• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention discloses a connector comprising an external locking ring (11) allowing a bayonet-type connection on either side with two male (9) and female (8) connector elements, by means of tenons having angular ranges. identical. In addition, the connector comprises at least one removable pin (12) for locking the locking ring (11) in translation, in particular during locking and unlocking.
    公开号:FR3045707A1
    申请号:FR1562604
    申请日:2015-12-17
    公开日:2017-06-23
    发明作者:Emmanuel Persent；Gerard Papon；Eleonore Roguet；Navid Saeedi
    申请人:IFP Energies Nouvelles IFPEN；
    IPC主号:
    专利说明:

    The present invention relates to the field of drilling and oil exploitation of deposit in very deep sea. It relates to a riser connector.
    A riser (or "riser") is formed by a set of tubular elements of length between 15 and 27 m (50 and 90 feet), assembled by connectors. The tubular elements generally consist of a main tube provided with connectors at each end. Tubular auxiliary pipes also called peripheral pipes commonly called "kill line", "choke line", "booster line" and "hydraulic line" allowing the circulation of technical fluids are provided parallel to the main tube. The tubular elements are assembled on the drilling site, from a floating support. The column descends into the water portion as the assembly of the tubular elements, until reaching the wellhead located on the seabed.
    In order to drill at water depths up to 3500 m or more, the weight of the riser becomes very penalizing. This phenomenon is aggravated by the fact that, for the same maximum operating pressure, the length of the column imposes an inner diameter of the auxiliary lines larger given the need to limit the pressure losses.
    Furthermore, the need to reduce the assembly time of the risers is all the more critical as the water depth, and therefore the length of the column, are important.
    A rising column (or "riser") for other applications, including production, packaging (English "completion") or for repackaging ("work-over"), is also constituted by a set of tubular elements assembled by connectors.
    The documents FR 2925105, FR 2956693 and FR 2956694 describe various solutions including proposing to involve the auxiliary conduits, together with the main tube, the recovery of the longitudinal forces applied to the riser. However, for the systems described in these patents, the attachment of the auxiliary lines with respect to the main tube causes tensile forces in the auxiliary lines. In order to resist these tensile forces, the thicknesses of the auxiliary lines are large, which generates an increase in the mass, the size of the floats and consequently the cost of the riser. Another problem with these connectors is the inspection and maintenance of the locking ring. Indeed, the locking rings in the aforementioned patents are not completely removable. It is therefore not possible to inspect the entire locking ring.
    To overcome this problem, patent applications WO 2015/071411 and WO 2015/169560 relate to connectors provided with removable locking rings, thanks to two bayonet connections. However, these two connectors require a particular arrangement of tenons to prevent the simultaneous disconnection of the ring with the two riser sections.
    The present invention discloses a solution that provides a compact design of a connector by means of a locking ring surrounding the main tube members. The connector according to the invention comprises a locking ring allowing a bayonet type connection on both sides with two riser sections, by means of studs having identical angular areas. In addition, the connector comprises at least one removable pin for locking the locking ring in translation, in particular during locking and unlocking. Thus, the connector according to the invention is removable, and the simultaneous disassembly of the ring with the two riser sections is prevented. In addition, the dimensions of the ring (internal diameter almost identical to the outer diameter of the main tube elements) allow positioning of the locking ring closer to the main tube elements, which allows compactness of the connector.
    The device according to the invention The invention relates to a connector for assembling two riser sections, comprising a first main tube element extended by a male connector element, a second main tube element extended by a female connector element, the element male connector fitting into said female connector element for connecting said two main tube elements, said connector comprising locking means of said assembly comprising a locking ring disposed around said main tube elements, said locking ring juxtaposing the zone of the interlocking said male connector element in said female connector element, said locking ring comprising a first) and a second series of tenons on its inner surface, and said male and female connector elements respectively having on their outer face a third and a fourth series of tenons cooperating respectively with said first and second series of tenons. Said locking means further comprise at least one removable pin arranged in said locking ring and cooperating with a tenon of said third or fourth series of tenons for locking said translation locking ring with respect to said male or female connector element, and the tenons of the first and second series of tenons protrude over identical angular ranges.
    According to one embodiment of the invention, each series of tenons comprises at least one row of tenons, and preferably two rows of tenons.
    Advantageously, said removable pin is arranged between each tenon of a row of tenons of said third or fourth series of tenons.
    According to one embodiment of the invention, said removable pin is arranged at said row of tenons closest to the center of said locking ring of said first or second series of tenons.
    According to one design, the circumferential distributions of said tenons of two consecutive rows of tenons of the same series of pins are alternated.
    According to a variant, at least one row of tenons of a series of tenons is inscribed in a different diameter of another row of said series of tenons.
    According to an alternative, the rows of tenons of at least one series of tenons are inscribed in identical diameters.
    According to one embodiment, said removable pin is threaded and is arranged in said locking ring by screwing.
    Preferably, said series of tenons comprise at least three tenons, and preferably at least four tenons.
    According to one embodiment, said male and female connector elements are provided with guide means for the respective passage of a first and a second auxiliary tube element.
    According to a first variant, said auxiliary tube elements are integrally attached to said guide means.
    According to a second variant, an auxiliary tube element is integral with one of said guide means and the other auxiliary tube element is connected by a sliding connection with the other of said guide means, said sliding connection allowing a translational movement. relative between said main tube member and said auxiliary tube member over a limited distance.
    According to a third variant, said two auxiliary tube elements are connected by a sliding connection with said guide means.
    According to one implementation of the invention, a first axial clearance is provided between said first series of tenons and said third series of tenons, and a second axial clearance is provided between said second series of tenons and said fourth series of tenons.
    Advantageously, said first and second axial clearances are strictly positive and are between 0.5 and 30 mm, preferably between 0.5 and 10 mm.
    In addition, the present invention relates to a riser comprising at least two riser sections assembled by a connector according to one of the preceding features.
    In addition, the invention relates to a method of assembling two riser sections by means of a connector according to one of the preceding characteristics, the method for which the following steps are performed: a) inserting a first tube element main in said locking ring; b) inserting said removable peg into said locking ring; c) inserting a second main tube member into said locking ring; and d) locking said locking ring.
    According to one embodiment, the locking step is implemented by relative rotation of said locking ring with respect to said main tube elements.
    According to one embodiment, at least one insertion of at least one main tube element into said locking ring is implemented by a relative translation of said locking ring with respect to said main tube element.
    According to a variant, at least one insertion of at least one main tube element into said locking ring is implemented by at least a first translation, a first rotation and a second relative translation of said locking ring with respect to said element. of main tube.
    Furthermore, the invention relates to a method of disassembling two riser sections by means of a connector according to one of the preceding characteristics, in which method the following steps are performed: a) unlocking said locking ring; b) removing a first main tube member from said locking ring; c) removing said removable pin from said locking ring; and d) removing a second main tube member from said locking ring.
    According to one embodiment of the invention, the unlocking step is implemented by relative rotation of said locking ring with respect to said main tube elements.
    According to one embodiment, at least one withdrawal of at least one main tube element from said locking ring is implemented by a relative translation of said locking ring with respect to said main tube element.
    According to one variant, at least one withdrawal of at least one main tube element from said locking ring is implemented by a first translation, a first rotation and a second relative translation of the locking ring with respect to said tube element. main.
    In addition, the invention relates to the use of a riser according to one of the preceding characteristics for carrying out a drilling operation, or a reconditioning of wells or production at sea.
    BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the device according to the invention will appear on reading the following description of nonlimiting examples of embodiments, with reference to the appended figures and described below.
    Figure 1 shows schematically a riser according to the invention.
    Figure 2 illustrates a riser section according to one embodiment of the invention.
    Figure 3 illustrates the connector according to another embodiment of the invention.
    FIG. 4 illustrates a male connector element according to one embodiment of the invention.
    Figure 5 illustrates a female connector element according to one embodiment of the invention.
    Figure 6 illustrates a locking ring according to one embodiment of the invention.
    FIG. 7 illustrates a connection with a game according to one embodiment of the invention.
    FIGS. 8a to 8d illustrate the distribution of the games for the embodiment of FIG. 7, respectively for the steps of approaching, bringing the ring into contact with the female connector element, locking and energizing.
    Detailed description of the invention
    According to one (non-limiting) embodiment of the invention, FIG. 1 schematizes an riser 1 installed at sea. The riser 1 extends the well P and extends from the wellhead 2 to a floating support 3, for example a platform or a boat. The wellhead 2 is provided with shutter commonly called "B.O.P." or "Blow Out Preventer". The riser 1 is constituted by the assembly of several sections 4 assembled end to end by connectors 5. Each section is composed of a main tube element 6 provided with at least one auxiliary pipe element 7, also called pipe peripheral. The auxiliary lines called "kill line" or "choke line" are used to ensure the safety of the well during the course of the procedures for controlling the inflow of fluids under pressure in the well. The "choke" line is a safety line that carries fluids (oil, water, gas) from the well during an approach and directs them to the choke manifold and the torch. The line "kill" is a safety line that allows to inject into the well heavy fluids and cements to stop an otherwise uncontrollable eruption. The auxiliary line called "booster line" allows to inject mud into the well in order to increase its speed of ascent and to avoid the sedimentation of the cuttings; it is also used to replace the sludge contained in the riser with water before disconnecting. The pipe called "hydraulic line" allows to control the shutter of the wellhead. The hydraulic lines are used to supply the safety devices of the BOPs (valves and accumulators) with hydraulic fluid (distilled water charged with glycol) under pressure.
    FIG. 2 diagrammatically represents a section 4 of the riser according to one nonlimiting embodiment of the invention. The section 4 comprises a main tube element 6 whose axis is the axis of the riser. The auxiliary tubes 7 constitute lines or auxiliary lines arranged parallel to the axis of the main tube. The auxiliary tube elements 7 have lengths substantially equal to the length of the main tube element 6, generally between 10 and 30 meters. At least one line 7 is disposed at the periphery of the main tube. In Figure 2, two lines 7 are schematized.
    A connector 5 shown in FIG. 1 consists of two elements designated, with reference to FIG. 2, by the female connector element 8 and the male connector element 9. The connector elements 8 and 9 are mounted at the ends of the connector main tube element 6. The female connector element 8 is integral with the tube 6, for example by means of welding, screwing, crimping or a wedge connection. The male connector element 9 is integral with the tube 6, for example by means of welding, screwing, crimping or a wedge connection. For the illustrated example, the assembly of the male connector element 9 with a female connector element 8 of another section forms the connector 5 which transmits forces of a rising column section to the next section, in particular the longitudinal forces to which the riser is subjected.
    The connector according to the invention is adapted to a drilling riser, for example as described in relation with FIGS. 1 and 2, but the connector according to the invention can also be adapted to a conditioning riser (from the English "completion"), work-over, or production, which has the special feature of not having an auxiliary line. According to the invention, the connector comprises: a first main tube element extended by a male connector element, and this element may optionally be provided with guiding means (for example a male flange) for the passage of an element of auxiliary tube (where the column comprises at least one auxiliary line), - a second main tube element extended by a female connector element, and it may optionally be provided with guiding means (for example a female flange) for the passing an auxiliary tube element (where the column has at least one auxiliary line), the male connector member engaging in the female connector element for connecting the main tube elements and the auxiliary tube elements; optionally, a first auxiliary tube element passing through the male flange, optionally a second auxiliary tube element passing through the female flange, and assembly locking yen comprising: a locking ring located around the main tube members, the locking ring juxtaposing the nesting area of the male connector member in the female connector member, the locking ring comprising, on its inner face, a first series and a second series of tenons adapted to cooperate with a third series and a fourth series of tenons respectively disposed on the outer face of the male and female connector elements, and o at least one removable pin, the demountable pin being arranged in the locking ring and being able to cooperate with at least one tenon of the third or fourth series of tenons (that is to say with a pin of the male or female connector element) for locking the locking ring in translation with respect to one of the male or female connector elements.
    For the embodiment, for which the connector has at least one auxiliary tube element, the locking ring is located between the main tube elements and the auxiliary tube elements: the locking ring is positioned on the outer surface of the elements male and female connectors, and the auxiliary tube member is located outside the locking ring. In other words, the distance between the axis of the auxiliary tube element and the axis of the main tube is greater than the sum of the outer radius of the locking ring and the radius of the auxiliary pipe element.
    Thus, thanks to the four sets of tenons, two bayonet type connections are formed: a first between the locking ring and the male connector element, a second between the locking ring and the female connector element. In this way, the locking ring is made removable relative to the male and female connector elements, which allows its inspection and maintenance.
    The removable pin is adapted to cooperate with a pin of one of the two male or female connector elements, to prevent axial translation of the locking ring with the male or female connector element with which the removable pin is in contact. Thus, when assembling two sections by means of the connector, it is possible to prevent disassembly of the locking ring, when the second connector element is fitted with the first connector element. Advantageously, the removable pin, once mounted in the locking ring, is projecting on the inner part of the locking ring. The projecting distance of the removable pin may be equivalent to the projecting distance of the tenons of the locking ring. The removable peg can be mounted in the locking ring on the outer surface of the locking ring. Preferably, the removable peg is arranged to cooperate with the connector element intended to be mounted first in the locking ring. Thus, the locking ring can be suspended (and held) to the male or female connector element, which is the upper element (top), when this male or female element is lifted for connection. The removable peg may be inserted into the lock ring once the first assembly (lock ring and a first connector member) is assembled but not locked. The removable peg may be removed from the locking ring once the second assembly (locking ring and second connector member) is disassembled, and the first assembly (locking ring and first connector member) is unlocked (ie ie the first connector element is in the locking ring, but the series of tenons do not cooperate).
    According to the invention, the tenons of the first and second series of tenons (and a fortiori third and fourth series of tenons) are projecting on identical angular ranges. The angular range of a tenon is the angle formed by the portion of circle occupied by the tenon on the diameter in which it is inscribed. For example, if a series of tenons have tenons which each represent a sixth of a circle, then the angular range of the post is 60 °. Thus, thanks to this design, the locking and unlocking of the locking ring with respect to the two connector elements can result from a single rotation and becomes simultaneous. In this way, the locking ring is rotated only between two angular positions.
    According to a first implementation of the invention, the circumferential distributions of the first and second series of tenons are symmetrical with respect to a radial plane passing between the two sets of tenons. In other words, the tenons of the first and second sets of tenons face each other (are aligned). According to a second implementation of the invention, the circumferential distributions of the first and second series of tenons are opposite: the circumferential distribution of the second series of tenons is offset with respect to the first series of tenons, an angle corresponding to the angular range of a tenon. In other words, the tenons of one series face the intervals of the other series. According to a third embodiment of the invention, the circumferential distributions of the tenons of the first and second series are offset relative to each other by an angle corresponding to half the angular range of a tenon (or any other angle). The arrangement of the locking ring around the main tube elements, by juxtaposing the interlocking zone of the male and female connector elements implies an equivalence of the inner diameter of the locking ring and the outer diameter of the main tube elements. The nesting zone corresponds to the portion of the connector in which the male connector element engages in the female connector element. In other words, the internal diameter of the locking ring substantially corresponds to the outer diameter of the main tube elements, which is added the projection height of the pins of the locking ring and the connector elements. Thus, the internal diameter of the locking ring is substantially equal to the diameter of the male connector element fitted into the female connector element.
    Preferably, the locking ring can be made in one piece.
    The connector can be designed and sized to meet the specifications specified by the API 16 R and API 2RD standards issued by the American Petroleum Institute.
    The various embodiments described above and hereinafter can be combined, so as to combine their effects.
    According to a design of the invention, the removable pin can be threaded. It can then be mounted in the locking ring by screwing. This design allows a quick assembly of the removable peg. In order to facilitate its assembly, the removable peg may be hollow to allow its manipulation with a tool.
    According to one characteristic of the invention, the pin may be of any shape, in particular of cylindrical shape (of circular or elliptical section), conical, parallelepipedal (of rectangular or square section), etc.
    According to one embodiment of the invention, each series of tenons comprises at least one row of tenons. A tenon row is a circumferential distribution of the tenons. In each row of tenons, there is an alternation of projecting tenons and empty spaces (intervals), these empty spaces allow the passage of the corresponding tenons of the series of tenons with which the row of tenons cooperates.
    According to one embodiment of the invention, the series of tenons may comprise a plurality of rows of tenons, in particular two or three rows of tenons. The plurality of tenon rows allows a reduction of the axial forces on the tenons, which makes it possible to limit the mechanical fatigue of the tenons.
    According to one possible design, each series of tenons comprises a single row of tenons. According to a first alternative, each series of tenons comprises two rows of tenons. According to a second alternative, each series of tenons comprises three rows of tenons. According to a third alternative, two of the four sets of tenons comprise a row of tenons, and the two other series comprise two rows of tenons. According to a fourth alternative, two of the four sets of tenons have two rows of tenons, and the other two series have three rows of tenons.
    In the case where a series of tenons comprises several rows of tenons, then the rows of tenons can be inscribed in different diameters. This design makes it possible to pass the row of tenons of smaller diameter, and thus, it is possible to lock and unlock the bayonet connection by a single rotation.
    In the case where a series of tenons comprises several rows of tenons, then the rows of tenons can be inscribed in identical diameters. This design imposes an insertion and a locking of the bayonet connection by a relative movement composed of a first translation, a first rotation, a second translation and a second rotation. This design therefore allows better security of the connection because it avoids unwanted disconnection.
    Each row of tenons comprises a plurality of pins regularly distributed over a diameter. Advantageously, the tenons of the different rows can be arranged to allow a locking 360 °. In one design, the tenon rows may include three studs having an angular range of 60 °, or 40 °. Alternatively, the tenon rows may comprise four studs having an angular range of 45 °, or 30 °. Alternatively, the tenon rows may include five tenons having an angular range of 36 °, or 24 °. According to another alternative, the rows of tenons may comprise six tenons having an angular range of 30 °. Alternatively, the rows of tenons may comprise eight studs having an angular range of 22.5 ° or 15 °. In order to have projecting lugs over identical angular ranges, all the rows of all the series of lugs may have the same number of lugs.
    According to one embodiment of the invention, the locking means comprise a plurality of pins. Thus, it is possible to distribute the efforts on the pieces and hold them in cooperation. For this embodiment, it may be provided a pin cooperating on each pin of the third series or the fourth series of pins (series of tenons male and female connector elements). Alternatively, it can be provided a removable peg in cooperation with one of two tenon among the tenons of the third or fourth series of tenons. This alternative makes it possible to obtain a number between tenons and forces exerted on the tenons. According to an alternative embodiment, three removable pins are provided in the connector. This variant embodiment allows isostatic support.
    Preferably, in the case where the series of tenons comprises several rows of pins, each removable pin is arranged in the locking ring at the row of tenons, which is the most central of the locking ring. In other words, each pin is mounted in the locking ring at the row of pins furthest from the ends of the locking ring.
    FIG. 3 illustrates, in a nonlimiting manner, a connector according to one embodiment of the invention, the connector assembles two riser sections. Figure 3 corresponds to a sectional view of the connector. In this figure, only one side of the sectional view is shown, the second side can be deduced by axial symmetry. The axis of the sections and the connector is represented horizontally. In this figure, the flanges and the auxiliary tube elements are not shown. A male connector element 9 is fitted into a female connector element 8. Locking means lock the assembly. The locking means comprise a locking ring 11. The locking ring 11 is arranged around the male and female connector elements 8, by juxtaposing the interlocking zone of the male connector element 9 in the female connector element 8. The locking ring 11 has an inner diameter substantially corresponding to the outer diameter of the main tube members (see Figure 2). The locking ring 11 comprises, on its inner face, a first series of tenons 15 and a second series of tenons 16. The first series of tenons 15 cooperates with a third series of tenons 17, arranged on the upper face of the element male connector 9. The second set of tenons 16 cooperates with a fourth series of tenons 18, arranged on the upper face of the female connector element. In addition, the locking means further comprises at least one removable pin 12. The removable pin 12 is mounted in the locking ring, so as to project on its inner portion. The demountable pin 12 is adapted to cooperate with the tenons of the third series of tenons 17 of the male connector element 9. The removable pin 12 illustrated has substantially a cylindrical shape with a shoulder. The shoulder allows precise positioning of the removable pin 12. In addition, the removable pin 12 illustrated is hollow for the passage of a tool allowing its introduction, and / or for the operation of the locking ring 11, for example by means of a maneuvering bar.
    FIG. 4 illustrates, in a nonlimiting manner, a male connector element 9 for the embodiment of FIG. 3. The male connector element 9 is a substantially cylindrical part, comprising a first end 20 intended to be fixed to an element main tube, and a second end 19, intended to be fitted into a female connector element. The male connector element 9 comprises, on its outer face, a third series of tenons consisting of two rows of pins 17A and 17B. Row 17A is the most centrally located row of the connector. According to the illustrated embodiment, each row of tenons 17A, 17B comprises four studs having an angular range of 45 °. The two rows of tenons 17A, 17B are inscribed in identical diameters. In this way, the insertion and locking in the locking ring (and in reverse the unlocking and withdrawal) are allowed by a combination of two translations and two rotations. In addition, the circumferential distributions of the tenons of the rows 17A, 17B are alternated: the tenons of the row 17A face the (are aligned with) intervals between two tenons of the row 17B and vice versa.
    FIG. 5 illustrates, in a nonlimiting manner, a female connector element 8 for the embodiment of FIG. 3. The female connector element 8 is a substantially cylindrical part, comprising a first end 21 intended to be fixed to an element main tube, and a second end 22, for interlocking a male connector element. The female connector element 8 comprises, on its outer face, a fourth series of tenons consisting of two rows of studs 18A and 18B. Row 18A is the most centrally located row of the connector. According to the illustrated embodiment, each row of pins 18A, 18B comprises four pins having an angular range of 45 °. The two rows of posts 18A, 18B are inscribed in different diameters. In this way, the insertion and locking (and inverted, unlocking and removal) in the locking ring are allowed by a single translation. In addition, the circumferential distributions of the tenons of the rows 18A, 18B are alternated: the tenons of the row 18A face the (are aligned with) intervals between two tenons of the row 18B and vice versa.
    FIG. 6 illustrates, in a nonlimiting manner, in a sectional view, a locking ring 11 for the embodiment of FIG. 3. The locking ring 11 is a substantially cylindrical piece. The locking ring 11 comprises, on its inner surface, a first series of tenons 15 and a second series of tenons 16 (the tenons of the first and second series are shown schematically: the dimensions are not respected). The first set of pins 15 is adapted to cooperate with the third set of tenons of the male connector element. The second series of tenons 16 is adapted to cooperate with the fourth series of pins of the female connector element. According to the illustrated embodiment, each series of tenons 15, 16 comprises two rows of tenons 15A, 15B and 16A, 16B. The rows 15A and 16A are the rows of tenons most in the center. Each row of tenons has four studs having an angular range of 45 °. In the illustrated example, the tenons of the rows of central tenons 15A, 16A are inscribed in diameters smaller than the diameters of the rows of external tenons 15B, 16B. However, to cooperate with the pins of the male connector element illustrated in Figure 4, the rows 15A, 15B of the first series can be inscribed in identical diameters. In addition, the circumferential distributions of the tenons of the rows 15A, 15B are alternated: the tenons of the row 15A face the (are aligned with) intervals between two tenons of the row 15B and vice versa. In the same way, the circumferential distributions of the tenons of the rows 16A, 16B are alternated: the tenons of the row 16A face the (are aligned with) intervals between two tenons of the row 16B and vice versa. In addition, for the illustrated embodiment, the circumferential distributions of the tenons of the first and third series are symmetrical with respect to a radial plane located between the first and third series of tenons: the tenons of the row 15A face (are aligned with ) to the tenons of the row 16A, and the tenons of the row 15B face (are aligned with) to the tenons of the row 16B.
    When the riser is provided with at least one auxiliary line, the male and female connector elements may comprise means for guiding the auxiliary tube elements. These guide means may be a flange (for example formed by an enlargement of the diameter of the male and female connector elements), a support (which may for example be fixed on the male and female connector elements), a guide plate (which may for example be attached to the male and female connector elements) out any similar means. The flange, the support, and the plate may comprise at least one orifice for the passage of the auxiliary tube elements.
    For this embodiment, the locking ring is disposed between the main tube member and the auxiliary tube members. The locking ring is positioned on the outer surface of the male and female connector members, and the auxiliary tube member is located outside the locking ring. In other words, the distance between the axis of the auxiliary tube element and the axis of the main tube is greater than the sum of the outer radius of the locking ring and the radius of the auxiliary pipe element. The locking ring has a diameter smaller than the peripheral diameter (the largest diameter) of the male and female connector elements provided with guide means.
    The connector according to the invention can be provided in such a way that the auxiliary tube element can have a relative movement with respect to the main tube element. For this, the two auxiliary tube elements can be mounted in sliding pivot connection or in sliding connection in the guide means (for example in a support on one side in a guide plate of the other). In the present application, a sliding pivot connection designates a connection which links a first solid to a second solid, the first solid being able to translate relative to the second solid in the direction of an axis, and the first solid that can pivot relative to the second solid. solid around this same axis. Thus, the auxiliary pipe element is slidable and pivotable in its axial direction relative to the main pipe, the auxiliary pipe element not being free of movement in the radial and tangential directions. In the present application, a sliding bond designates a bond which links a first solid to a second solid, the first solid being able to translate relative to the second solid in the direction of an axis. Thus, the auxiliary pipe element can slide in its axial direction relative to the main pipe.
    Alternatively, the connector according to the invention may be provided such that the auxiliary tube member can have no relative movement with the main tube member. For this, the two auxiliary tube elements may be integrally fixed in the guide means, for example in the two flanges. Thus, the axial stresses can be distributed in the main line and the auxiliary lines.
    Alternatively, the connector according to the invention can be provided so that, on one side, the auxiliary tube element can have no relative movement with the main tube element, and that, on the other side , the auxiliary tube member may have relative movement with the main tube member. For this, the auxiliary tube element may be integrally attached to a first guide means, for example a flange, and be in sliding pivot connection with a second guide means, for example a flange. The relative movement distance can be limited, for example by a clearance adjustment means. In other words, the riser section comprises at each of its ends connecting means, shown diagrammatically in FIG. one side axially linking an auxiliary pipe element 7 to the main pipe 6 and on the other side forming the sliding pivot connection between the auxiliary pipe element 7 and the main pipe 6.
    For this latter embodiment, the recess connection between the auxiliary pipe element and the main pipe element is formed at the female connector element, and the sliding pivot connection between the auxiliary pipe element and the main pipe element is made at the male connector element. Alternatively, the connection between the auxiliary pipe element and the main pipe element is formed at the male connector element, and the sliding pivot connection between the auxiliary pipe element and the main pipe element is performed at the female connector element.
    The auxiliary tubes are subjected to axial compression forces generated by the internal / external pressure difference which generates a "bottom effect" which is applied to the tube ends (for example the auxiliary lines may be subjected to pressures of the order of 1034 bar or 15000 psi). Under these pressures, the elements of the main tube lengthen and the elements of the auxiliary tubes are shortened until the game is zero. When the game becomes zero, all the lines lengthen identically. The elements of the main tube are likely to lengthen because they must support all or partially, on the one hand the weight of the riser and the weight of the drilling mud, and on the other hand, the tension forces imposed to the riser to keep it substantially vertical. In general, the main tube elements at the top of the riser, that is to say close to the sea surface, undergo the maximum tension forces, so the maximum elongation. The elements of the auxiliary tubes are likely to shorten under the effect of the difference between the internal pressure and the external pressure due to the fluid they contain. Indeed, the fluid applies a pressure on the ends of the auxiliary tube elements by imposing compression forces on the auxiliary tube elements. In addition, the radial deformation of the tube due to the difference between the internal pressure and the external pressure causes a shortening of the tube. In general, the elements at the bottom of the riser, that is to say near the seabed, undergo the maximum internal / external pressure difference, thus the maximum shortening.
    As long as the clearance is positive, the auxiliary tube element and the main tube element at the same height can vary in length independently of one another. On the other hand, when the clearance J becomes zero, that is to say when the game adjustment means is in contact with the flange, the auxiliary tube element and the corresponding main tube element 6 form a hyperstatic assembly: the auxiliary tube element is integral with the main tube element on the one hand at fastening means, and on the other hand at the stop which is in contact with the flange. As a result, the main tube element induces tensioning forces in the auxiliary tube element, and vice versa.
    Thus, these connections make it possible to distribute the tensioning forces applying to each of the sections of the riser, between the main tube 6 and the auxiliary pipe elements. The integration according to the invention via the introduction of the game makes it possible to increase the contribution of the main tube and consequently to reduce the axial forces in the peripheral lines. The reduction of the axial forces in the peripheral lines thanks to this integration has a benefit on the dimensioning of the end pieces and on the dimensioning of the thicknesses of the auxiliary tubes.
    Advantageously, the game is chosen according to the length of the section, indeed the deformations of the different lines depends on the length thereof. For a typical 75 or 90 ft (22.86 m and 27.43 m) riser section, the clearance can be adjusted between 0 and 1.5 inches (0 and about 38.1 mm). Preferably, the clearance can be selected between 0.1 and 1 inch, (2.54 and 25.4 mm) for optimum distribution of forces in the lines, to cause a decrease in the mass of the riser. Alternatively, the clearance can be selected between 0.1 and 0.25 inches (2.54 and 6.35 mm). Alternatively, the clearance may be between 0.25 and 1 inch (6.35 mm and 25.4 mm). A preferred solution with a good compromise is a clearance of about 0.5 inches (12.7 mm) or an inch (25.4 mm).
    In order to facilitate the assembly and to avoid problems of locking of the pin in case of wear, at least one axial clearance can be achieved between a connector element and the locking ring. Preferably, the axial clearance is strictly positive.
    According to one embodiment of the invention, an axial clearance is formed between each connector element and the locking ring. Thus, the problems related to the wear of the tenons can be avoided, which facilitates the manipulation of the locking ring. The two axial sets can be identical or distinct. The axial clearances are distributed in the connector as and when mounting steps, locking, unlocking, powering the connector. For example, during assembly, there may be axial play between the tenons cooperating with each other, and once the connector is locked and under tension, there may be axial play between the ends of the two connector elements.
    Each axial play, strictly positive, may be between 0.5 and 30 mm, and preferably between 0.5 and 10 mm. Beyond 30 mm, the technical effect relating to the avoidance of blocking problems remains present, however, the bulk increases.
    FIG. 7 schematically illustrates, and in a nonlimiting manner, the axial clearances that may exist within the connector in a locked position of the connector. This figure is an enlargement at the contact zone between the male and female connector elements, in a view similar to FIG. 3. A first axial clearance J1 is formed between the male connector element 9 and the locking ring 11. A second axial clearance J2 is formed between the female connector element 8 and the locking ring 11. The two axial sets may be identical, and may for example be about 1, 2, 3, 4 or 5 mm.
    In addition, according to a design of the connector, the ring may comprise means for limiting the rotation of the ring, for example stops, these means limiting a rotation of the locking ring for an angle equal to the angular range of the tenons. .
    In addition, according to a characteristic of the invention, the connector may comprise locking means of the locking ring in at least one position, in particular in the locked position or in the unlocked position. Locking means of the locking ring prevent undesired unlocking of the locking ring.
    According to one embodiment of the invention, the auxiliary tube elements are tubes shrunk by reinforcing threads, such as glass, carbon, or aramid fibers embedded in a polymer matrix. Thus, the resistance and the weight of the auxiliary lines are optimized. Indeed, the present invention is particularly suitable for the fretted auxiliary tube elements which have the advantage of reducing the thickness of steel and therefore the weight of the riser. The disadvantage of hooping to have a lower stiffness in bending is compensated by the clearance that limits the buckling of the auxiliary lines. Alternatively, the main tube elements and auxiliary tubes may be composed of metal alloy, for example an aluminum alloy or titanium alloy.
    According to a design of the invention, the locking ring may comprise handling means which are external to the locking ring. These handling means make it possible to rotate the locking ring. For example, the handling means may be a manipulation bar. According to one design, the handling means can be inserted into a pawn.
    In addition, the present invention relates to a riser, comprising at least two riser sections assembled by a connector as described above. The connector may be made according to any combination of the embodiments described above: plurality of removable pins, plurality of rows of tenons, rows of pins inscribed on identical or different diameters, axial clearances ...
    In addition, the present invention relates to the use of such a riser (with any of the above-described combinations of embodiments) to perform a drilling operation at sea, for the reconditioning of a well at sea ( "Work-over"), to produce an offshore oil effluent ...
    Furthermore, the present invention relates to a method of assembling two column sections by means of a connector according to the invention. For this process, the following steps can be carried out: a) inserting the locking ring into a first main tube element, in particular the male connector element or the female connector element, thus the first main tube element is positioned in the lock ring without being locked; b) inserting at least one removable pin into the locking ring, thus the first main tube element is positioned in the locking ring, being locked in translation, and still has a rotational movement, so it is not Locked ; c) inserting a second main tube member into the locking ring, particularly the male or female connector member, so as to engage the male connector member in the female connector member, whereby the second main tube member is positioned in the lock ring without being locked; and d) locking the locking ring, by rotation of the locking ring, this single rotation locks the two connector elements which no longer have relative movements with respect to the locking ring.
    For step d), during locking, the rotation of the ring engenders the respective cooperation of the first and third sets of tenons, and second and fourth sets of tenons. The rotation allowing the simultaneous locking of the two bayonet-type connections is a rotation of an angle corresponding to the angular range of the tenons. For example if the tenons have an angular range of 36 °, then the locking rotation is a rotation of 36 °.
    For step b), the locking in axial translation of the first main tube element relative to the locking ring is achieved: - in a first axial direction by the contact of the peg (s) removable (s) with the tenons of the connector element, and - in the second axial direction: o by the contact of the tenons of the locking ring with the tenons of the connector element in case of plurality of rows of pins inscribed in the same diameter, or o by gravity, which prevents the locking ring from translating upwards when the locking ring is suspended.
    The insertion steps consist in placing the relevant connector element in the locking ring, so that a single subsequent rotation can allow locking of the connector.
    In some cases, the insertion steps correspond to a single relative translational movement of the ring relative to the connector element. This is the case, for example, when the series of tenons concerned comprises only one row of tenons, or when the series of tenons concerned comprises a plurality of rows of studs inscribed in different diameters. This translation makes it possible to put in position the tenons for the blocking of the bayonet connection.
    In other cases, the insertion steps correspond to a combined movement comprising a first translation step, followed by a first rotation and followed by a second translation, it is about relative movements between the locking ring and the connector element concerned. This is for example the case, when the series of tenons concerned comprises a plurality of rows of studs inscribed in identical diameters. The first two relative movements are used to pass a first row of tenons. The last translation step makes it possible to position the tenons for blocking the bayonet connection.
    According to one embodiment of the invention, for which several pins are mounted to cooperate with the tenons of the male connector element, and for which the first and the third series of tenons comprise two rows of pins inscribed in identical diameters, and the second and fourth sets of tenons comprise two rows of studs inscribed in different diameters, the method may comprise the following steps: a) inserting the male connector element in the locking ring, by means of a first translation, a first rotation and a second translation; b) the removable pins are inserted into the locking ring; c) inserting the female connector element in the locking ring, by a single translation, so as to fit the male connector element in the female connector element; and d) locking the locking ring by rotation of the locking ring.
    In addition, the present invention relates to a method of disassembling two column sections by means of a connector according to the invention. For this method, the following steps can be carried out: a) the locking ring is unlocked, by rotation of the locking ring, this single rotation unlocks the two connector elements which may have relative movements with respect to the locking ring; lock; b) removing a second main tube element from the locking ring, in particular the male or female connector element, so as to release the interlocking of the male connector element of the female connector element, thus, the second main tube member is extracted from the locking ring, while the other main tube member remains unlocked but locked in translation in the locking ring, in particular by at least one removable peg; c) removing at least one removable pin in the locking ring, thus the first main tube member is positioned in the locking ring, being unlocked and free movement; and d) removing the first main tube member in the locking ring, in particular the male connector member or the female connector member, thereby removing the first main tube member from the locking ring.
    For step a), during unlocking, the rotation of the ring releases the respective cooperation of the first and third sets of tenons, and second and fourth sets of tenons. The rotation allowing the simultaneous unlocking of the two bayonet type connections is a rotation of an angle corresponding to the angular range of the tenons. For example, if the tenons have an angular range of 36 °, then the unlocking rotation is a 36 ° rotation.
    The removal steps consist in extracting the relevant connector element from the locking ring, from a position where the connector element is positioned in the locking ring.
    In some cases, the withdrawal steps correspond to a single relative translational movement of the ring relative to the connector element. This is the case, for example, when the series of tenons concerned comprises only one row of tenons, or when the series of tenons concerned comprises a plurality of rows of studs inscribed in different diameters. This translation releases the tenons of the bayonet connection.
    In other cases, the insertion steps correspond to a combined movement comprising a first translation step, followed by a first rotation and followed by a second translation, it is about relative movements between the locking ring and the connector element concerned. This is for example the case when the series of tenons concerned comprises a plurality of studs inscribed in identical diameters. The first step of translation makes it possible to disengage the tenons of the second series of tenons. The last two relative movements are used to pass a first row of tenons.
    According to one embodiment of the invention, for which several pins are mounted to cooperate with the tenons of the male connector element, and for which the first and the third series of tenons comprise two rows of pins inscribed in identical diameters, and the second and fourth series of tenons comprise two rows of studs inscribed in different diameters, the method comprises the following steps: a) unlocking the locking ring, by rotation of the locking ring; b) removing the female connector element from the locking ring, by a single translational movement so as to release the interlocking of the male connector element in the female connector element; c) remove the removable pins in the locking ring; and d) removing the male connector member from the locking ring by a combined movement of a first translation, a first rotation and a second translation.
    For the embodiment, for which two axial clearances are provided on either side between the connector elements and the locking ring. The distribution of the axial clearances is illustrated in FIGS. 8a to 8d for different stages of the assembly. These figures are sectional views similar to the sectional view of FIG. 3, and illustrate steps of assembling the male connector element 9 in the female connector element 9 by means of a locking ring 11 and removable pawns 12.
    The locking of the connector can be achieved by the following operations: 1. Approach phase (Figure 8a): interlocking of the male part 9 in the female part 8. The teeth of the locking ring 11 pass between those of the element female 8. 2. The nesting continues (Figure 8b), the locking ring 11 comes into contact on the upper part of the female element 8. At this stage, an axial play J1 exists between the male connector element 9 and the female connector element 8, the end of the female connector element 8 is in contact C with the locking ring, while an axial clearance J2 exists between the tenons of the second 16 and fourth series 18 of pins, c that is between the central rows 16A and 18A and between the outer rows 16B and 18B of the second and fourth series. 3. At the end of the interlocking (FIG. 8c), the male element 9 comes into contact on the upper part of the female element 8. At this stage, an axial clearance J1 exists between tenons of the first 15 and third 17 series of tenons (that is to say between the central rows 15A and 17A and between the outer rows 15B and 17B of the second and fourth series), the ends of the two connector elements are in contact C, while an axial play J2 exists between the tenons of the second 16 and fourth series 18 tenons (that is to say between the central rows 16A and 18A and between the outer rows 16B and 18B of the second and fourth series). At the end of this step, the connector is ready to be locked. 4. The rotation of the ring for locking (Figure 8d) comes to coincide the four rows of teeth. This is no longer likely to be impeded because the sliding surface is located on a low demand area. At the end of the locking, the tensioning of the rising conne comes to put the teeth of the two bayonet systems in contact. Thus, a contact C is made at the tenons of the four sets of tenons, and an axial clearance corresponding to the sum J1 + J2 exists between the ends of the male connector elements 9 and female 8.
    For this example, the axial clearances J1 and J2 can be different or identical and can be 1,2, 3, 4 or 5 mm.
    The device according to the invention offers an interesting solution for quickly and simply mounting a riser whose tensioning forces are distributed between the auxiliary tube elements and the main tube. Indeed, the connection of a riser section to another riser section is performed in a single operation by means of the rotation of the locking ring. This connection makes it possible to connect and seal the main pipe element of one section with that of the other section and simultaneously to connect and seal the auxiliary pipe elements of one of the sections. with those of the other section.
    For the embodiment, for which the riser comprises at least one auxiliary pipe, the compact connector according to the invention makes it possible to minimize the bending forces in the flanges, and thus to reduce the dimensions of the flanges and to lighten the weight connectors. Furthermore, the fact that the ring is positioned between the main tube element and the auxiliary tube elements makes it possible to increase the resistance of the connector. Indeed, the ring maintains the flanges and prevents their flexions. In addition, this positioning makes it possible to reduce the problem of interference of the connections of the auxiliary lines, since the bending moments generated by the off-axis axial forces are of opposite signs. In addition, in the locked position, the tenons of the ring are engaged with the tenons of the female connector element which are positioned on the solid part of the female connector element.
    权利要求:
    Claims (25)
    [1" id="c-fr-0001]
    1) Connector for joining two riser sections, having a first main tube member (6) extended by a male connector member (9), a second main tube member (6) extended by a female connector member (8) , the male connector element (9) fitting into said female connector element (8) for connecting said two main tube elements (6), said connector comprising locking means of said assembly comprising a locking ring (11) arranged around said main tube members (6), said locking ring (11) juxtaposing the zone of engagement of said male connector member (9) in said female connector member (8), said locking ring (11) comprising a first (15) and a second (16) series of tenons on its inner surface, and said male (9) and female (8) connector members respectively having on their outer face a third (17) and a fourth (18) series of tenons cooperating respectively with said first (15) and second (16) series of tenons, characterized in that said locking means further comprise at least one removable peg (12). ) arranged in said locking ring (11) and cooperating with a tenon of said third (17) or said fourth (18) series of tenons for locking said locking ring (11) in translation relative to said male connector element (9). ) or female (8), and in that the tenons of the first (15) and second (16) series of tenons are projecting on identical angular ranges.
    [0002]
    2) connector according to claim 1, wherein each series of tenons (15, 16, 17, 18) comprises at least one row of tenons, and preferably two rows of tenons.
    [0003]
    3) connector according to claim 2, wherein said removable pin (12) is arranged between each tenon of a row of pins of said third (17) or said fourth (18) series of tenons.
    [0004]
    4) Connector according to one of claims 2 or 3, wherein said removable pin (12) is arranged at said row of tenons closest to the center of said locking ring (11) of said first (15A) or second series (16A) of tenons.
    [0005]
    5) Connector according to one of claims 2 to 4, wherein the circumferential distributions of said tenons of two consecutive rows of tenons of the same series of pins are alternated.
    [0006]
    6) connector according to one of claims 2 to 5, wherein at least one row of tenons of a series of tenons is inscribed in a different diameter of another row of said series of tenons.
    [0007]
    7) Connector according to one of claims 2 to 6, wherein the rows of tenons of at least one series of pins are inscribed in identical diameters.
    [0008]
    8) Connector according to one of the preceding claims, wherein said removable pin (12) is threaded and is arranged in said locking ring (11) by screwing.
    [0009]
    9) connector according to one of the preceding claims, wherein said series of tenons (15, 16, 17, 18) comprise at least three pins, and preferably at least four tenons.
    [0010]
    10) Connector according to one of the preceding claims, wherein said male (9) and female (8) connector elements are provided with guide means for the respective passage of a first and a second auxiliary tube element (7). ).
    [0011]
    11) Connector according to claim 10, wherein said auxiliary tube elements (7) are integrally attached to said guide means.
    [0012]
    12) Connector according to one of claims 1 to 9, wherein an auxiliary tube member (7) is integral with one of said guide means and the other auxiliary tube member (7) is connected by a sliding connection with the other of said guide means, said slidable connection allowing relative translational movement between said main tube member (6) and said auxiliary tube member (7) over a limited distance.
    [0013]
    13) Connector according to one of claims 1 to 9, wherein said two auxiliary tube elements (7) are connected by a sliding connection with said guide means.
    [0014]
    14) Connector according to one of the preceding claims, wherein a first axial play (J1) is provided between said first set of tenons (15) and said third set of tenons (17), and a second axial clearance (J2) is provided between said second set of tenons (16) and said fourth set of tenons (18).
    [0015]
    15) A connector according to claim 14, wherein said first and second axial clearances (J1, J2) are strictly positive and are between 0.5 and 30 mm, preferably between 0.5 and 10 mm.
    [0016]
    16) riser comprising at least two riser sections (4) assembled by a connector (5) according to one of the preceding claims.
    [0017]
    17) Method of assembling two sections (4) riser by means of a connector (5) according to one of claims 1 to 15, characterized in that the following steps are carried out: a) inserting a first main tube element (6) in said locking ring (7); b) inserting said removable peg (12) into said locking ring (11); c) inserting a second main tube member (6) into said locking ring (11); and d) locking said locking ring (11).
    [0018]
    The method of claim 17, wherein the locking step is carried out by relative rotation of said locking ring (11) with respect to said main tube members (6).
    [0019]
    19) Method according to one of claims 17 or 18, wherein at least one insertion of at least one main tube element (6) in said locking ring (11) is implemented by a relative translation of said ring locking (11) with respect to said main tube member (6).
    [0020]
    20) Method according to one of claims 17 to 19, wherein at least one insertion of at least one main tube element (6) in said locking ring (11) is implemented by at least a first translation, a first rotation and a second relative translation of said locking ring (11) with respect to said main tube member (6).
    [0021]
    21) A method of disassembling two sections (4) riser by means of a connector (5) according to one of claims 1 to 15, characterized in that the following steps are carried out: a) it unlocks said ring locking (11); b) removing a first main tube member (6) from said locking ring (11); c) removing said removable peg (12) from said locking ring (11); and d) removing a second main tube member (6) from said locking ring (11).
    [0022]
    22) The method of claim 21, wherein the unlocking step is carried out by relative rotation of said locking ring (11) relative to said main tube members (6).
    [0023]
    23) Method according to one of claims 21 or 22, wherein at least a withdrawal of at least one main tube member (6) of said locking ring (11) is implemented by a relative translation of said ring locking (11) with respect to said main tube member (6).
    [0024]
    24) Method according to one of claims 21 to 23, wherein at least a withdrawal of at least one main tube element (6) of said locking ring (11) is implemented by a first translation, a first relative rotation and translation of the locking ring (11) relative to said main tube member (6).
    [0025]
    25) Use of a riser according to claim 16 for performing a drilling operation, or reconditioning wells or production at sea.
    类似技术:
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    FR2928958A1|2009-09-25|Boring and exploitation system for oil reservoir in sea, has connectors situated above application point and comprising pre-stress exertion units to exert axial pre-stress on ring, and other connectors situated below application point
    同族专利:
    公开号 | 公开日
    EP3390767A1|2018-10-24|
    CN108368733A|2018-08-03|
    CN108368733B|2020-12-15|
    BR112018010850A2|2018-11-27|
    US20180355676A1|2018-12-13|
    WO2017102219A1|2017-06-22|
    FR3045707B1|2018-01-26|
    US10648244B2|2020-05-12|
    EP3390767B1|2020-02-19|
    引用文献:
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    US4280719A|1978-08-03|1981-07-28|Institut Francais Du Petrole|Connector with rotatable locking ring, particularly for a riser used in offshore oil exploration and production|
    FR2928958A1|2008-03-19|2009-09-25|Inst Francais Du Petrole|Boring and exploitation system for oil reservoir in sea, has connectors situated above application point and comprising pre-stress exertion units to exert axial pre-stress on ring, and other connectors situated below application point|
    WO2015169560A1|2014-05-05|2015-11-12|IFP Energies Nouvelles|Section of a riser provided with a locking ring arranged between the main tube and the auxiliary tube|
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    FR2925105B1|2007-12-18|2010-01-15|Inst Francais Du Petrole|UPLINK COLUMN WITH FLANGED AUXILIARY PIPES AND CONNECTIONS IN BAIONNETTE.|
    AU2009245441B8|2008-05-04|2012-03-15|Aquatic Company|Aluminum riser assembly|
    FR2937676B1|2008-10-29|2010-11-19|Inst Francais Du Petrole|METHOD FOR LIFTING A UPRIGHT COLUMN WITH OPTIMIZED WEAR|
    FR2956693B1|2010-02-23|2012-02-24|Inst Francais Du Petrole|UPRINK CONNECTOR WITH FLANGES, INTERIOR LOCKING RING, AND OUTDOOR LOCKING RING|
    FR2956694B1|2010-02-23|2012-02-24|Inst Francais Du Petrole|UPLINK COLUMN CONNECTOR WITH FLANGES AND EXTERNAL LOCKING RING|
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    FR3063513B1|2017-03-03|2019-04-12|IFP Energies Nouvelles|METHOD FOR EVOLVING A CONNECTOR ASSEMBLING TWO RUNNERS OF AN UPPER COLUMN USING A REMOVABLE LOCKING RING|
    US20190301260A1|2018-03-28|2019-10-03|Fhe Usa Llc|Remotely operated fluid connection|
    FR3089245B1|2018-12-04|2020-11-20|Ifp Energies Now|Connector for assembling two riser sections with internal locking ring|
    法律状态:
    2016-12-12| PLFP| Fee payment|Year of fee payment: 2 |
    2017-06-23| PLSC| Publication of the preliminary search report|Effective date: 20170623 |
    2017-12-14| PLFP| Fee payment|Year of fee payment: 3 |
    2019-12-24| PLFP| Fee payment|Year of fee payment: 5 |
    2020-12-29| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1562604A|FR3045707B1|2015-12-17|2015-12-17|CONNECTOR FOR ASSEMBLING TWO ROUND COLUMNS WITH EXTERNAL LOCKING RING AND REMOVABLE PINS|
    FR1562604|2015-12-17|FR1562604A| FR3045707B1|2015-12-17|2015-12-17|CONNECTOR FOR ASSEMBLING TWO ROUND COLUMNS WITH EXTERNAL LOCKING RING AND REMOVABLE PINS|
    US16/061,204| US10648244B2|2015-12-17|2016-11-15|Connector for assembling two riser segments, comprising an external locking ring and removable pins|
    PCT/EP2016/077751| WO2017102219A1|2015-12-17|2016-11-15|Connector for assembling two riser segments, comprising an internal locking ring and removable pins|
    EP16795359.5A| EP3390767B1|2015-12-17|2016-11-15|Connector for assembling two riser segments, comprising an internal locking ring and removable pins|
    BR112018010850-2A| BR112018010850A2|2015-12-17|2016-11-15|connector for joining two riser segments with internal locking ring and detachable tops|
    CN201680074471.4A| CN108368733B|2015-12-17|2016-11-15|Connection for assembling two riser sections comprising an inner locking ring and a removable pin|
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