WO2022184992A1 - Segmented threaded tubular element - Google Patents

Segmented threaded tubular element Download PDF

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Publication number
WO2022184992A1
WO2022184992A1 PCT/FR2022/050297 FR2022050297W WO2022184992A1 WO 2022184992 A1 WO2022184992 A1 WO 2022184992A1 FR 2022050297 W FR2022050297 W FR 2022050297W WO 2022184992 A1 WO2022184992 A1 WO 2022184992A1
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WO
WIPO (PCT)
Prior art keywords
segment
tubular element
element according
sealing surface
distal end
Prior art date
Application number
PCT/FR2022/050297
Other languages
French (fr)
Inventor
Pierre Martin
Jean-Guillaume Besse
Nicolas BAUDET
Original Assignee
Vallourec Oil And Gas France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vallourec Oil And Gas France filed Critical Vallourec Oil And Gas France
Publication of WO2022184992A1 publication Critical patent/WO2022184992A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
    • 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
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Definitions

  • the invention relates to the components, threaded tubular elements and seals resulting from the assembly of two threaded tubular elements present in the tubular components used in the field of oil and gas, geothermal energy, energy, and more particularly to a method of manufacturing such an element.
  • component means any tube or accessory used to drill or exploit a well and comprising at least one connection or connector or even a threaded tubular element, and intended to be assembled by threading to another component to constitute with this other component a tubular threaded joint.
  • the component may for example be a tube of relatively great length (in particular about ten meters in length), or else a tubular sleeve of a few tens of centimeters in length, or even an accessory of these tubular elements.
  • such an accessory can be a suspension device or "hanger”, a section change part or “cross-over”, a safety valve, a drill rod connector or “tool joint”, “ sub”, and the like...
  • [3]Tube joints therefore consist of at least two threaded tubular elements. These threaded tubular elements are complementary allowing the connection of two tubular elements - one male (“Pin”) and the other female (“Box”) - between them. There is therefore a male threaded tubular element and a female threaded tubular element.
  • the so-called premium or semi-premium threaded tubular elements generally comprise at least one abutment surface.
  • a first abutment may be formed by two abutment surfaces of two threaded tubular elements, oriented substantially radially and configured so as to be in contact with each other after screwing tubular elements threaded together, therefore in the assembled state or in the assembled state and during compressive stresses on the tubular joint.
  • the stops generally have negative angles with respect to the main axis of the connections.
  • a first abutment surface may be located on the distal end of a threaded tubular member, or on the side of the thread(s) located opposite the distal end of the threaded tubular member.
  • Intermediate abutments are also known on joints comprising at least two levels of threads, an intermediate abutment surface being between the two threads of an element.
  • the so-called "premium” connections include sealing surfaces called sealing surfaces, at least one on the pin, and at least one corresponding on the box, intended to be brought into interfering contact when the pin and box connections are assembled with each other, so as to form a seal having a seal against liquids and/or gases.
  • the sealing surfaces must maintain a seal preventing the passage of liquids and/or gases when the connections are assembled together and during the use of the tubes comprising these connections assembled in a column, for example an oil well column , that is to say that the sealing function must be maintained in the widest possible spectrum of use, including when the joint is subjected to internal pressure or to external pressure, to compressive stresses or tensile stresses, at room temperature or at high temperature, this spectrum corresponding to an operating range of the joint.
  • sealing surfaces are designed to work in the elastic range of the material that constitutes them so as to maintain the quality of sealing under various successive stresses.
  • the present invention aims to solve this problem with a tubular element comprising a body, the body comprising a first surface on which a thread is provided, a second surface radially opposite the first surface, a sealing surface located on the first surface, said body being in a steel having a first elastic limit Ysl, the tubular element comprising a segment extending radially from the second surface in line with the sealing surface and having a second elastic limit Ys2 greater than the first yield strength Ysl.
  • the material supporting the sealing surface has improved rigidity, and the seal resulting from the assembly of such a tubular element with another tubular element has improved sealing performance under stresses.
  • the segment has a radial contact surface with the body in line with the sealing surface. With such radial contact the sealing surface is supported, in particular radially, both by the body and by the segment so that the segment actively participates in reinforcing the rigidity of the tubular element at the level of the surface of sealing, the tubular element thus having at the level of the sealing surface a satisfactory radial stiffness.
  • said segment has a second elastic limit Ys2 greater than the first elastic limit Ysl so as to reinforce the structural rigidity, typically the radial stiffness, of the tubular element at the right of said sealing surface.
  • the sealing surface of the tubular element is located axially between the thread and the distal end of the tubular element. The region towards the distal end generally being the region of lesser radial thickness of the threaded element, the effect of additional rigidity provided by the segment is stronger for such a location of the sealing surface.
  • the distal end may include an abutment surface and the segment extend axially to said abutment surface and include at least a portion of the abutment surface.
  • This makes it possible to increase the axial rigidity of the element from the abutment to the level of the sealing surface and to obtain a synergy between the segment, the abutment surface and the sealing surface.
  • the sealing surface has a reduced displacement when the seal is subjected to a compression force.
  • the length of the segment makes it possible to distribute the stresses exerted in the material around the sealing surface. More pressure can be exerted on the thrust bearing, which induces more contact pressure on the sealing surface via the segment.
  • the segment also makes it possible to improve sealing when the seal is subjected to a tensile force, the segment stiffening the end carrying the sealing surface.
  • the segment can have a radial thickness decreasing away from the distal end. This makes it possible to increase the contact surface between the segment and the body of the connection. This allows directing the forces transmitted by the abutment surface in a radial direction and in the direction towards the inside of the connection.
  • the segment can be attached to the body by additive manufacturing. This allows better control of the shape and adhesion of the segment to the body. This also makes it possible to dimensionally limit the heat-affected zone.
  • the segment has a radial thickness of at least 1.8 mm.
  • the segment (11) may have a thickness Ep greater than or equal to a minimum thickness Epmin such that:
  • GD is the body-to-lip inside diameter
  • JID is the lip inside diameter
  • PCD is the lip outside diameter at the sealing surface.
  • the segment may be located at a radial distance of at least 1.5 mm from the sealing surface. This ensures that the construction of the segment on the body does not influence the properties of the material adjacent to the sealing surface.
  • the segment may have an axial length of at least 4 mm.
  • the segment may have an axial length at least equal to an axial length of the sealing surface plus at least 4 mm, the sealing surface being the sealing surface in line with which the segment lies radially.
  • the segment does not include a recess arranged for the passage of fluid or gas, or a recess arranged to house a sensor.
  • the segment can be in a metal chosen from alloy steels, high alloy steels, cupro-nickel alloys, titanium alloys, ceramics, glass-ceramics, or copper, cupronickel, stellite, ferrochrome.
  • the segment can be in the same metal as the metal of the body. It is indeed possible to obtain different elastic limits with steels of the same nature.
  • the invention is also a method for obtaining a tubular element as described above, said method possibly comprising a step of producing the segment by a method chosen from among hardfacing methods, fusion methods by beam of electrons, laser melting processes on a metal powder bed or "selective laser melting", selective laser sintering processes, direct metal deposition processes or "Direct Energy Deposition”, Binder Projection Deposition or Deposition processes by Laser Projection, deposition processes by arc-wire additive manufacturing.
  • Figure 1 is a sectional view of one end of a tubular element according to a preferred embodiment of the invention and with a male end of the threaded tubular element;
  • Figure 2 is a partial sectional view of one end of a tubular element according to the invention in a first variation
  • Figure 3 is a partial sectional view of one end of a tubular element according to a second variant of the invention.
  • Figure 4 is a partial sectional view of one end of a tubular element according to another variant of the invention.
  • Figure 1 shows a preferred embodiment of the invention.
  • Figure 1 shows a partial sectional view of a tubular element (2) having a main axis (X) comprising a male end or connection, comprising a first surface (3) on which is provided a thread (5) which is here an external thread, a male sealing surface (10), a distal end (8).
  • the tubular element (2) comprises on the distal end (8) an abutment surface (9).
  • the tubular element comprises a body (4) in a first material, here a first steel having a first yield strength Ysl.
  • the thread (5), the sealing surface (10) are made in the body (4) and are therefore constituted by said first steel of first yield strength Ysl.
  • the thread (5) and the sealing surface (10) are generally obtained by machining in the body of the tubular element (2).
  • connections can also comprise several stages of threads, for example two stages of threads. Connections can also comprise additional sealing surfaces, for example a sealing surface located on the side of the external thread (5) which is opposite to the distal end (8), or even a sealing surface located between two thread stages.
  • the connections can also include an abutment surface located axially between the two thread stages. The connections may have no abutment surface.
  • the tubular element (2) of Figure 1 comprises a segment (11).
  • the segment (11) extends from a second surface (7) radially opposite the first surface.
  • the second surface here is an internal surface.
  • the axial location of the segment (11) is such that the segment (11) is located in line with the sealing surface (10).
  • the segment (11) extends on the one hand beyond the axial position of the sealing surface (10) on the side opposite the distal end (8), and the segment (11) extends on the other hand towards the distal end (8).
  • the segment (11) extends to the distal end (8).
  • the segment (11) is in a steel having a second yield strength Ys2.
  • This elastic limit is advantageously greater than the first elastic limit Ysl.
  • This greater rigidity is therefore obtained at the level of the sealing surface (10). Consequently, when, in use, the tubular element is subjected to stresses such as external pressure, bending, the end lip stiffened by the segment deforms less, and the sealing surface maintains a contact more long with a corresponding sealing surface on a corresponding tubular element.
  • the sealing performance of the connection is improved. This improved performance can be obtained without increasing the interference at the level of the sealing surfaces in contact in a joint formed of two connections, which makes it possible not to increase the risks of seizing when the connections are assembled.
  • the body (4) of the tubular element comprises a recess (14) formed on the second surface (7).
  • the segment (11) is located in the recess (14).
  • the segment can be added to the body (4) without the presence of a recess on the second surface (7), which can be advantageous when the material available at the end of the tubular element is too low, but which can have the disadvantage in certain cases to reduce the free internal diameter, which can be inconvenient for example for the passage of components inside the tubular element.
  • the segment (11) is an addition of material arranged to reinforce the structural rigidity of the end lip of a tubular element.
  • the highest limit of the Ys2 elastic limit of the segment makes it possible to reduce the bulk volume of added material.
  • the presence of a recess (14) in the body (4) and the positioning of the segment (11), in part or in whole, makes it possible to further reduce the size, and even to have no additional size.
  • the segment (11) can be made of a steel having the same chemical composition as the steel of the body (4) and which has a second limit of elasticity Ys2 nevertheless higher than the first elastic limit Ysl of the body, because of a distinct crystalline structure. This distinct crystal structure is achieved by heat treatment.
  • a very satisfactory method to date is to deposit material from the segment by a known additive manufacturing method, which makes it possible to deposit drops of molten material which undergo rapid cooling during deposition, which creates a steel with yield strength higher than that of the steel of the body (4) which is shaped by methods resulting in a longer cooling cycle.
  • the segment (11) can be made of a second steel with a different chemical composition from that of the first steel of the body (4), the second steel of the segment inherently having a higher elastic limit than the first body steel (4).
  • the material of the segment (11) is also deposited by an additive manufacturing process.
  • such a steel can be a Ferro 55 alloy from Boehler-Voestalpine, Deloro-Stellite-Kennametal, Carpenter, Erasteel, Hoganas.
  • the steel can be chosen from alloy steels, high alloys, cupro-nickel alloys, titanium alloys, ceramics, glass-ceramics, or copper, cupronickel, stellite, ferrochrome, having suitable elasticity limits for use on a tubular element.
  • the segment (11) of figure 1 must have a thickness of at least 1.8 mm.
  • thickness is meant the size of the profile of the segment measured radially.
  • the thickness is determined in line with the sealing surface in a radial direction.
  • a sealing surface having an axial length the thickness can be measured on any straight line in the radial direction and passing through a point on the sealing surface.
  • a segment (11) can be attached to tubular elements (2) of very variable sizes. The thickness of the segment can be adapted to these different sizes. The applicant has determined the preferred minimum and maximum thicknesses for a segment, thicknesses depending on the tubular element.
  • the segment (11) can have a thickness Ep greater than or equal to a minimum thickness Ep min such that:
  • Ysl is the elastic limit of the material of the body (4)
  • Ys2 the elastic limit of the material of the segment
  • GD is the diameter of the bottom of the recess (14)
  • JID is the internal diameter of the second surface in distal end
  • PCD is the diameter of the first surface at the sealing surface.
  • the thickness of the segment (11) can be limited to a thickness Ep less than or equal to a maximum thickness Epmax such that: [Math 5]
  • the segment (11) has a length measured axially of at least 4 mm. This makes it possible to obtain a stiffening effect of the lip at the level of the sealing surface, and to cover different positions of a sealing point when the tubular element is subjected to different stresses, the sealing surfaces in contact that can move relative to each other a certain distance.
  • the segment (11) has an axial length at least equal to the axial length of the sealing surface plus 4 mm in order to reinforce the stiffening effect.
  • the tubular element (20) of Figure 2 is similar to that of Figure 1, comprises a segment (21) located in line with a sealing surface (10), said segment (21) differing from the first embodiment in that the segment (11) does not extend to the distal end (8).
  • the segment (11) does not modify the nature of the abutment surface (29) of the distal end (28).
  • This embodiment is particularly suitable for modifying an existing tubular element, because it does not directly modify the functional surfaces such as the abutment surfaces, and thus their behavior during screwing is not or only slightly modified, and can reduce the need for certain requalifications of a product thus modified.
  • the segment (21) has an axial length of at least 4 mm.
  • the segment (21) has an axial length at least equal to the axial length of the sealing surface plus 4 mm. These minimum length values also apply to other embodiments.
  • the segment (21) is located in a recess (24) made in the second surface (7).
  • the segment (21) is completely contained within the recess (24).
  • the segment (21) can also be located partially outside the recess (24).
  • the tubular element (30) of Figure 3 comprises a body (4), the body (4) comprises a first surface (3) on which are provided a thread (5) and a sealing surface (10).
  • the tubular member includes a distal end (38), said distal end including an abutment surface (39).
  • An abutment surface is oriented substantially radially, is arranged to come into contact with a complementary abutment surface of a connection of a corresponding tubular element with which the tubular element (30) is assembled.
  • a segment (31) extends radially from a second surface (7) opposite the first surface (3), the segment (31) is located radially in line with the sealing surface (10), the segment (31) extends to the distal end (38) of the tubular member (30), and the segment entirely includes the abutment surface (39).
  • the segment (31) does not include the sealing surface (10).
  • the contact surface between the body (4) and the segment (31) is conical so as to increase the contact surface between the body (4) and the segment (31).
  • the section of this conical surface is such that its diameter increases towards the distal end, in this way the contact forces exerted on the abutment induce a better distribution of the stresses towards the sealing surface (10).
  • the second surface (7) includes a recess (34). Segment (31) is partially contained within recess (34).
  • the segment does not include any porosity or channel allowing the passage of gas or liquids.
  • the segment does not include a recess to house a sensor.
  • Figure 4 shows a portion of tubular element (40) of the embodiment of Figure 1 in the variant of a female connection.
  • the tubular element (40) of FIG. 4 comprises a first surface (43) comprises a body (4), a distal end (48), an abutment surface (49).
  • the body (4) comprising a thread (45), a sealing surface (50).
  • the tubular element (40) includes a segment (41).
  • the segment (41) extends from a second surface (47) radially opposite the first surface (43).
  • the second surface here is an outer surface.
  • the axial location of the segment (41) is such that the segment (41) is located in line with the sealing surface (50).
  • the segment (41) extends on the one hand beyond the axial position of the sealing surface (40) on the side opposite the distal end (48), and the segment (41) extends on the other hand towards the distal end (48).
  • the segment (41) extends to the distal end (48).
  • the segment (41) is located in a recess (44).
  • connection was obtained by modifying a state-of-the-art connection to incorporate a segment according to the first embodiment according to Figure 1, the segment being completely located in a recess.
  • the nominal connection diameter is 177.8 mm (7 inches)
  • the base steel is a PI 10 alloy according to API 5CT.
  • the segment is also made of PI 10 steel, added by additive manufacturing, more precisely by laser powder projection. Screwing tests and then tightness tests under stress were carried out with the parts produced.
  • a screwing test is a series of 10 assemblies/disassemblies. Leakage is tested using internal gas pressure and then external liquid pressure methods.
  • the invention also relates to a method for obtaining a threaded tubular element comprising a segment.
  • This method comprises the step of choosing a tubular element with a thread, optionally making a recess on the surface opposite to the surface on which the thread is located, then depositing material in the recess or on said opposite surface .
  • the deposition of material can be done according to a process chosen from reloading processes, electron beam fusion processes, laser fusion processes on a metal powder bed or "selective laser melting", selective laser sintering, direct metal deposition or “Direct Energy Deposition” processes, deposition processes by Binder Projection or Laser Projection Deposition, deposition processes by arc-wire additive manufacturing.
  • the tubular element can be machined at the distal end in order to produce an abutment surface.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Earth Drilling (AREA)
  • Dowels (AREA)

Abstract

The invention relates to a tubular element (2, 20, 30, 40) comprising a body (4), the body having a first surface (3, 43) on which a thread (5, 45) is formed, a second surface (7, 47) radially opposite the first surface (3, 43), and a sealing surface (10, 50) located on the first surface (3, 43), said body (4) being made from a steel having a first yield strength Ys1, the tubular element comprising a segment (11, 21, 31, 41) extending radially from the second surface (7, 47) in line with the sealing surface (10, 50) and having a second yield strength Ys2 greater than the first yield strength Ys1.

Description

Description Description
Titre de l’invention : Elément tubulaire fileté à segment Title of the invention: Threaded tubular element with segment
Domaine technique Technical area
[1]L’ invention concerne les composants, éléments tubulaires filetés et joints résultants de l’assemblage de deux éléments tubulaires filetés présents dans les composants tubulaires utilisés dans le domaine du pétrole et du gaz, de la géothermie, de l' énergie, et plus particulièrement à une méthode de fabrication d’un tel élément. [1] The invention relates to the components, threaded tubular elements and seals resulting from the assembly of two threaded tubular elements present in the tubular components used in the field of oil and gas, geothermal energy, energy, and more particularly to a method of manufacturing such an element.
Arrière-plan technologique Technology background
[2] On entend ici par “composant” tout tube ou accessoire utilisé pour forer ou exploiter un puit et comprenant au moins une connexion ou connecteur ou encore élément tubulaire fileté, et destiné à être assemblé par un filetage à un autre composant pour constituer avec cet autre composant un joint fileté tubulaire. Le composant peut être par exemple un tube de relativement grande longueur (notamment d’environ une dizaine de mètres de longueur), ou bien un manchon tubulaire de quelques dizaines de centimètres de longueur, ou encore un accessoire de ces éléments tubulaires. De manière non limitative, un tel accessoire peut être un dispositif de suspension ou « hanger », une pièce de changement de section ou « cross-over », une vanne de sécurité, un connecteur pour tige de forage ou « tool joint », « sub », et analogues... [2] Here, “component” means any tube or accessory used to drill or exploit a well and comprising at least one connection or connector or even a threaded tubular element, and intended to be assembled by threading to another component to constitute with this other component a tubular threaded joint. The component may for example be a tube of relatively great length (in particular about ten meters in length), or else a tubular sleeve of a few tens of centimeters in length, or even an accessory of these tubular elements. In a non-limiting way, such an accessory can be a suspension device or "hanger", a section change part or "cross-over", a safety valve, a drill rod connector or "tool joint", " sub", and the like...
[3]Les joints tubulaires sont donc constitués d’au moins deux éléments tubulaires filetés. Ces éléments tubulaires filetés sont complémentaires permettant le raccordement de deux éléments tubulaires - l’un mâle (« Pin ») et l’autre femelle (« Box ») - entre eux. Il y a donc un élément tubulaire fileté mâle et un éléments tubulaire fileté femelle. Les éléments tubulaires filetés dits premium ou semi-premium comportent généralement au moins une surface de butée.[3]Tube joints therefore consist of at least two threaded tubular elements. These threaded tubular elements are complementary allowing the connection of two tubular elements - one male ("Pin") and the other female ("Box") - between them. There is therefore a male threaded tubular element and a female threaded tubular element. The so-called premium or semi-premium threaded tubular elements generally comprise at least one abutment surface.
Une première butée peut être formée par deux surfaces de butée de deux éléments tubulaires filetés, orientées de façon sensiblement radiale et configurées de façon à être en contact l’une avec l’autre à l’issue du vissage des éléments tubulaires filetés entre eux, donc à l’état assemblé ou à l’état assemblé et lors de sollicitations de compression sur le joint tubulaire. Les butées ont généralement des angles négatifs par rapport à l’axe principal des connexions. Une première surface de butée peut être située sur l’extrémité distale d’un élément tubulaire fileté, ou du côté du ou des filetages situés à l’opposé de l’extrémité distale de l’élément tubulaire fileté. On connaît également des butées intermédiaires sur des joints comportant au moins deux étages de filetages, une surface de butée intermédiaire se trouvant entre les deux filetages d’un élément. A first abutment may be formed by two abutment surfaces of two threaded tubular elements, oriented substantially radially and configured so as to be in contact with each other after screwing tubular elements threaded together, therefore in the assembled state or in the assembled state and during compressive stresses on the tubular joint. The stops generally have negative angles with respect to the main axis of the connections. A first abutment surface may be located on the distal end of a threaded tubular member, or on the side of the thread(s) located opposite the distal end of the threaded tubular member. Intermediate abutments are also known on joints comprising at least two levels of threads, an intermediate abutment surface being between the two threads of an element.
[4] De manière générale, pour des raisons techniques et d’usinage, les différentes parties d’un même composant, qu’il s’agisse de l’élément tubulaire ou encore des extrémités filetées, sont conçus selon un seul et même type de matériau (alliage ou non). [4] In general, for technical and machining reasons, the different parts of the same component, whether it is the tubular element or the threaded ends, are designed according to one and the same type. of material (alloy or not).
[5]Les connexions dites « premium » comportent des surfaces d’étanchéité appelées portées d’étanchéité, au moins une sur le pin, et au moins une correspondante sur le box, destinées à être mises en contact interférant lorsque les connexions pin et box sont assemblées l’une avec l’autre, de manière à former un joint présentant une étanchéité aux liquides et/ou aux gaz. Les portées d’étanchéité doivent maintenir une étanchéité empêchant le passage de liquides et/ou de gaz lorsque les connexions sont assemblées entre elles et lors de l’utilisation des tubes comportant ces connexions assemblées dans une colonne, par exemple une colonne de puits de pétrole, c'est-à-dire que la fonction d’étanchéité doit être maintenue dans le plus large spectre d’utilisation possible, y compris lorsque le joint est soumis à une pression interne ou à une pression externe, à des sollicitations de compression ou des sollicitations de traction, à température ambiante ou à température élevée, ce spectre correspondant à un domaine de fonctionnement du joint. [5]The so-called "premium" connections include sealing surfaces called sealing surfaces, at least one on the pin, and at least one corresponding on the box, intended to be brought into interfering contact when the pin and box connections are assembled with each other, so as to form a seal having a seal against liquids and/or gases. The sealing surfaces must maintain a seal preventing the passage of liquids and/or gases when the connections are assembled together and during the use of the tubes comprising these connections assembled in a column, for example an oil well column , that is to say that the sealing function must be maintained in the widest possible spectrum of use, including when the joint is subjected to internal pressure or to external pressure, to compressive stresses or tensile stresses, at room temperature or at high temperature, this spectrum corresponding to an operating range of the joint.
[6] En général, les portées d’étanchéité sont conçues pour travailler dans le domaine élastique du matériau qui les constitue de façon à maintenir la qualité d’étanchéité sous diverses sollicitations successives. [6] In general, sealing surfaces are designed to work in the elastic range of the material that constitutes them so as to maintain the quality of sealing under various successive stresses.
[7]Cependant, pour assurer une bonne étanchéité, les portées d’étanchéité doivent être assemblées de manière à créer de grandes pressions de contact. Il peut arriver, notamment en cours d’assemblage, lorsque l’on recherche des performances élevées, que des pressions de contact trop fortes soient atteintes, avec des risques de plastification, ou encore des risques de grippage. On entend par grippage des cas où de la matière est arrachée : En cas de grippage, la fonction d’étanchéité est fortement compromise. [7]However, to ensure a good seal, the sealing surfaces must be assembled in such a way as to create high contact pressures. It may happen, especially during assembly, when high performance is sought, that too high contact pressures are reached, with risks of plastification, or risks of seizing. By seizing, we mean cases where material is torn off: In the event of seizing, the sealing function is seriously compromised.
[8]Par ailleurs, il se peut que l’étanchéité du joint ne soit pas maintenue lorsque le joint est sollicité, la matière supportant les surfaces d’étanchéité se déformant avec une amplitude de déplacement de la surface d’étanchéité diminuant et annulant l’interférence, voire avec rupture de contact des surfaces d’étanchéité. [8] Furthermore, it is possible that the tightness of the joint is not maintained when the joint is stressed, the material supporting the sealing surfaces deforming with an amplitude of displacement of the sealing surface decreasing and canceling the interference, or even with rupture of contact of the sealing surfaces.
[9] Il existe un besoin pour obtenir un élément tubulaire fileté qui permette de garantir une étanchéité même sous des sollicitations importantes, tout en diminuant les risques de grippage. [9] There is a need to obtain a threaded tubular element which makes it possible to guarantee sealing even under significant stresses, while reducing the risks of seizing.
[10] La présente invention vise à résoudre ce problème avec un élément tubulaire comprenant un corps, le corps comportant une première surface sur laquelle est ménagée un filetage, une deuxième surface radialement opposée à la première surface, une surface d’étanchéité située sur la première surface, ledit corps étant dans un acier ayant une première limite d’élasticité Ysl, l’élément tubulaire comprenant un segment s’étendant radialement depuis la deuxième surface au droit de la surface d’étanchéité et ayant une deuxième limite d’élasticité Ys2 plus grande que la première limite d’élasticité Ysl. [10] The present invention aims to solve this problem with a tubular element comprising a body, the body comprising a first surface on which a thread is provided, a second surface radially opposite the first surface, a sealing surface located on the first surface, said body being in a steel having a first elastic limit Ysl, the tubular element comprising a segment extending radially from the second surface in line with the sealing surface and having a second elastic limit Ys2 greater than the first yield strength Ysl.
Ainsi, la matière supportant la surface d’étanchéité a une rigidité améliorée, et le joint résultant de l’assemblage d’un tel élément tubulaire avec un autre élément tubulaire a des performances en étanchéité sous sollicitations améliorées. Thus, the material supporting the sealing surface has improved rigidity, and the seal resulting from the assembly of such a tubular element with another tubular element has improved sealing performance under stresses.
[11] Selon un aspect, le segment présente une surface de contact radial avec le corps au droit de la surface d’étanchéité. Avec un tel contact radial la surface d’étanchéité est supportée, en particulier radialement, à la fois par le corps et par le segment de sorte que le segment participe activement au renforcement de la rigidité de l’élément tubulaire au niveau de la surface d’étanchéité, l’élément tubulaire présentant ainsi au niveau de la surface d’étanchéité une raideur radiale satisfaisante. [11] According to one aspect, the segment has a radial contact surface with the body in line with the sealing surface. With such radial contact the sealing surface is supported, in particular radially, both by the body and by the segment so that the segment actively participates in reinforcing the rigidity of the tubular element at the level of the surface of sealing, the tubular element thus having at the level of the sealing surface a satisfactory radial stiffness.
[12] Ainsi, selon un aspect, ledit segment a une deuxième limite d’élasticité Ys2 plus grande que la première limite d’élasticité Ysl de manière à renforcer la rigidité structurelle, typiquement la raideur radiale, de l’élément tubulaire au droit de ladite surface d’étanchéité. [13] Selon un aspect, la surface d’étanchéité de l’élément tubulaire est située axialement entre le filetage et l’extrémité distale de l’élément tubulaire. La région vers l’extrémité distale étant généralement la région de moindre épaisseur radiale de l’élément fileté, l’effet de rigidité supplémentaire apportée par le segment est plus fort pour une telle localisation de la surface d’étanchéité. [12] Thus, according to one aspect, said segment has a second elastic limit Ys2 greater than the first elastic limit Ysl so as to reinforce the structural rigidity, typically the radial stiffness, of the tubular element at the right of said sealing surface. [13] According to one aspect, the sealing surface of the tubular element is located axially between the thread and the distal end of the tubular element. The region towards the distal end generally being the region of lesser radial thickness of the threaded element, the effect of additional rigidity provided by the segment is stronger for such a location of the sealing surface.
[14]Selon un autre aspect, l’extrémité distale peut comprendre une surface de butée et le segment s’étendre axialement jusqu’à ladite surface de butée et comprendre au moins une partie de la surface de butée. Ceci permet d’augmenter la rigidité axiale de l’élément depuis la butée jusqu’au niveau de la surface d’étanchéité et d’obtenir une synergie entre le segment, la surface de butée et la surface d’étanchéité. La surface d’étanchéité a un déplacement réduit lorsque le joint est soumis à un effort de compression. La longueur du segment permet de répartir les contraintes exercées dans la matière aux environs de la surface d’étanchéité. Plus de pression peut être exercée au niveau de la butée, pression qui induit via le segment plus de pression de contact au niveau de la surface d’étanchéité. Le segment permet également d’améliorer l’étanchéité lorsque le joint est soumis à un effort de traction, le segment rigidifiant l’extrémité portant la surface d’étanchéité. [14]In another aspect, the distal end may include an abutment surface and the segment extend axially to said abutment surface and include at least a portion of the abutment surface. This makes it possible to increase the axial rigidity of the element from the abutment to the level of the sealing surface and to obtain a synergy between the segment, the abutment surface and the sealing surface. The sealing surface has a reduced displacement when the seal is subjected to a compression force. The length of the segment makes it possible to distribute the stresses exerted in the material around the sealing surface. More pressure can be exerted on the thrust bearing, which induces more contact pressure on the sealing surface via the segment. The segment also makes it possible to improve sealing when the seal is subjected to a tensile force, the segment stiffening the end carrying the sealing surface.
[15]La deuxième surface peut comporter un renfoncement et le segment être situé dans ledit renfoncement. Le segment peut être entièrement situé dans le renfoncement. Ceci permet d’améliorer la rigidité de la lèvre d’extrémité sans ajouter d’épaisseur sur ladite lèvre d’extrémité. Ceci peut permettre d’éviter de réduire un diamètre interne de la connexion au niveau de la lèvre d’extrémité. Le segment peut être partiellement seulement dans le renfoncement. Le segment permet de pallier des limitations dimensionnelles liées aux méthodes de rengraissement et/ou de conification de l’extrémité d’un tube. [15] The second surface may include a recess and the segment be located in said recess. The segment may be located entirely within the recess. This makes it possible to improve the rigidity of the end lip without adding thickness to said end lip. This can avoid reducing an internal diameter of the connection at the end lip. The segment can be only partially in the recess. The segment makes it possible to overcome the dimensional limitations linked to the methods of fattening and/or conification of the end of a tube.
[16] Selon un aspect, la première limite d’élasticité Ysl du corps et la deuxième limite d’élasticité Ys2 du segment ont des valeurs notées [Ysl] [Ys2] telles que [Ys2] >= 1,15 x [Ysl] et préférentiellement [Ys2] >= 1,3 x [Ysl] [16] According to one aspect, the first elastic limit Ysl of the body and the second elastic limit Ys2 of the segment have values denoted [Ysl] [Ys2] such that [Ys2] >= 1.15 x [Ysl] and preferably [Ys2] >= 1.3 x [Ysl]
[17]Selon un autre aspect, le segment peut avoir une épaisseur radiale diminuant en s’éloignant de l’extrémité distale. Ceci permet d’augmenter la surface de contact entre le segment et le corps de la connexion. Ceci permet de diriger les efforts transmis par la surface de butée dans une direction radiale et dans le sens vers l’intérieur de la connexion. [17]According to another aspect, the segment can have a radial thickness decreasing away from the distal end. This makes it possible to increase the contact surface between the segment and the body of the connection. This allows directing the forces transmitted by the abutment surface in a radial direction and in the direction towards the inside of the connection.
[18]Selon un aspect, le segment peut être rapporté sur le corps par fabrication additive. Ceci permet un meilleur contrôle de la forme et de l’adhésion du segment sur le corps. Ceci permet également de limiter dimensionnellement la zone affectée thermiquement. [18]According to one aspect, the segment can be attached to the body by additive manufacturing. This allows better control of the shape and adhesion of the segment to the body. This also makes it possible to dimensionally limit the heat-affected zone.
[19]Selon un aspect, le segment a une épaisseur radiale d’au moins 1,8 mm. [19]In one aspect, the segment has a radial thickness of at least 1.8 mm.
[20] Préférentiellement, le segment (11) peut avoir une épaisseur Ep supérieure ou égale à une épaisseur minimale Epmin telle que : [20] Preferably, the segment (11) may have a thickness Ep greater than or equal to a minimum thickness Epmin such that:
[Math 1]
Figure imgf000007_0001
[Math 1]
Figure imgf000007_0001
[21]Aussi, le segment peut avoir une épaisseur Ep inférieure ou égale à une épaisseur maximale Epmax telle que Epmax = Min (Epmaxl ; Epmax2) où : [21]Also, the segment can have a thickness Ep less than or equal to a maximum thickness Epmax such that Epmax = Min (Epmaxl; Epmax2) where:
[Math 2]
Figure imgf000007_0002
[Math 2]
Figure imgf000007_0002
Et And
[Math 3]
Figure imgf000007_0003
[Math 3]
Figure imgf000007_0003
[22] Où GD est le diamètre intérieur de corps sur lèvre, JID est le diamètre intérieur de lèvre, PCD est le diamètre externe de lèvre au niveau de la surface d’étanchéité. [22] Where GD is the body-to-lip inside diameter, JID is the lip inside diameter, PCD is the lip outside diameter at the sealing surface.
[23] Selon un aspect, le segment peut être situé à une distance radiale d’au moins 1,5 mm de la surface d’étanchéité. Ceci permet de s’assurer que la réalisation du segment sur le corps n’influe pas sur les propriétés de la matière adjacente à la surface d’étanchéité. [23] In one aspect, the segment may be located at a radial distance of at least 1.5 mm from the sealing surface. This ensures that the construction of the segment on the body does not influence the properties of the material adjacent to the sealing surface.
[24] Selon un aspect, le segment peut avoir une longueur axiale d’au moins 4 mm. [24] In one aspect, the segment may have an axial length of at least 4 mm.
[25]Aussi, le segment peut avoir une longueur axiale au moins égale à une longueur axiale de la surface d’étanchéité additionnée d’au moins 4 mm, la surface d’étanchéité étant la surface d’étanchéité au droit de laquelle le segment se situe radialement. [26] Selon un autre aspect, le segment ne comprend pas d’évidement agencé pour le passage de fluide ou gaz, ou d’évidement agencé pour abriter un capteur. [25] Also, the segment may have an axial length at least equal to an axial length of the sealing surface plus at least 4 mm, the sealing surface being the sealing surface in line with which the segment lies radially. [26] According to another aspect, the segment does not include a recess arranged for the passage of fluid or gas, or a recess arranged to house a sensor.
[27]Le segment peut être dans un métal choisi parmi les aciers alliés, fortement alliés, alliages cupro-nickel, alliages de titane, céramiques, vitrocéramiques, ou cuivre, cupronickel, stellite, ferrochrome. [27]The segment can be in a metal chosen from alloy steels, high alloy steels, cupro-nickel alloys, titanium alloys, ceramics, glass-ceramics, or copper, cupronickel, stellite, ferrochrome.
[28]Altemativement, le segment peut être dans le même métal que le métal du corps. Il est en effet possible d’obtenir des limites élastiques différentes avec des aciers de même nature. [28]Alternatively, the segment can be in the same metal as the metal of the body. It is indeed possible to obtain different elastic limits with steels of the same nature.
[29]Enfin, l’invention est aussi un procédé pour obtenir un élément tubulaire tel que décrit précédemment, ledit procédé pouvant comprendre une étape de réalisation du segment par un procédé choisi parmi les procédés de rechargement, les procédés de fusion par faisceau d’ électrons, les procédés de fusion laser sur lit de poudre métallique ou « sélective laser melting », les procédés de frittage sélectif par laser, les procédés de dépôt métallique direct ou « Direct Energy Déposition », les procédés de Dépôt par Projection de Liant ou Dépôt par Projection Laser, les procédés de dépôt par fabrication additive arc-fil. [29]Finally, the invention is also a method for obtaining a tubular element as described above, said method possibly comprising a step of producing the segment by a method chosen from among hardfacing methods, fusion methods by beam of electrons, laser melting processes on a metal powder bed or "selective laser melting", selective laser sintering processes, direct metal deposition processes or "Direct Energy Deposition", Binder Projection Deposition or Deposition processes by Laser Projection, deposition processes by arc-wire additive manufacturing.
Brève description des figures Brief description of figures
[30]L’invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description suivante de plusieurs modes de réalisation particuliers de l’invention, donnés uniquement à titre illustratif et non limitatif, en référence aux dessins annexés. [30] The invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly during the following description of several particular embodiments of the invention, given for illustrative purposes only. and non-limiting, with reference to the accompanying drawings.
[31] [Fig.1] La figure 1 est une vue en coupe d’une extrémité d’un élément tubulaire selon un mode préféré de l’invention et avec une extrémité mâle de l’élément tubulaire fileté ; [31] [Fig.1] Figure 1 is a sectional view of one end of a tubular element according to a preferred embodiment of the invention and with a male end of the threaded tubular element;
[32] [Fig.2] La figure 2 est une vue partielle en coupe d’une extrémité d’un élément tubulaire selon l’invention dans une première variation ; [32] [Fig.2] Figure 2 is a partial sectional view of one end of a tubular element according to the invention in a first variation;
[33] [Fig.3] La figure 3 est une vue en coupe partielle d’une extrémité d’un élément tubulaire selon une deuxième variante de l’invention ; [33] [Fig.3] Figure 3 is a partial sectional view of one end of a tubular element according to a second variant of the invention;
[34] [Fig.4] La figure 4 est une vue en coupe partielle d’ une extrémité d’un élément tubulaire selon une autre variante de l’invention ; [34] [Fig.4] Figure 4 is a partial sectional view of one end of a tubular element according to another variant of the invention;
Description des modes de réalisation [35]La figure 1 montre un mode de réalisation préféré de l’invention. La figure 1 montre une vue partielle en coupe d’un élément tubulaire (2) ayant un axe principal (X) comprenant une extrémité ou connexion mâle, comprenant une première surface (3) sur laquelle est ménagé un filetage (5) qui est ici un filetage externe, une surface d’étanchéité mâle (10), une extrémité distale (8). Dans l’exemple de la figure 1, l’élément tubulaire (2) comprend sur l’extrémité distale (8) une surface de butée (9). Description of embodiments [35] Figure 1 shows a preferred embodiment of the invention. Figure 1 shows a partial sectional view of a tubular element (2) having a main axis (X) comprising a male end or connection, comprising a first surface (3) on which is provided a thread (5) which is here an external thread, a male sealing surface (10), a distal end (8). In the example of Figure 1, the tubular element (2) comprises on the distal end (8) an abutment surface (9).
[36]L’ élément tubulaire comprend un corps (4) dans une première matière, ici un premier acier présentant une première limite d’élasticité Ysl. Le filetage (5), la surface d’étanchéité (10) sont réalisés dans le corps (4) et sont donc constitués par ledit premier acier de première limite d’élasticité Ysl. Le filetage (5) et la surface d’étanchéité (10) sont généralement obtenus par usinage dans le corps de l’élément tubulaire (2). [36] The tubular element comprises a body (4) in a first material, here a first steel having a first yield strength Ysl. The thread (5), the sealing surface (10) are made in the body (4) and are therefore constituted by said first steel of first yield strength Ysl. The thread (5) and the sealing surface (10) are generally obtained by machining in the body of the tubular element (2).
[37]Les connexions peuvent également comprendre plusieurs étages de filetages, par exemple deux étages de filetage. Des connexions peuvent aussi comprendre des surfaces d’étanchéités supplémentaires, par exemple une surface d’étanchéité située du côté du filetage externe (5) qui est opposé à l’extrémité distale (8), ou encore une surface d’étanchéité située entre deux étages de filetages. Les connexions peuvent aussi comprendre une surface de butée située axialement entre les deux étages de filetage. Les connexions peuvent être dépourvues de surface de butée. [37]The connections can also comprise several stages of threads, for example two stages of threads. Connections can also comprise additional sealing surfaces, for example a sealing surface located on the side of the external thread (5) which is opposite to the distal end (8), or even a sealing surface located between two thread stages. The connections can also include an abutment surface located axially between the two thread stages. The connections may have no abutment surface.
[38]L’ élément tubulaire (2) de la figure 1 comprend un segment (11). Le segment (11) s’étend depuis une deuxième surface (7) radialement opposée à la première surface. La deuxième surface est ici une surface interne. La localisation axiale du segment (11) est telle que le segment (11) se situe au droit de la surface d’étanchéité (10). Dans le mode de réalisation de la figure 1, le segment (11) s’étend d’une part au-delà de la position axiale de la surface d’étanchéité (10) du côté opposé à l’extrémité distale (8), et le segment (11) s’étend d’autre part vers l’extrémité distale (8). Dans ce mode de réalisation, le segment (11) s’étend jusqu’à l’extrémité distale (8). [38] The tubular element (2) of Figure 1 comprises a segment (11). The segment (11) extends from a second surface (7) radially opposite the first surface. The second surface here is an internal surface. The axial location of the segment (11) is such that the segment (11) is located in line with the sealing surface (10). In the embodiment of Figure 1, the segment (11) extends on the one hand beyond the axial position of the sealing surface (10) on the side opposite the distal end (8), and the segment (11) extends on the other hand towards the distal end (8). In this embodiment, the segment (11) extends to the distal end (8).
[39]Le segment (11) est dans un acier présentant une deuxième limite d’élasticité Ys2. Cette limite d’élasticité est avantageusement plus grande que la première limite d’élasticité Ysl. Ceci permet de rendre plus rigide la lèvre d’extrémité de l’élément tubulaire (2), la lèvre d’extrémité étant la partie de l’élément tubulaire (2) située entre le filetage (5) et l’extrémité distale (8). Cette rigidité plus forte est donc obtenue au niveau de la surface d’étanchéité (10). En conséquence, lorsque, en utilisation, l’élément tubulaire est soumis à des contraintes telles qu’une pression externe, une flexion, la lèvre d’extrémité rigidifiée par le segment se déforme moins, et la surface d’étanchéité maintient un contact plus longtemps avec une surface d’étanchéité correspondante sur un élément tubulaire correspondant. Les performances en étanchéité de la connexion sont améliorées. Cette performance améliorée peut être obtenue sans augmenter l’interférence au niveau des surfaces d’étanchéité en contact dans un joint formé de deux connexions, ce qui permet de ne pas augmenter les risques de grippage à l’assemblage des connexions. [39]The segment (11) is in a steel having a second yield strength Ys2. This elastic limit is advantageously greater than the first elastic limit Ysl. This makes it possible to make the end lip of the tubular element (2) more rigid, the end lip being the part of the element tube (2) located between the thread (5) and the distal end (8). This greater rigidity is therefore obtained at the level of the sealing surface (10). Consequently, when, in use, the tubular element is subjected to stresses such as external pressure, bending, the end lip stiffened by the segment deforms less, and the sealing surface maintains a contact more long with a corresponding sealing surface on a corresponding tubular element. The sealing performance of the connection is improved. This improved performance can be obtained without increasing the interference at the level of the sealing surfaces in contact in a joint formed of two connections, which makes it possible not to increase the risks of seizing when the connections are assembled.
[40] Avantageusement, le corps (4) de l’élément tubulaire comprend un renfoncement (14) pratiqué sur la deuxième surface (7). Le segment (11) se situe dans le renfoncement (14). Le segment peut être ajouté au corps (4) sans présence de renfoncement sur la deuxième surface (7), ce qui peut être avantageux lorsque la matière disponible en extrémité d’élément tubulaire est trop faible, mais qui peut présenter le désavantage dans certains cas de réduire le diamètre intérieur libre, ce qui peut être gênant par exemple pour le passage de composants à l’intérieur de l’élément tubulaire. [40] Advantageously, the body (4) of the tubular element comprises a recess (14) formed on the second surface (7). The segment (11) is located in the recess (14). The segment can be added to the body (4) without the presence of a recess on the second surface (7), which can be advantageous when the material available at the end of the tubular element is too low, but which can have the disadvantage in certain cases to reduce the free internal diameter, which can be inconvenient for example for the passage of components inside the tubular element.
[41] Le segment (11) est un ajout de matière agencé de manière à renforcer la rigidité structurelle de la lèvre d’extrémité d’un élément tubulaire. La plus haute limite de la limite d’élasticité Ys2 du segment permet de réduire le volume d’encombrement de matière ajoutée. La présence d’un renfoncement (14) dans le corps (4) et le positionnement du segment (11), en partie ou en totalité, permet de réduire encore l’encombrement, et même de n’avoir aucun encombrement supplémentaire. [41] The segment (11) is an addition of material arranged to reinforce the structural rigidity of the end lip of a tubular element. The highest limit of the Ys2 elastic limit of the segment makes it possible to reduce the bulk volume of added material. The presence of a recess (14) in the body (4) and the positioning of the segment (11), in part or in whole, makes it possible to further reduce the size, and even to have no additional size.
[42]Des tests menés ont permis de constater qu’une différence de limite d’élasticité telle que la seconde limite d’élasticité Ys2 du segment (11) est supérieure ou égale à 1,15 fois la première limite d’élasticité du corps Ysl permet d’obtenir une amélioration significative. Lorsque la seconde limite d’élasticité Ys2 du segment (11) est supérieure ou égale à 1,3 fois la première limite d’élasticité du corps Ysl, la performance obtenue est encore meilleure. [42]Tests carried out have shown that a difference in elastic limit such that the second elastic limit Ys2 of the segment (11) is greater than or equal to 1.15 times the first elastic limit of the body Ysl provides a significant improvement. When the second elastic limit Ys2 of the segment (11) is greater than or equal to 1.3 times the first elastic limit of the body Ysl, the performance obtained is even better.
[43]Le segment (11) peut être réalisé dans un acier présentant la même composition chimique que l’acier du corps (4) et qui présente une deuxième limite d’élasticité Ys2 néanmoins supérieure à la première limite d’élasticité Ysl du corps, du fait d’une structure cristalline distincte. Cette structure cristalline distincte est obtenue par un traitement thermique. Une méthode très satisfaisante à ce jour est d’effectuer un dépôt de matière du segment par une méthode de fabrication additive connue, qui permet de déposer des gouttes de matière en fusion qui subissent un refroidissement rapide lors du dépôt, ce qui crée un acier à limite d’élasticité supérieure à celle de l’acier du corps (4) qui est mis en forme par des méthodes entraînant un cycle de refroidissement plus long. [43] The segment (11) can be made of a steel having the same chemical composition as the steel of the body (4) and which has a second limit of elasticity Ys2 nevertheless higher than the first elastic limit Ysl of the body, because of a distinct crystalline structure. This distinct crystal structure is achieved by heat treatment. A very satisfactory method to date is to deposit material from the segment by a known additive manufacturing method, which makes it possible to deposit drops of molten material which undergo rapid cooling during deposition, which creates a steel with yield strength higher than that of the steel of the body (4) which is shaped by methods resulting in a longer cooling cycle.
[44] Alternativement, le segment (11) peut être réalisé dans un deuxième acier de composition chimique distincte de celle du premier acier du corps (4), le deuxième acier du segment présentant de manière inhérente une limite d’élasticité plus élevée que le premier acier du corps (4). Dans ce cas, la matière du segment (11) est également déposée par un procédé de fabrication additive. Par exemple, un tel acier peut être un alliage Ferro 55 des sociétés Boehler-Voestalpine, Deloro-Stellite-Kennametal, Carpenter, Erasteel, Hoganas. L’acier peut être choisi les aciers alliés, fortement alliés, alliages cupro-nickel, alliages de titane, céramiques, vitrocéramiques, ou cuivre, cupronickel, stellite, ferrochrome, ayant des limites d’élasticités convenables pour une utilisation sur un élément tubulaire. [44] Alternatively, the segment (11) can be made of a second steel with a different chemical composition from that of the first steel of the body (4), the second steel of the segment inherently having a higher elastic limit than the first body steel (4). In this case, the material of the segment (11) is also deposited by an additive manufacturing process. For example, such a steel can be a Ferro 55 alloy from Boehler-Voestalpine, Deloro-Stellite-Kennametal, Carpenter, Erasteel, Hoganas. The steel can be chosen from alloy steels, high alloys, cupro-nickel alloys, titanium alloys, ceramics, glass-ceramics, or copper, cupronickel, stellite, ferrochrome, having suitable elasticity limits for use on a tubular element.
[45]Le dépôt, ou assemblage du segment (11) sur le corps (4) est généralement exothermique. Les essais effectués par la demanderesse ont montré que lorsque le segment (11) est situé à une distance radiale d’au moins 1,5 mm de la surface d’étanchéité (10), la surface d’étanchéité n’est pas affectée par le procédé d’apport de matière du segment (11) sur le corps (4). C’est pourquoi le segment (11) est situé à une distance radiale d’au moins 1,5 mm de la surface d’étanchéité (10) en tout point [45] The deposit, or assembly of the segment (11) on the body (4) is generally exothermic. The tests carried out by the applicant have shown that when the segment (11) is located at a radial distance of at least 1.5 mm from the sealing surface (10), the sealing surface is not affected by the process for adding material from the segment (11) to the body (4). This is why the segment (11) is located at a radial distance of at least 1.5 mm from the sealing surface (10) at all points.
[46]Le segment (11) de la figure 1 doit avoir une épaisseur d’au moins 1,8 mm. On entend par épaisseur la taille du profil du segment mesurée radialement. [46]The segment (11) of figure 1 must have a thickness of at least 1.8 mm. By thickness is meant the size of the profile of the segment measured radially.
[47]L’ épaisseur est déterminée au droit de la surface d’étanchéité selon une direction radiale. Une surface d’étanchéité ayant une longueur axiale, l’épaisseur peut être mesurée sur toute droite de direction radiale et passant par un point de la surface d’étanchéité. [48]Néanmoins, un segment (11) peut être rapporté sur des éléments tubulaires (2) de tailles très variables. L’épaisseur du segment peut être adaptée à ces différentes tailles. La demanderesse a déterminé les épaisseurs minimales et maximales préférentielles pour un segment, épaisseurs dépendantes de l’élément tubulaire. [47]The thickness is determined in line with the sealing surface in a radial direction. A sealing surface having an axial length, the thickness can be measured on any straight line in the radial direction and passing through a point on the sealing surface. [48]Nevertheless, a segment (11) can be attached to tubular elements (2) of very variable sizes. The thickness of the segment can be adapted to these different sizes. The applicant has determined the preferred minimum and maximum thicknesses for a segment, thicknesses depending on the tubular element.
[49]Ainsi, le segment (11) peut avoir une épaisseur Ep supérieure ou égale à une épaisseur minimale Epmin telle que : [49]Thus, the segment (11) can have a thickness Ep greater than or equal to a minimum thickness Ep min such that:
[Math 4]
Figure imgf000012_0001
[Math 4]
Figure imgf000012_0001
[50]Où Ysl est la limite élastique de la matière du corps (4), Ys2 la limite élastique de la matière du segment, GD est le diamètre de fond de renfoncement (14), JID est le diamètre intérieur de la deuxième surface en extrémité distale, PCD est le diamètre de la première surface au niveau de la surface d’étanchéité. [50]Where Ysl is the elastic limit of the material of the body (4), Ys2 the elastic limit of the material of the segment, GD is the diameter of the bottom of the recess (14), JID is the internal diameter of the second surface in distal end, PCD is the diameter of the first surface at the sealing surface.
[51]Si le résultat de l’équation 1 est inférieur à 1,8, alors l’épaisseur minimale est de 1,8 mm. [51]If the result of equation 1 is less than 1.8, then the minimum thickness is 1.8 mm.
[52] De manière avantageuse, l’épaisseur du segment (11) peut être limitée à une épaisseur Ep inférieure ou égale à une épaisseur maximale Epmax telle que : [Math 5] [52] Advantageously, the thickness of the segment (11) can be limited to a thickness Ep less than or equal to a maximum thickness Epmax such that: [Math 5]
Où Where
[Math 6] [Math 6]
Où Where
[Math 7]
Figure imgf000012_0002
[Math 7]
Figure imgf000012_0002
[53]Enfin, pour les cas de figures où la valeur Epmin est supérieure ou égal à la valeur Epmax, il est indiqué de prendre pour épaisseur nominale du segment la valeur Epmin. On comprendra que les valeurs d’épaisseurs sont celles que doit avoir le segment au droit de la surface d’étanchéité. [54] Le segment (11) a une longueur mesurée axialement d’au moins 4 mm. Ceci permet d’obtenir un effet de rigidification de la lèvre au niveau de la surface d’étanchéité, et de couvrir différentes positions d’un point d’étanchéité lorsque l’élément tubulaire est soumis à différentes contraintes, les surfaces d’étanchéités en contact pouvant bouger l’une par rapport à l’autre d’une certaine distance. Préférentiellement, le segment (11) a une longueur axiale au moins égale à la longueur axiale de la surface d’étanchéité additionnée de 4 mm afin de renforcer l’effet de rigidification. [53]Finally, for the scenarios where the Ep min value is greater than or equal to the Ep max value, it is advisable to take the Ep min value as the nominal thickness of the segment. It will be understood that the thickness values are those which the segment must have in line with the sealing surface. [54] The segment (11) has a length measured axially of at least 4 mm. This makes it possible to obtain a stiffening effect of the lip at the level of the sealing surface, and to cover different positions of a sealing point when the tubular element is subjected to different stresses, the sealing surfaces in contact that can move relative to each other a certain distance. Preferably, the segment (11) has an axial length at least equal to the axial length of the sealing surface plus 4 mm in order to reinforce the stiffening effect.
[55]L’ élément tubulaire (20) de la figure 2 est similaire à celui de la figure 1, comprend un segment (21) situé au droit d’une surface d’étanchéité (10), ledit segment (21) différant du premier mode de réalisation en ce que le segment (11) ne s’étend pas jusqu’à l’extrémité distale (8). Avantageusement, le segment (11) ne modifie pas la nature de la surface de butée (29) de l’extrémité distale (28). Ce mode de réalisation est particulièrement adapté à la modification d’un élément tubulaire existant, car il ne modifie pas directement les surfaces fonctionnelles comme les surfaces de butée, et ainsi leur comportement lors du vissage n’est pas ou peu modifié, et peut réduire la nécessité de certaines requalifications d’un produit ainsi modifié. [55] The tubular element (20) of Figure 2 is similar to that of Figure 1, comprises a segment (21) located in line with a sealing surface (10), said segment (21) differing from the first embodiment in that the segment (11) does not extend to the distal end (8). Advantageously, the segment (11) does not modify the nature of the abutment surface (29) of the distal end (28). This embodiment is particularly suitable for modifying an existing tubular element, because it does not directly modify the functional surfaces such as the abutment surfaces, and thus their behavior during screwing is not or only slightly modified, and can reduce the need for certain requalifications of a product thus modified.
[56]Le segment (21) a une longueur axiale d’au moins 4 mm. Préférentiellement, le segment (21) a une longueur axiale au moins égale à la longueur axiale de la surface d’étanchéité additionnée de 4 mm. Ces valeurs de longueur minimale s’appliquent également aux autres modes de réalisation. [56]The segment (21) has an axial length of at least 4 mm. Preferably, the segment (21) has an axial length at least equal to the axial length of the sealing surface plus 4 mm. These minimum length values also apply to other embodiments.
[57]Le segment (21) est situé dans un renfoncement (24) réalisé dans la deuxième surface (7). Le segment (21) est complètement contenu dans le renfoncement (24). Alternativement, le segment (21) peut aussi être partiellement situé hors du renfoncement (24). [57] The segment (21) is located in a recess (24) made in the second surface (7). The segment (21) is completely contained within the recess (24). Alternatively, the segment (21) can also be located partially outside the recess (24).
[58]De manière similaire aux modes de réalisation des figures 1 et 2, l’élément tubulaire (30) de la figure 3 comprend un corps (4), le corps (4) comprend une première surface (3) sur laquelle sont ménagés un filetage (5) et une surface d’étanchéité (10). L’élément tubulaire comprend une extrémité distale (38), ladite extrémité distale comprenant une surface de butée (39). Une surface de butée est orientée sensiblement radialement, est agencée pour entrer en contact avec une surface de butée complémentaire d’une connexion d’un élément tubulaire correspondant avec lequel l’élément tubulaire (30) est assemblé. [59]Un segment (31) s’étend radialement depuis une deuxième surface (7) opposée à la première surface (3), le segment (31) est situé radialement au droit de la surface d’étanchéité (10), le segment (31) s’étend jusqu’à l’extrémité distale (38) de l’élément tubulaire (30), et le segment comprend entièrement la surface de butée (39). Le segment (31) ne comprend pas la surface d’étanchéité (10). Ainsi, tous les efforts de contact au niveau de la butée sont transmis par une surface de butée homogène en matière. Avantageusement, la surface de contact entre le corps (4) et le segment (31) est conique de manière à augmenter la surface de contact entre le corps (4) et le segment (31). Avantageusement, la section de cette surface conique est telle que son diamètre augmente vers l’extrémité distale, de cette façon les forces de contact exercées sur la butée induisent une meilleure répartition des contraintes vers la surface d’étanchéité (10). [58] Similarly to the embodiments of Figures 1 and 2, the tubular element (30) of Figure 3 comprises a body (4), the body (4) comprises a first surface (3) on which are provided a thread (5) and a sealing surface (10). The tubular member includes a distal end (38), said distal end including an abutment surface (39). An abutment surface is oriented substantially radially, is arranged to come into contact with a complementary abutment surface of a connection of a corresponding tubular element with which the tubular element (30) is assembled. [59] A segment (31) extends radially from a second surface (7) opposite the first surface (3), the segment (31) is located radially in line with the sealing surface (10), the segment (31) extends to the distal end (38) of the tubular member (30), and the segment entirely includes the abutment surface (39). The segment (31) does not include the sealing surface (10). Thus, all the contact forces at the abutment are transmitted by a homogeneous abutment surface in material. Advantageously, the contact surface between the body (4) and the segment (31) is conical so as to increase the contact surface between the body (4) and the segment (31). Advantageously, the section of this conical surface is such that its diameter increases towards the distal end, in this way the contact forces exerted on the abutment induce a better distribution of the stresses towards the sealing surface (10).
[60]La deuxième surface (7) comprend un renfoncement (34). Le segment (31) est contenu partiellement dans le renfoncement (34). [60]The second surface (7) includes a recess (34). Segment (31) is partially contained within recess (34).
[61]Pour tous les modes de réalisation, le segment ne comprend pas de porosité ou de canal permettant de laisser passer du gaz ou des liquides. Le segment ne comprend pas d’évidement pour loger un capteur. Ces caractéristiques peuvent s’appliquer à tous les modes de réalisation décrits dans la présente demande. [61] For all embodiments, the segment does not include any porosity or channel allowing the passage of gas or liquids. The segment does not include a recess to house a sensor. These characteristics can apply to all the embodiments described in this application.
[62] Les modes de réalisation décrits décrivent une connexion mâle mais les caractéristiques décrites s’appliquent également sur une connexion femelle. A titre illustratif, la figure 4 montre une portion d’élément tubulaire (40) du mode de réalisation de la figure 1 dans la variante d’une connexion femelle. [62] The embodiments described describe a male connection but the characteristics described also apply to a female connection. By way of illustration, Figure 4 shows a portion of tubular element (40) of the embodiment of Figure 1 in the variant of a female connection.
L’élément tubulaire (40) de la figure 4 comprend une première surface (43) comprend un corps (4), une extrémité distale (48), une surface de butée (49).The tubular element (40) of FIG. 4 comprises a first surface (43) comprises a body (4), a distal end (48), an abutment surface (49).
Le corps (4) comprenant un filetage (45), une surface d’étanchéité (50). L’élément tubulaire (40) comprend un segment (41). Le segment (41) s’étend depuis une deuxième surface (47) radialement opposée à la première surface (43). La deuxième surface est ici une surface externe. La localisation axiale du segment (41) est telle que le segment (41) se situe au droit de la surface d’étanchéité (50). Dans le mode de réalisation de la figure 1, le segment (41) s’étend d’une part au-delà de la position axiale de la surface d’étanchéité (40) du côté opposé à l’extrémité distale (48), et le segment (41) s’étend d’autre part vers l’extrémité distale (48). Dans ce mode de réalisation, le segment (41) s’étend jusqu’à l’extrémité distale (48). Le segment (41) est situé dans un évidement (44). Les autres caractéristiques décrites pour le mode de réalisation de la figure 1 s’appliquent à ce mode de réalisation. The body (4) comprising a thread (45), a sealing surface (50). The tubular element (40) includes a segment (41). The segment (41) extends from a second surface (47) radially opposite the first surface (43). The second surface here is an outer surface. The axial location of the segment (41) is such that the segment (41) is located in line with the sealing surface (50). In the embodiment of Figure 1, the segment (41) extends on the one hand beyond the axial position of the sealing surface (40) on the side opposite the distal end (48), and the segment (41) extends on the other hand towards the distal end (48). In this embodiment, the segment (41) extends to the distal end (48). The segment (41) is located in a recess (44). The other characteristics described for the embodiment of FIG. 1 apply to this embodiment.
[63]Des tests comparatifs ont été menés entre une connexion de l’état de l’art et une connexion, ladite connexion étant obtenue en modifiant une connexion de l’état de l’art pour incorporer un segment selon le premier mode de réalisation conforme à la figure 1, le segment étant complètement situé dans un évidement. Le diamètre nominal de connexion est de 177,8 mm (7 pouces), l’acier de base est un alliage PI 10 selon la norme API 5CT. Le segment est également en acier PI 10, rapporté par fabrication additive, plus précisément par projection de poudre par laser. Des essais de vissage puis des essais d’étanchéité sous contrainte ont été menés avec les pièces réalisées. Un essai de vissage est une série de 10 assemblages/désassemblages. L’étanchéité est testée sur les méthodes de pression interne au gaz, puis pression externe au liquide. Lors des tests de vissage, aucun des spécimens de test selon l’invention n’ont souffert de grippage. L’exemple comparatif « référence 1 » a souffert de grippage après le 3eme vissage dévissage, alors que le « spécimen 1 » selon l’invention a réussi à faire 10 vissages/dévissages sans grippage.. Les exemples comparatifs « référence 2 » a échoué aux tests d’étanchéité sous pression externe, alors que le « spécimen 2 » selon l’invention a réussi les tests d’étanchéité. Ainsi, l’invention permet d’augmenter les performances d’étanchéité sous contrainte par rapport à une connexion ne comprenant pas l’invention, sans que la performance en grippage ne soit affectée. [63]Comparative tests were carried out between a state-of-the-art connection and a connection, said connection being obtained by modifying a state-of-the-art connection to incorporate a segment according to the first embodiment according to Figure 1, the segment being completely located in a recess. The nominal connection diameter is 177.8 mm (7 inches), the base steel is a PI 10 alloy according to API 5CT. The segment is also made of PI 10 steel, added by additive manufacturing, more precisely by laser powder projection. Screwing tests and then tightness tests under stress were carried out with the parts produced. A screwing test is a series of 10 assemblies/disassemblies. Leakage is tested using internal gas pressure and then external liquid pressure methods. During the screwing tests, none of the test specimens according to the invention suffered from seizing. The "reference 1" comparative example suffered from seizing after the 3rd screwing and unscrewing, while the "specimen 1" according to the invention succeeded in making 10 screwing/unscrewing operations without seizing. The "reference 2" comparative examples had failed the sealing tests under external pressure, while the “specimen 2” according to the invention passed the sealing tests. Thus, the invention makes it possible to increase the sealing performance under stress compared to a connection not comprising the invention, without the seizing performance being affected.
[Table 1]
Figure imgf000015_0001
Figure imgf000016_0001
[Table 1]
Figure imgf000015_0001
Figure imgf000016_0001
[64]Selon un autre aspect, l’invention porte également sur un procédé pour obtenir un élément tubulaire fileté comprenant un segment. Ce procédé comprend l’étape de choix d’un élément tubulaire avec un filetage, réalisation optionnelle d’un évidement sur la surface opposée à la surface sur laquelle est situé le filetage, puis dépôt de matière dans l’évidement ou sur ladite surface opposée. [64]According to another aspect, the invention also relates to a method for obtaining a threaded tubular element comprising a segment. This method comprises the step of choosing a tubular element with a thread, optionally making a recess on the surface opposite to the surface on which the thread is located, then depositing material in the recess or on said opposite surface .
[65]Le dépôt de matière peut se faire selon un procédé choisi parmi les procédés de rechargement, les procédés de fusion par faisceau d’électrons, les procédés de fusion laser sur lit de poudre métallique ou « sélective laser melting », les procédés de frittage sélectif par laser, les procédés de dépôt métallique direct ou « Direct Energy Déposition », les procédés de Dépôt par Projection de Liant ou Dépôt par Projection Laser, les procédés de dépôt par fabrication additive arc-fil. [65] The deposition of material can be done according to a process chosen from reloading processes, electron beam fusion processes, laser fusion processes on a metal powder bed or "selective laser melting", selective laser sintering, direct metal deposition or “Direct Energy Deposition” processes, deposition processes by Binder Projection or Laser Projection Deposition, deposition processes by arc-wire additive manufacturing.
[66]Après dépôt de matière de façon à réaliser le segment, l’élément tubulaire peut être usiné au niveau de l’extrémité distale afin de réaliser une surface de butée. [66]After deposition of material so as to produce the segment, the tubular element can be machined at the distal end in order to produce an abutment surface.

Claims

Revendications Claims
[Revendication 1] Elément tubulaire (2, 20, 30, 40) comprenant un corps (4), le corps comportant une première surface (3, 43) sur laquelle est ménagée un filetage (5, 45), une deuxième surface (7, 47) radialement opposée à la première surface (3, 43), une surface d’étanchéité (10, 50) située sur la première surface (3, 43), ledit corps (4) étant dans un acier ayant une première limite d’élasticité Ysl, l’élément tubulaire comprenant un segment (11, 21, 31, 41) s’étendant radialement depuis la deuxième surface (7, 47) au droit de la surface d’étanchéité (10, 50), le segment(ll, 21, 31, 41) présentant une surface de contact radial avec le corps (4) au droit de la surface d’étanchéité (10, 50), ledit segment (11, 21, 31, 41) ayant une deuxième limite d’élasticité Ys2 plus grande que la première limite d’élasticité Ysl de manière à renforcer la rigidité structurelle de l’élément tubulaire (2, 20, 30, 40) au droit de ladite surface d’étanchéité (10, 50). [Claim 1] Tubular element (2, 20, 30, 40) comprising a body (4), the body comprising a first surface (3, 43) on which is provided a thread (5, 45), a second surface (7 , 47) radially opposite the first surface (3, 43), a sealing surface (10, 50) located on the first surface (3, 43), said body (4) being of a steel having a first limit of elasticity Ysl, the tubular element comprising a segment (11, 21, 31, 41) extending radially from the second surface (7, 47) in line with the sealing surface (10, 50), the segment ( 11, 21, 31, 41) having a radial contact surface with the body (4) in line with the sealing surface (10, 50), said segment (11, 21, 31, 41) having a second limit d elasticity Ys2 greater than the first elastic limit Ysl so as to reinforce the structural rigidity of the tubular element (2, 20, 30, 40) in line with said sealing surface (10, 50).
[Revendication 2] Elément tubulaire (2, 20, 30, 40) selon la revendication 1 comprenant une extrémité distale (8, 28, 38, 48), et dans lequel la surface d’étanchéité (10, 50) est située axialement entre le filetage (5, 45), et l’extrémité distale (8, 28, 38, 48). [Claim 2] A tubular element (2, 20, 30, 40) according to claim 1 comprising a distal end (8, 28, 38, 48), and wherein the sealing surface (10, 50) is located axially between the thread (5, 45), and the distal end (8, 28, 38, 48).
[Revendication 3] Elément tubulaire selon la revendication 2 dans lequel l’extrémité distale (8, 28, 38, 48) comprend une surface de butée (9, 29, 39, 49) et le segment (11, 21, 31, 41) s’étend axialement jusqu’à ladite surface de butée (9, 29, 39, 49) et comprend au moins une partie de la surface de butée (9, 29, 39, 49). [Claim 3] A tubular element according to claim 2 wherein the distal end (8, 28, 38, 48) comprises an abutment surface (9, 29, 39, 49) and the segment (11, 21, 31, 41 ) extends axially to said abutment surface (9, 29, 39, 49) and includes at least a part of the abutment surface (9, 29, 39, 49).
[Revendication 4] Elément tubulaire selon l’une des revendications précédentes dans lequel la deuxième surface comporte un renfoncement (14, 24, 34, 44) et le segment (11, 21, 31, 41) est situé dans ledit renfoncement (14, 24, 34, 44). [Claim 4] Tubular element according to one of the preceding claims, in which the second surface comprises a recess (14, 24, 34, 44) and the segment (11, 21, 31, 41) is located in the said recess (14, 24, 34, 44).
[Revendication 5] Elément tubulaire selon l’une des revendications précédentes dans lequel la première limite d’élasticité Ysl et la deuxième limite d’élasticité Ys2 ont des valeurs notées [Ysl] [Ys2] telles que
Figure imgf000018_0005
et préférentiellement
Figure imgf000018_0004
[Ysl] [Claim 5] Tubular element according to one of the preceding claims, in which the first elastic limit Ysl and the second elastic limit Ys2 have values denoted [Ysl] [Ys2] such that
Figure imgf000018_0005
and preferably
Figure imgf000018_0004
[ysl]
[Revendication 6] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) est rapporté sur le corps (4) par fabrication additive. [Claim 6] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) is attached to the body (4) by additive manufacturing.
[Revendication 7] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) a une épaisseur radiale d’au moins 1,8 mm. [Claim 7] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) has a radial thickness of at least 1.8 mm.
[Revendication 8] Elément tubulaire selon l’une des revendications précédentes, dans lequel le segment (11, 21, 31, 41) a une épaisseur radiale diminuant en s’éloignant de l’extrémité distale (8, 28, 38, 48).[Claim 8] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) has a radial thickness which decreases away from the distal end (8, 28, 38, 48). .
[Revendication 9] Elément tubulaire selon la revendication 8 dans lequel le segment (11, 21, 31, 41) a une épaisseur Ep supérieure ou égale à une épaisseur minimale Epmin telle que : [Claim 9] Tubular element according to claim 8 in which the segment (11, 21, 31, 41) has a thickness Ep greater than or equal to a minimum thickness Ep m in such that:
[Math 8]
Figure imgf000018_0001
[Math 8]
Figure imgf000018_0001
[Revendication 10] Elément tubulaire selon l’une des revendications 7 ou 9 dans lequel le segment (11, 21, 31, 41) a une épaisseur Ep inférieure ou égale à une épaisseur maximale Epmax telle que Epmax = Min (Eplmax ; Ep2max) ; où : [Claim 10] Tubular element according to one of Claims 7 or 9, in which the segment (11, 21, 31, 41) has a thickness Ep less than or equal to a maximum thickness Epmax such that Epmax = Min (Eplmax; Ep2max) ; where :
[Math 9]
Figure imgf000018_0002
[Math 9]
Figure imgf000018_0002
Et And
[Math 10]
Figure imgf000018_0003
[Math 10]
Figure imgf000018_0003
[Revendication 11] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) est situé à une distance radiale d’au moins 1,5 mm de la surface d’étanchéité (10, 50).[Claim 11] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) is located at a radial distance of at least 1.5 mm from the sealing surface (10, 50 ).
[Revendication 12] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) a une longueur axiale d’au moins 4 mm. [Claim 12] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) has an axial length of at least 4 mm.
[Revendication 13] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) a une longueur axiale au moins égale à une longueur axiale de la surface d’étanchéité (50, 10) additionnée d’au moins 4 mm. [Claim 13] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) has an axial length at least equal to an axial length of the sealing surface (50, 10) plus at least 4 mm.
[Revendication 14] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) est dans un métal choisi parmi les aciers alliés, fortement alliés, alliages cupro-nickel, alliages de titane, céramiques, vitrocéramiques, ou cuivre, cupronickel, stellite, ferrochrome. [Claim 14] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) is made of a metal chosen from alloy steels, high alloy steels, cupro-nickel alloys, titanium alloys, ceramics, vitroceramics, or copper, cupronickel, stellite, ferrochrome.
[Revendication 15] Elément tubulaire selon l’une des revendications précédentes dans lequel le segment (11, 21, 31, 41) est dans le même métal que le métal du corps (4). [Claim 15] Tubular element according to one of the preceding claims, in which the segment (11, 21, 31, 41) is made of the same metal as the metal of the body (4).
[Revendication 16] Procédé pour obtenir l’élément tubulaire de l’une des revendications précédentes caractérisé en ce qu’il comprend une étape de réalisation du segment (11, 21, 31, 41) par un procédé choisi parmi les procédés de rechargement, les procédés de fusion par faisceau d’électrons, les procédés de fusion laser sur lit de poudre métallique ou « sélective laser melting », les procédés de frittage sélectif par laser, les procédés de dépôt métallique direct ou « Direct Energy Déposition », les procédés de Dépôt par Projection de Liant ou Dépôt par Projection Laser, les procédés de dépôt par fabrication additive arc-fil. [Claim 16] Method for obtaining the tubular element of one of the preceding claims, characterized in that it comprises a step of producing the segment (11, 21, 31, 41) by a method chosen from among the methods of hardfacing, electron beam melting processes, laser melting processes on a metal powder bed or "selective laser melting", selective laser sintering processes, direct metal deposition processes or "Direct Energy Deposition", processes Deposition by Binder Projection or Deposition by Laser Projection, arc-wire additive manufacturing deposition processes.
PCT/FR2022/050297 2021-03-03 2022-02-18 Segmented threaded tubular element WO2022184992A1 (en)

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FR2102047A FR3120416A1 (en) 2021-03-03 2021-03-03 Segment threaded tubular element
FRFR2102047 2021-03-03

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WO2022184992A1 true WO2022184992A1 (en) 2022-09-09

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010043509A1 (en) * 2008-10-15 2010-04-22 Vallourec Mannesmann Oil & Gas France Component for the drilling and for the exploitation of hydrocarbon wells
FR3040731A1 (en) * 2015-09-07 2017-03-10 Vallourec Oil & Gas France PRESSURE TEST CAP FOR SUPERIOR TUBULAR THREADED COMPONENT
FR3098272A1 (en) * 2019-07-01 2021-01-08 Vallourec Oil And Gas France THREADED JOINT WITH SHOULDER MADE BY ADDITIVE MANUFACTURING

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010043509A1 (en) * 2008-10-15 2010-04-22 Vallourec Mannesmann Oil & Gas France Component for the drilling and for the exploitation of hydrocarbon wells
FR3040731A1 (en) * 2015-09-07 2017-03-10 Vallourec Oil & Gas France PRESSURE TEST CAP FOR SUPERIOR TUBULAR THREADED COMPONENT
FR3098272A1 (en) * 2019-07-01 2021-01-08 Vallourec Oil And Gas France THREADED JOINT WITH SHOULDER MADE BY ADDITIVE MANUFACTURING

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AR126037A1 (en) 2023-09-06
FR3120416A1 (en) 2022-09-09

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