 1 located on the seabed, said device ensuring the guidance of the pipe in the penetration zone of the seabed.
  • Said drilling riser 1 has the function of guiding the rod train actuated and manipulated from said drilling rig 2 1 , the return of drilling mud being effected in the space existing between said drill string and said riser of drilling.
  • the shank being strongly curved in the lower part of the chain has a tendency to rub on the walls of the drill riser, thus significantly increasing the wear and risk of damaging said riser.
  • the multi-catenary pipe according to the invention thus makes it possible not only to reduce the fatigue problems of the riser foot zone by increasing the radius of curvature in the foot, but also to reduce the internal wear of said drill riser under the belt. effect of the friction of the rotating rod train with the wall of said riser.
  • the fatigue of the drill string itself, by reducing the curvature in the chainstay foot zone of the drill riser will thus be considerably reduced; in the same way, the power required for drilling itself will be radically reduced.
  • the device according to the invention thus makes it possible to improve the fatigue strength of the drill riser in the region of the chain foot, to reduce the phenomena of wear by the drill string rotating inside said riser and significantly improve the alignment, at the level of the FDPU, between said drilling riser and said derrick.
  • the weighting and the length of the upper portion 8 are advantageously increased by in such a way as to reduce as much as possible the angle ⁇ that the vertical and the axis of the pipe makes at the level of the floating support 2, and therefore in such a way as to reduce the misalignment of the axis of the pipe with respect to the axis of the derrick 2 1 , which facilitates the introduction of drill pipes and drilling operations in general.
  • the steel thickness of the lower portion 6 of the riser is advantageously increased to reduce the risk of frictional wear on the drill string, since this additional weight is compensated for by an increase in the weight of the drill string.
  • floating elements for example shells syntactic foam, to obtain a mean weight in water as described above.
  • the bottom-surface connection and advantageously incorporates portions of transition line at 9 1 , 9 2 , for example over a length of 12, 24 or 48m in length, consisting of a progressive or stepwise increase in the thickness of the pipe from the lower part to the upper part, and / or a progressive integration of buoyancy elements so that the lower part called “transition pipe” is lighter than the upper part of said transition pipe.
  • FIG. 6 shows the transition zone 9 1 between the upper portion consisting of a pipe 8 weighed down by increasing the thickness of its wall 11 1 , as well as by the addition of circles 12 spaced regularly or not regularly , and the pipe portion 7 of lower thickness 11 3 .
  • Said transition zone 9 1 is provided by a pipe length of 24 m, of thickness 11 2 between the values 11 1 and 11 3 , preferably equal to the average of the two said values.
  • FIG. 7 shows the lightened pipe portion 6 equipped on the left side with a long continuous buoyancy element 10 1 consisting of syntactic foam shells and on the right side with individual buoyancy 10 2 regularly spaced and giving the same average buoyancy per meter of pipe that said continuous element 10 1 .

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
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  • Earth Drilling (AREA)
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Claims (16)

  1. Unterwasserleitung vom Steigleitungstyp (1), die die Verbindung zwischen einem schwimmenden Träger (2) und dem Meerboden (4) sichert, wobei die Steigleitung (1) aus einer steifen Leitung vom Hängeleitungstyp besteht, die sich von dem schwimmenden Träger (2) bis zu einem Kontaktpunkt (5) am Meerboden (4) erstreckt, dadurch gekennzeichnet, daß die Hängesteigleitung einen unteren Leitungsteil (6) umfaßt, der an dem Kontaktpunkt (5) endet und dessen scheinbares lineares Gewicht im Wasser kleiner ist als das des Restes (7, 8) der Leitung ist, die die Hängesteigleitung (1) bildet.
  2. Leitung nach Anspruch 1, dadurch gekennzeichnet, daß sich der leichter gemachte untere Leitungsteil (6) über einer Länge von mindestens 100m ab dem Kontaktpunkt (5) erstreckt.
  3. Leitung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß sie die Verbindung mit einem Boden sichert, der bei einer Tiefe von mindestens 1000m liegt und sich der leichter gemachte untere Leitungsteil (6) sich über eine Länge von 200 bis 600m erstreckt.
  4. Leitung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der untere Leitungsteil (6) leichter gemacht ist, mit einem scheinbaren linearen Gewicht im Wasser, welches um mindestens 25%, vorzugsweise zwischen 25% and 80%, kleiner im Verhältnis zu dem ihm anhängenden Restteil der Leitung (7) ist.
  5. Leitung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie einen oberen Leitungsteil (8) umfaßt, der sich ab dem schwimmenden Träger (2) erstreckt, wobei der obere Leitungsteil (8) derart schwerer gemacht ist, daß er ein scheinbares lineares Gewicht aufweist, das größer ist als das des ihm anhängenden Restteils der Leitung (7).
  6. Leitung nach Anspruch 5, dadurch gekennzeichnet, daß sich der schwerer gemachte obere Leitungsteil (8) über eine Wasserschicht erstreckt, die mindestens dem Einflußraum der Woge entspricht, vorzugsweise zwischen 150 und 200m.
  7. Leitung nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß der schwerer gemachte obere Leitungsteil (8) ein scheinbares lineares Gewicht aufweist, das mindestens um 50% größer als das des oberen anhängenden Restteils (7) der Leitung ist, wobei das scheinbare lineare Gewicht vorzugsweise um zwischen 100 und 300% größer ist als das des ihm anhängenden Restteils (7) der Leitung.
  8. Leitung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß sie die Verbindung mit einem Boden (4) sichert, der bei einer Tiefe von mindestens 1000m liegt, wobei sich der schwerer gemachte Leitungsteil (8) über einer Länge von 150 bis 250m von der Oberfläche erstreckt.
  9. Leitung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß sie umfaßt:
    a) einen schwerer gemachten oberen Leitungsteil (8), der sich von dem schwimmenden Träger bis zum oberen Ende eines mittleren Teils (7) der Leitung erstreckt und dessen scheinbares lineares Gewicht größer ist als das des mittleren Leitungsteils (7) und
    b) einen leichter gemachten unteren Leitungsteil (6), der sich vom unteren Ende des mittleren Leitungsteils (7) bis zum Kontaktpunkt (5) am Meerboden (4) erstreckt und dessen scheinbares lineares Gewicht kleiner ist als das des mittleren Leitungsteils (7).
  10. Leitung nach Anspruch 9, dadurch gekennzeichnet, daß sie die Verbindung zwischen einem schwimmenden Träger (2) an der Oberfläche und dem Kontaktpunkt (5) am Meerboden (4), der bei einer Tiefe von mindestens 1000m liegt, sichert und, daß sie aufweist:
    a) einen schwerer gemachten Leitungsteil (8), der sich über einer Länge zwischen 150 und 250m von dem schwimmenden Träger erstreckt und der einem Schwerermachen von 100 bis 300% im Vergleich zum benachbarten mittleren Leitungsteil (7) entspricht und
    b) einen mittleren Leitungsteil (7), dessen Länge zwischen 75 und 120% der Wasserhöhe zwischen der Oberfläche und dem Kontaktpunkt (5) liegt und
    c) einen erleichterten unteren Leitungsteil (6), dessen scheinbares lineares Gewicht um 25 bis 80% kleiner ist als das des mittleren Leitungsteils (7), der dem durchlaufenden Teil der Leitung entspricht und der sich über einer Länge von zwischen 200 und 600m von dem Kontaktpunkt erstreckt.
  11. Leitung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der untere Leitungsteil (6) durch die Erhöhung seiner Schwimmfähigkeit mittels Auftriebselemente, die mit der Leitung (1) verknüpft sind, vorzugsweise Schwimmer (101, 102), die die Leitung umschließen und die ferner vorzugsweise aus syntaktischem Schaumstoff bestehen.
  12. Leitung nach Anspruch 11, dadurch gekennzeichnet, daß sie aus einer "pipe in pipe" Leitung besteht, die zwei koaxiale innere und äußere Leitungen umfaßt und die Auftriebselemente aufweist, die vorzugsweise isolierend sind und die ferner vorzugsweise aus syntaktischem Schaumstoff um die äußere Leitung bestehen.
  13. Leitung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß sie einen schwerer gemachten oberen Leitungsteil (8) umfaßt, der sich ab dem Schwimmträger (2) erstreckt, wobei der obere Leitungsteil dadurch schwerer gemacht ist, daß die Rohrwanddicke (111, 12) einer Stahlleitung größer ist als jene (112) des Restteils der Leitung (7, 8).
  14. Leitung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß der leichter gemachte untere Leitungsteil (6) durch Auftriebselemente (10) erleichtert ist und eine Rohrwanddicke aufweist, die größer ist als die Wanddicke des ihm anhängenden Leitungsteils (7).
  15. Leitung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß sie mindestens einen Übergangsleitungsteil (91, 92) umfaßt, der die Verbindung zwischen dem oberen Ende des unteren Leitungsteils (6) und dem Rest der Leitung (7, 8) sichert, wobei der Übergangsleitungsteil (91, 92) ein intermediäres scheinbares lineares Gewicht aufweist, das vorzugsweise progressiv nach Stufen oder regelmäßig zwischen dem Wert des scheinbaren linearen Gewichts des unteren Leitungsteils (6) und dem Wert des sichtbaren linearen Gewichts des Restteils der ihm am anderen Ende anhängenden Leitung schwankt.
  16. Leitung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß sie eine Bohrsteigleitung bildet, die die Verbindung zwischen einem Bohrturm (21), der an dem Schwimmträger (2) angeordnet ist und einem Schachtkopf am Meerboden (4) oder vorzugsweise dem Ende (5) einer Unterwasserleitung, die am Meerboden (4) liegt und die selber an ihrem anderen Ende mit einem Schachtkopf (51) verbunden ist, sichert.
EP03756012A 2002-05-31 2003-05-27 Mehrfachkettenfahrleitung-steigrohr Expired - Lifetime EP1509671B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0206695A FR2840350B1 (fr) 2002-05-31 2002-05-31 Conduite sous-marine de liaison fond-surface du type multi-catenaire
FR0206695 2002-05-31
PCT/FR2003/001599 WO2003102358A1 (fr) 2002-05-31 2003-05-27 Colonne montante du type multi-catenaire

Publications (2)

Publication Number Publication Date
EP1509671A1 EP1509671A1 (de) 2005-03-02
EP1509671B1 true EP1509671B1 (de) 2006-08-16

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US (1) US7189029B2 (de)
EP (1) EP1509671B1 (de)
AT (1) ATE336637T1 (de)
AU (1) AU2003258777A1 (de)
DE (1) DE60307629D1 (de)
FR (1) FR2840350B1 (de)
WO (1) WO2003102358A1 (de)

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US7744312B2 (en) * 2006-11-10 2010-06-29 Single Buoy Moorings, Inc. Offshore pipe string system and method
US8596913B2 (en) * 2009-02-10 2013-12-03 Shell Oil Company Free standing steel catenary risers
WO2011071586A1 (en) 2009-12-10 2011-06-16 Exxonmobil Upstream Research Company System and method for drilling a well that extends for a large horizontal distance

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DE69834545D1 (de) 1998-03-27 2006-06-22 Cooper Cameron Corp Verfahren und Vorrichtung zum Bohren eines Unterwasserbohrlochs
WO2002087869A2 (en) * 2001-04-27 2002-11-07 Fiberspar Corporation Improved composite tubing
FR2840013B1 (fr) * 2002-05-22 2004-11-12 Technip Coflexip Systeme de colonne montante reliant deux installations sous-marines fixes a une unite de surface flottante

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WO2003102358A1 (fr) 2003-12-11
US7189029B2 (en) 2007-03-13
AU2003258777A1 (en) 2003-12-19
EP1509671A1 (de) 2005-03-02
DE60307629D1 (de) 2006-09-28
FR2840350A1 (fr) 2003-12-05
ATE336637T1 (de) 2006-09-15
FR2840350B1 (fr) 2004-12-10
US20050254900A1 (en) 2005-11-17

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