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
  • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
  • F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface
• • 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
• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P10/00—Technologies related to metal processing
  • Y02P10/25—Process efficiency

Definitions

• the invention relates to threaded tubular steel components and more particularly to a tubular threaded joint comprising a shoulder produced by additive manufacturing, for drilling, operating hydrocarbon wells or for transporting oil and gas.
• component is understood here to mean any element or accessory used to drill or operate a well and comprising at least one connection or connector or even threaded end, and intended to be assembled by a thread to another component in order to constitute with this other component a tubular threaded joint.
• the component can be for example a tubular element of relatively great length (in particular about ten meters in length), for example a tube, or else a tubular sleeve of a few tens of centimeters in length, or else an accessory of these. tubular elements (suspension device or "hanger”, part for changing section or “cross-over”, safety valve, connector for drill rod or "tool joint", “sub”, and the like).
• Tubular joints have threaded ends. These threaded ends are complementary allowing the connection of two male (“Pin”) and female (“Box”) tubular elements together. There is therefore a male threaded end and a female threaded end. So-called premium or semi-premium threaded ends generally have at least one abutment surface.
• a first stop may be formed by two surfaces of two threaded ends, oriented substantially radially, configured so as to be in contact with each other after screwing the threaded ends together or during stresses from compression. The stops generally have negative angles to the main axis of the connections. Intermediate stops are also known on joints comprising at least two stages of threading.
• the radial deformation of the lip can cause loss of structural integrity in compression and snagging of tools displaced internally in the tubes.
• the arrangement of the leakage concavity is made by means of direct drilling of the tube, for example by turning.
• Patent WO2013108931 is known from the state of the art, which discloses a connector assembly for interconnecting tubular elements. This document discloses several passages arranged in the abutment surface
• Direct drilling therefore has several drawbacks, namely reducing the admissible torque for example of the order of -10% because of a consequent loss of material.
• machining along a complex abutment surface of this type of channel requires adopting a cutting tool path which deteriorates the cutting tool and increases the risk of creating burrs associated with cutting the material, increasing the risk of galling.
• the object of the present invention is to resolve the problems of the state of the art cited, by producing a part added by additive manufacturing.
• the invention therefore consists of a threaded tubular joint (1) for drilling, operating hydrocarbon wells or transporting oil and gas comprising a male threaded tubular element (2) and a female threaded tubular element (3 ), the female threaded tubular member (3) comprising a female inner threaded portion (5) and a female unthreaded portion (6), the male threaded tubular member comprising a male outer threaded portion (7) and an unthreaded portion male (8), characterized in that the male (2) or female (3) tubular element comprises a body (4) and an additive part (9) which comprises at least a first abutment surface.
• the tubular threaded joint (1) in which said first abutment surface is an inner (10a) or outer (10b) male abutment surface, or an inner (11a) or outer (11b) female abutment surface. ), said inner or outer male abutment surface being adapted to come into contact with a corresponding female abutment surface, characterized in that the unthreaded male part (8) or the unthreaded female part (6) comprises at least one lip interior (12a) or exterior (12b) added by additive manufacturing.
• the tubular threaded joint is characterized in that the added part (9) is produced by additive manufacturing by recharging, by electron beam melting, by laser melting on a bed of metal powder or "selective laser melting. ", By selective laser sintering, by direct metal deposition or” Direct Energy Deposition ", by Binder Projection Deposition or Laser Projection Deposition, by arc-wire additive manufacturing deposition.
• the tubular threaded joint (1) is characterized in that the added part has a hardness greater than the hardness of the body (4) over at least 1 mm in depth.
• the tubular threaded joint (1) is characterized in that the added part has a coefficient of friction greater than the body (4). According to one embodiment, the tubular threaded joint (1) is characterized in that the added part (9) comprises a metal chosen from alloy steels, highly alloyed, cupro nickel alloy.
• the threaded tubular joint (1) is characterized in that each of the male (2) and female (S) tubular elements have a frusto-conical and / or toric metal-to-metal (15) sealing surface. on one side and on the other side the contact between the male (10a) and female (11a) abutment surfaces thus delimiting a closed space (1S).
• the tubular threaded joint (1) is characterized in that the added part (9) comprises at least one channel (17).
• the tubular threaded joint (1) is characterized in that the channel (17) extends from a surface delimiting a closed male space (14a) or a surface delimiting a closed female space (14b) up to to a male interior side surface (18a) or a female interior side surface (18b) or to a male exterior side surface (19a) or a female exterior side surface (19b).
• the tubular threaded joint (1) is characterized in that the channel (17) is at a predetermined distance of at least 2 mm from the abutment surface in contact in the assembled state of the joint.
• the tubular threaded joint (1) is characterized in that the channel (17) is at a predetermined distance of at least 2.5 times the diameter of the circumscribed circle of a section of the channel with respect to the abutment surfaces in contact in the assembled state of the seal.
• the tubular threaded joint (1) is characterized in that the channel (17) extends on the surface of the male or female stop.
• the tubular threaded joint (1) is characterized in that the channel (17) is located in the added part in such a way that it opens out on the one hand into the closed space (13) nearby of the abutment surface and opens out on the other hand to a side surface.
• the tubular threaded joint (1) is characterized in that a channel (17) extends linearly, axially, radially or in combination. According to one embodiment, the tubular threaded joint (1) is characterized in that the depth of the added part comprising the channel (17) corresponds to at least 4 times the circumscribed diameter of the section of the channel.
• the invention also comprises a process for producing the added part by additive manufacturing according to the following description:
• a process for obtaining a tubular threaded joint in that the added part (9) is produced by a process selected from hardfacing processes, electron beam fusion processes, metal powder bed laser fusion processes or "Selective laser melting", selective laser sintering processes, direct metal deposition or “Direct Energy Deposition” processes, Binder Projection Deposition or Laser Projection deposition processes, arc-additive manufacturing deposition processes wire.
• tests have been carried out with materials of the Fero 55 and stellite type with a direct metal deposition process.
• the added part (9) can be made with materials of the cupro-nickel alloy or micro-alloy steel type, for example using an additive “Arc-wire” technique.
• FIG 1 describes schematically, in a longitudinal sectional view, a tubular threaded joint according to a first embodiment in which the added part of the male tubular element is produced by additive manufacturing.
• FIG 2 schematically depicts, in a longitudinal sectional view, a tubular thread joint according to a variation of the first embodiment in which the added portion of the male threaded tubular member comprises a depth channel.
• FIG B describes schematically, in a longitudinal sectional view, a tubular threaded joint according to a second embodiment, in which the female stopper is produced by additive manufacturing and comprises a channel located in the added part.
• FIG 4a schematically shows, in perspective, a tubular threaded joint according to the invention.
• FIG 4b schematically describes, in plan view (yOz), the arrangements of a channel in the added part of a male threaded tubular element.
• FIG 4c describes schematically, in plan view (xOz), the arrangements of a channel at the level of a lip of a male element in accordance with the invention.
• FIG 4d describes schematically, in plan view (xOz), the arrangements of a channel at the level of a lip of a female element in accordance with the invention.
• FIG 5 describes schematically, in a longitudinal sectional view, a tubular threaded joint according to the invention in which the female outer stop surface comprises an added part produced by additive manufacturing.
• FIG 6 describes schematically, in a longitudinal sectional view, a tubular threaded joint according to the invention in which the outer male abutment surface comprises an added part produced by additive manufacturing.
• FIG 7 describes schematically, in a longitudinal sectional view, a tubular threaded joint according to a variant of Figure 5 in which the added part produced by additive manufacturing includes a channel.
• FIG 8 describes schematically, in a longitudinal sectional view, a tubular threaded joint according to a variant of Figure 6 in which the added part produced by additive manufacturing includes a channel.
• Figure 1 depicts a tubular threaded joint (1) with an added part (9) on a male tubular member (2).
• This added part (9) is produced by additive manufacturing and has a substantially axial depth “P”.
• the tubular threaded joint (1) comprises inner male (10a) and female (11a) abutment surfaces in contact which interfere with the mounted state of the joint. These stop surfaces make it possible to create a high tightening torque so as to prevent unwanted unscrewing and to allow stressing of other functional surfaces of the seal. These contacting abutment surfaces can establish a certain seal against liquids or gases, especially when the seal is subjected to compressive stress. This sealing is not desired by the designer, but undergone.
• the tubular thread seal (1) further includes male and female metal-to-metal sealing surfaces providing a metal-to-metal seal (15).
• This metal-to-metal seal (15) provides a seal in the assembled state of the seal and during use of the seal in a wide spectrum of stresses exerted on the seal, such as internal pressure, external pressure, compressive forces, pressure forces. traction. It can be seen in Figure 1 that the grease, fluids, gas or any other similar product fit into a closed space (13) defined by the metal-to-metal seal (15) on one side, and on the other side the male (10a) and female (11a) stop surfaces.
• the metal-to-metal sealing surface (15) is absent and a seal is produced by the female (5) and male (7) threads in the screwed state.
• the closed space (13) is therefore delimited on the one hand by the stop surfaces (10a, 10b, 11a, 11b) and the female (5) and male (7) threads.
• the added part (9) is produced by additive manufacturing in such a way that the hardness is greater than or equal to that of the non-added part, that is to say the body (4 ) male or female.
• the added part (9) is produced by additive manufacturing in such a way that the coefficient of friction is greater than that of the male or female body (4).
• the invention also makes it possible to significantly increase the coefficient of friction between the part added by additive manufacturing and the material of the body of the corresponding tubular element, in comparison with the coefficient of friction of the bodies of the male and female tubular element between them.
• An increase in the coefficient of friction is accompanied by an increase in the value of the screwing torque applicable when connecting two threaded tubular elements.
• the hardness depends in particular on the type of material used, but the materials can be selected in such a way that the hardness is greater in the added part (9) compared to the male or female body (4).
• the added part (9) comprises a metal chosen from alloy steels, highly alloyed steels or a cupro-nickel alloy.
• additive manufacturing makes it possible both to very easily fit out an internal cavity, a channel or any other passageway, but also to significantly reduce, in the event of said passageways being fitted, the losses of material compared to a direct intervention for example by drilling as well as production waste.
• it makes it possible to generate narrow and short passageways unlike what is possible from the state of the art, in particular by drilling.
• the invention makes it possible to reduce costly machining operations.
• the invention makes it possible to increase and improve the geometric complexity of the element obtained through a construction method layer by layer.
• Figure 2 describes similarly to Figure 1, a male tubular element, in which the added part (9) produced by additive manufacturing this time comprises a channel or any other passageway, according to diameters that are both controllable and more or less reduced to avoid weakening of the added part (9) due to excess material shrinkage, too wide or too long a channel.
• tubular threaded seal is permeable so as to reduce the risks of the presence or appearance of an overpressure in a closed space of the threaded seal, confined by surfaces providing seals.
• permeable is understood to mean any means making it possible to generate passageways made in the end of a male or female tubular component so as to communicate a closed space to the connection and a space external to the connection, which can result in by one or more channels having a predetermined size.
• a channel has a width or a minimum diameter of 0.2 mm.
• This channel can vary in space according to the planes (yOz), (xOz) or (xOy).
• the channel is planned at the time of the design of the added part during the additive manufacturing of the added part. This eliminates the need for direct installation or drilling as well as the associated drawbacks.
• the threaded tubular joint is characterized in that the thickness of the deposit must correspond to at least 4 times the diameter of the circumscribed diameter of the section of the channel. It is essential to respect this condition to avoid generating excessive weakening constraints due to the channel.
• a deposit respecting this parameter makes it possible precisely to prevent the channel fitted out by additive manufacturing from generating too great a concentration of stresses around said channel and therefore to limit the risk of plasticization of material to a zone near the channel.
• a channel arranged by additive manufacturing allows diffusion between the closed space (1S) and a side surface.
• said side surface is either a male inner side surface, or a female inner side surface, or a male outer side surface or a female outer surface.
• FIG. 3 describes in a manner analogous to FIG. 2, according to a second embodiment, a female tubular element, in which the added part (9) produced by additive manufacturing comprises a channel.
• the channel is provided during the design of the added part (9) so as to connect the closed space (13) to the female inner side surface (18b).
• the invention fulfills the objective of allowing grease, fluids, gases or any other similar embedded product to be able to escape and free the closed space ( 13). Since this time the male lip does not have a channel, the question of constraints no longer arises for the male element. It does not arise or much less when it comes to the female abutment surface because the channel is arranged so as to be located on the unconstrained part (ie zone free from the strong stresses generated by the contact between abutments).
• the tubular threaded joint is characterized in that the thickness of the deposit must correspond to at least 4 times the diameter of the circumscribed diameter of the section of the channel.
• the thickness of the deposit must correspond to at least 4 times the diameter of the circumscribed diameter of the section of the channel.
• Figures 4b and 4c show schematically the different possible arrangements for a channel (17) of a male tubular element (2).
• a channel (17) at least 0.2mm wide in depth, with a thickness "d" around said channel which must be greater than 2 times the diameter of the same channel.
• FIG. 4c the channel (17) is this time at the level of the inner (10a) or outer (10b) male stop surface of the male tubular element (2).
• FIG. 4d describes, in a manner analogous to FIG. 4c, a channel (17) at the level of the internal (11a) or external (11b) female stop surface of the female tubular element (3).
• Figures 5 and 6 describe variants of the invention, according to a mirror configuration of Figures 1, 2 and 3, in which the added part (9) produced by additive manufacturing is located at the level of the outer lateral part of a tubular threaded joint (1) is at the level of the outer female stop surface (11b) for FIG. 5 or the outer male abutment surface (10b) for fig. 6.
• FIG. 7 describes a variant of FIG. 5 in which the added part (9) produced by additive manufacturing comprises a channel (17) or any other diffusion means.
• FIG. 8 describes a variant of FIG. 6 in which the added part (9) produced by additive manufacturing comprises a channel (17) or any other diffusion means.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=69157910

Family Applications (1)

Country Status (8)

Families Citing this family (3)

Family Cites Families (21)

• 2019
  • 2019-07-01 FR FR1907277A patent/FR3098272B1/fr active Active
• 2020
  • 2020-06-29 US US17/623,779 patent/US20220243845A1/en not_active Abandoned
  • 2020-06-29 WO PCT/EP2020/068251 patent/WO2021001314A1/fr active Search and Examination
  • 2020-06-29 BR BR112021025552A patent/BR112021025552A2/pt not_active Application Discontinuation
  • 2020-06-29 EP EP20735554.6A patent/EP3994382A1/de not_active Withdrawn
  • 2020-06-29 CN CN202080048713.9A patent/CN114222880A/zh active Pending
  • 2020-06-29 MX MX2021015618A patent/MX2021015618A/es unknown
  • 2020-07-01 AR ARP200101865A patent/AR119329A1/es unknown

Also Published As

Similar Documents

Legal Events