• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Protector 1 temporary one end of a tubular joint component for drilling or exploitation of hydrocarbon wells, said end having at least one thread and at least one free end portion, and said component comprising a downstream body the threaded end, said protector 1 comprising a sleeve 2, intended to be attached to the end of the component and shaped to protect said free end portion and the thread of said end of the component, said sleeve 2 having a thread 24 adapted to contact with the thread of the end of the component and extending axially over a distance less than or equal to the axial distance of the thread of the end of the component, and a peripheral sealing device 4 sealingly mounted on the sleeve 2 and adapted to be placed in contact with a surface of said component located downstream of the thread of the end of the component, so as to ensure sealing downstream of said thread, the sealing device 4 and the sleeve 2 being arranged such that during the introduction of the protector on the tubular component, at the moment when the thread 24 of the sleeve 2 engages with the threading the end of the tubular joint component, at least a portion of the sealing device 4 intended to come into contact with the surface of said component, is located axially downstream of the thread of the end of said component.
    公开号:FR3030670A1
    申请号:FR1550053
    申请日:2015-01-06
    公开日:2016-06-24
    发明作者:Mendez Jose Antonio Aguilar；Julie Felix；Daniel Viel
    申请人:Vallourec Oil and Gas France SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to tubular threaded joint components used, for example, in petroleum applications, and more specifically to the protection of the end of a tubular threaded joint. some of these components. Here, the term "component" means any element or accessory used to drill or operate a well and intended to be assembled by a thread to another component to constitute with this other component a tubular threaded joint. The component may be for example a tube of relatively great length (in particular about ten meters in length), a tubular sleeve of a few tens of centimeters in length, an accessory of these tubes (suspension device or "hanger", cross-over part, safety valve, drill pipe connector or "tool joint", "sub", and the like). The components are generally assembled together to be lowered into hydrocarbon wells or similar wells and form a drill string, a casing string or liners. still a column of production tubes ("tubing") (operating columns). The API 5CT specification issued by the American Petroleum Institute (API), equivalent to ISO 11960: 2004 issued by the International Standardization Organization 25 (ISO), governs tubes used as casing or tubing, and the API 5B specification defines standard threads for these tubes. API Specification 7 defines threaded shoulder connectors for rotary drill rods. Manufacturers of tubular threaded joint components have also developed so-called upper threaded joints which have specific thread geometries, and specific means giving them better performance in service, especially in terms of mechanical strength and sealing. The aforementioned components have at least one male or female threaded end which is intended to be screwed to a corresponding female or male threaded end of another drilling or operating component. It is therefore essential that their threaded end, male or female, is the least possible damaged, polluted and deteriorated between the moment they leave their production line and the one where they are used, but also between two successive uses. It will be understood that it is indeed necessary to protect against corrosion, dust and shocks (or shots) not only the threading, but also any bearing (s) and stop (s) which each have specific functions and complementary, especially in order to ensure a tightness during the use phase. For protection purposes, the ends of the aforementioned components were generally coated just prior to assembly with a grease with anti-seize properties. It has been proposed in several documents to replace the grease with a thin layer of lubricant, of predetermined thickness, applied at the factory. Thus, for example, US 6,933,264, US 6,869,111 and WO 2003/102457 propose to apply in the factory a layer of a "semi-dry" lubricant free of heavy metals. Documents US 6,027,145, EP 1211451 and FR 2892174 propose the application of a layer of a dry lubricant based on solid lubricant particles. In these cases of application of a lubricant in the factory, it is also and more particularly necessary to protect as much as possible the lubricant layer, the ends of the components of which are coated, both mechanical removal and pollution (sand, debris) detrimental to the effectiveness of the lubricant product.
    [0002] In order to obtain this protection (s), the API 5CT specification (Section 12.2) generally requires a protective device on the male and female ends of the tubular threaded joint components.
    [0003] In general, a tubular threaded gasket component threaded end protector for drilling or operating hydrocarbon wells includes a protective sleeve for covering the threads to be protected, associated with one or more devices of the invention. seal.
    [0004] The standard provides that the protector protects the ends against damage that may occur under normal handling and transport conditions of the component. The external protectors (for male ends) cover the entire thread on the tubular component and the internal protectors (for female ends), in an equivalent manner, cover the entire internal thread.
    [0005] In particular, guards should normally be designed to prevent the ingress of dust and water from threads during transport and storage. The normal storage period is approximately one year.
    [0006] The shape of the threads of the protectors is such that the threads of the tubular component are preserved by the protector. Several devices of this type have been proposed, in particular in EP 0148807, US 2006/0042709, WO 2005/075877 and WO 2005/024282, the last three documents relating more particularly the seal protectors previously coated with lubricant in the factory. It has been shown that some of them present a risk of damaging the protection device during installation. WO2012 / 028692 provides an elastomeric film between the protector and the component, attached to the protector by gluing or by embedding ring, the ring being welded to the protector. The film is provided with a sliding agent between the film and the component. The film is interfering with the area of imperfect threads of the component. The film is torn during removal of the protector and therefore for single use. The seal is weak. The set is difficult to mount on the component. The risks of damage to the film are high. It has been found that, during the introduction of the protector, the sealing device 5 could be damaged, or even torn off, by the thread of the tubular component. Indeed, the machined net has particularly sharp edges which, during the screwing movement of the connector, can notch said sealing device. In addition, such cuts can result in the formation of chips that are likely to remain stuck in the net and pollute it, which is undesirable. The object of the invention is to improve the situation, and proposes for this purpose a temporary protector of one end of a tubular joint component for drilling or exploitation of hydrocarbon wells, said end having at least one thread 15 and at least one free end portion, and said component comprising a body downstream of the threaded end, said protector comprising: - a sleeve, intended to be attached to the end of the component and shaped to protect said free end portion and threading said end of the component, said sleeve having a thread adapted to engage the thread of the end of the component, and extending axially a distance less than or equal to the axial distance of the thread of the thread. end of the component, - a peripheral sealing device sealingly mounted on the sleeve and adapted to be placed in contact with a surface of said component located in downstream of the thread of the end of the component, so as to ensure a seal downstream of said thread. The protector is characterized in that the sealing device and the sleeve are arranged in such a way that when the protector is placed on the tubular component, at the moment when the thread of the sleeve engages with the thread of the end 30 of the tubular joint component, at least a portion of the sealing device intended to come into contact with the surface of said component, is located axially downstream of the thread of the end of said component.
    [0007] The term "downstream" is here considered with respect to the free end portion of the end considered as upstream. Thus, the downstream of the thread corresponds to a running part or body of the component.
    [0008] Thus, by providing that the part of the sealing device, or seal, intended to be in sealing contact with the tubular component, is offset downstream of the thread, that is to say facing the body, generally smooth, the component when the thread of the sleeve begins to engage with the thread of the end of said tubular component, said portion of the sealing device is preserved from shearing by the thread of said threaded component during screwing. When screwing is imposed on the sleeve a translational movement combined with a rotational movement. More specifically, during a first phase of placing the protector, it is displaced in translation substantially in a longitudinal direction of the tubular component until the thread of the sleeve comes into contact with the thread of the tubular component. . During this first phase, the part of the sealing device intended to be in sealing contact with the tubular component, then also moves in translation along the same longitudinal direction until it comes downstream of the thread of the tubular component and is located next to the smooth body of the component. The notion of "smooth" means here a lack of voluntary asperity or sharp stop. The concept of "smooth" is understood as a known roughness surface compatible for sealing with an elastic lip. The roughness may have come from rolling. The roughness can be that of a coating of the component core. The protector is then screwed onto the threaded end of the component to be protected during a second phase. During this subsequent screwing, the rotation of the portion of the sealing device intended to be in sealing contact with the tubular component is thus carried out integrally in contact with a zone of the body of the tubular component, downstream of the thread and generally smooth. Shearing by said threading is avoided. According to a preferred embodiment, the sleeve has downstream of its thread a length greater than the length of the thread of the tubular component to be protected. The portion of the sealing device intended to come into contact with the surface of the component is located substantially at a downstream end of said sleeve. Thus, by lengthening the sleeve, the general constitution of the protector remains relatively simple, and its manufacture remains easy.
    [0009] For a female end, the length of the thread of the sleeve and the downstream portion of the thread may be greater than the sum of the length (in projection on the axis) of the thread of the end to be protected and the axial distance between said thread and an abutment surface connecting to the bore of the component body.
    [0010] Preferably, the ratio of the axial distance of the thread of the tubular component to the axial distance of the thread of the sleeve of the protector is greater than or equal to 2, preferably greater than or equal to 3.
    [0011] Advantageously, the sealing device is integral with the sleeve. By making the sealing device integral with the sleeve, that is to say not detachable, the risk of loss of the device is avoided.
    [0012] According to one embodiment, the sealing device is secured to the sleeve by overmolding. Overmolding allows in particular a good association between the sealing material material and the material of the sleeve. Preferably, the sealing device is secured to the sleeve by overmolding implemented by two-component injection.
    [0013] Advantageously complementary, the protector comprises a secondary sealing device adapted to be placed in contact, on the one hand, with a surface of said component, at least in the free end portion of the end of the component, and secondly, said sleeve so as to ensure a seal upstream of said thread.
    [0014] The additional advantageous features related to the first sealing device can also be applied to the secondary sealing device. Thus, the secondary sealing device may in particular be secured to the sleeve, and / or overmoulded on the sleeve.
    [0015] Advantageously complementary, the contact surface of the sealing device with the sleeve is greater than 10% of the total length of the sleeve, preferably greater than 20%. A large overlap between the sealing device and the sleeve makes it possible to further improve the resistance of the sealing device to the sleeve and provides additional protection, the sealing device being able to absorb at least a part of any external shocks. Said contact surface reduces the risk of accidental tearing of the sealing device when the sealing device is made by overmolding on the sleeve.
    [0016] Advantageously complementary, the sealing device comprises at least one flap extending at least above the portion of the sealing device intended to come into contact with the surface of the component so as to protect it at least partially from the light. Such a shutter is a screen to protect to a certain extent the seal portion of the sealing device of the sunlight, and in particular ultraviolet rays may accelerate its aging and affect its elastic joint properties. The life of the sealing device can be extended beyond the life of the UV-exposed material.
    [0017] Advantageously, the portion of the sealing device intended to come into contact with the surface of the tubular component is elastically flexible in at least one longitudinal axial direction of the protector. Said part may be radially elastic. The implementation of such a flexible part allows the seal to easily adapt to the slight surface irregularities of the tubular component. During the introduction of the protector, the flexible portion is thus caused to bend on itself and to adapt to the diameter of the component. The setting up of the protector remains easy. Alternatively, the portion of the sealing device intended to come into contact with the surface of the tubular component has a beveled contact surface and a longitudinal section which increases from downstream to upstream. The presence of a beveled portion also allows adaptation to variations in the diameter of the tubular component. According to a first preferred embodiment, the protector is designed for a male end having an external thread. According to a second preferred embodiment, the protector is designed for a female end having an internal thread. The present invention also relates to a kit of a protector described above and comprising at least one sleeve and at least one associated sealing device. The present invention further relates to a tubular threaded joint component for drilling or operating hydrocarbon wells, comprising an end provided with at least one thread and comprising a free end portion, said component being equipped with a protector described above screwed onto said thread of said tubular component. Other characteristics and advantages of the invention will become apparent on examining the following detailed description and the accompanying drawings, in which: FIG. 1 is a diagrammatic representation in longitudinal section of a protector according to a first embodiment; - Figure 2 is a partial schematic representation in longitudinal section of a downstream end of a protector according to a second embodiment; - Figure 3 is a representation of an alternative embodiment of the protector of Figure 2 comprising a protective flap of the sealing device; FIG. 4 is a representation of a second variant embodiment of the embodiment of FIG. 2; - Figures 5 and 6 are partial schematic representations in longitudinal section of a downstream end of a protector according to a third embodiment; and FIGS. 7a and 7b are diagrammatic longitudinal half-section representations of a protector according to a fourth embodiment. The attached drawings may not only serve to complete the invention, but also contribute to its definition, if any.
    [0018] A protector is intended to allow the protection of the threaded end of a tubular component of a tubular threaded joint (for drilling or operating hydrocarbon wells or the like) against mechanical damage, pollution ( chemical and material) and the deterioration (corrosion) between the manufacturing outlet and the use (with several possible assembling-dismantling of the protection device), but also between two successive uses, limiting (or even avoiding) scraping and / or the elimination of the storage lubricant (anticorrosion) and / or screwing product, more particularly when said lubricating product is applied permanently (semi-dry or dry type lubricant product presented above), despite the dimensional variations of the tubular component (especially its outer diameter). There are protectors for male threaded ends (external thread) and protectors for female threaded ends (internal thread).
    [0019] In order to facilitate the assembly of the protector and in particular the fitting of the sleeve on the threaded end, the known sealing device was generally detachable, the assembly of the sealing device and the sleeve being effected after their set up on the component to be protected. The detachable nature of the sealing device entails a risk of loss, especially during various manipulations of the component.
    [0020] Furthermore, the detachable character of the sealing device also causes difficulties to ensure optimum sealing between the sleeve and the metal surface of the component, in particular due to manufacturing imperfections on the surface of the component. It may then be necessary to deform the protector to seal.
    [0021] W02008 / 087302 offers protection by half-shells with clamping. A seal of quality is obtained but the number of pieces is high. In the application FR 2 998 639, the Applicant has proposed a protection device offering a better adaptability of the seal to the dimensional deviations of the components while remaining relatively easy to assemble. To do this, a sealing device is rolled up on the sleeve before being unrolled on the tubular component once the sleeve is in place. This results in a relatively more complex and slow installation of the protector. Furthermore, the realization of a roll-up sealing device requires a larger amount of elastomer. In the following it is considered that the component is intended for the drilling or the exploitation of hydrocarbon wells and that it is equipped with one end of a threaded tubular threaded connection of the VAM® family or equivalent. However, the protector according to the present application is limited neither to this type of component nor to the aforementioned type of end. The invention relates in fact to any type of tubular threaded joint component for drilling or operation and any type of threaded end component and in particular those of API type and those of higher type ("premium"), such as Tubular threaded joints VAM.30 A tubular component comprises a body or running part and two ends: two male ends, a male end and a female end, or two female ends. The component is generally made of steel or stainless steel.
    [0022] The body includes a bore coming from rolling. The bore of the body may have a coated inner surface, for example an anticorrosive coating. The surfaces coming from rolling have a roughness and diametric tolerance much greater than the roughness and diametrical tolerance of the machined surfaces. The bore of the body may extend to an axial position different from the axial position to which the outer surface of the body extends. A male end has at least one external thread and at least one free end portion, the body of the tubular component extending downstream of the male end. More specifically, the term "male end" means the portion of a component provided with machined and / or rectified surfaces to form a seal with a corresponding female portion. A female end has at least one internal thread and at least one free end portion, the body of the tubular component extending downstream of said female end. The outer or inner end threads may be in one or more separate threaded portions disposed in cylindrical or conical surfaces. When the threaded portion or portion is tapered, it may be subdivided into a so-called perfect threaded sub-part, whose profile is constant and without irregularity or imperfection (for example of the burr type) and a so-called threaded subpart. fading or imperfect, 30 whose height is gradually decreasing and whose profile may have irregularities or imperfections.
    [0023] The end threads may comprise at least two separate threaded portions spaced axially and / or radially from each other, each of these portions may comprise perfect threads and fading threads.
    [0024] The free end portion of the end of the component is generally terminated by an annular surface of substantially transverse orientation. The end, male or female, may also include one or more axial abutment surfaces for an end, respectively female or male, of another component intended to be assembled to the component in question (free end, downstream of the thread or between two threaded portions) and one or more metal / metal sealing surfaces (at the free end, downstream of the thread or between two threaded portions) with the end in question. The protector is preferably designed to also protect these abutment surfaces and / or these sealing surfaces from damage or injury and corrosion. The embodiments described below, by way of non-limiting example, relate to a male end of a tubular threaded joint.
    [0025] A protector 1, as shown in Figure 1, generally comprises a sleeve 2 and a sealing device 4 cooperating together and provided to be placed on the male end (threaded) of a component. The sleeve 2 is responsible for protecting at least part of the external thread of the male end and the free end portion also forming part of the male end. To do this, the sleeve 2 is intended to be attached to the end of the component and is shaped accordingly. In particular, the sleeve has a portion of generally tubular general shape.
    [0026] The sleeve 2 is preferably monoblock. The sleeve may, for example, be made by a material injection method.
    [0027] The protection is particularly mechanical, the sleeve 2 has a certain rigidity while being able to at least partially absorb shocks. To do this, the sleeve 2 may for example be made by injection of a thermoplastic material into a suitable mold. Among the various families of thermoplastic materials that can be advantageously used, there may be mentioned polycarbonate-based blends such as polycarbonate-polyester (PC / PBT or PC / PET) and polyethylenes (PE) with high or ultra high density ( PE-HD, PE-UHD). The API 5CT 2005 Edition specification provides in its Annex I requirements for 10 Thread Protection Devices, including minimum values of axial impact resistance and bias (at 45 °) for three temperatures (-46, +21 and + 66 ° C). For example, a PE-HD produced by the company DOW and sold under the name DMBA-8904-NT7 or produced by the company BASELL and sold under the name LUPOLEN 4261 AG UV 6005, a PE-UHD produced by the company TICONA and sold under the name GUR 5113, or a PC-PBT produced by the company BAYER and sold under the name MAKROBLEND S7916. The sleeve 2 comprises an upstream end portion 21 intended to be placed at the level of the free end portion of the tubular component, and preferably having a radially inward projecting collar 22, thick and adapted for the absorption of the shocks and knocks, and intended to cover the transverse annular surface at the end of the free end portion of the male end (abutment surface) to ensure a local (second) continuous seal over its entire circumference at this level. In one embodiment, from the flange 22 extends a partition 23 closing the sleeve on the opposite side of the sealing device 4. The partition 23 forms a plug and is adapted to penetrate the bore of the tubular component. More specifically, the partition 23 has a substantially U-shaped section with a radial portion 23a and a circular portion 23b connecting the radial portion 23a to the flange 22.
    [0028] Alternatively, as it is visible in the following embodiments, the partition 23 may be substantially rectilinear and flat, that is to say radial. The flange 22 and the partition 23 constitute a secondary seal.
    [0029] In one embodiment, said protector 1 comprises an annular peripheral lip. The annular peripheral lip may be integral with the sleeve or reported, in particular by overmolding an elastic material.
    [0030] This secondary sealing device is in particular placed in contact with a surface of said component, at least in the free end portion of the end of the component. This avoids the intrusion of foreign bodies such as sand, salt, water, on the side of the terminal part of the end of the component.
    [0031] In the case of a protector for a male end, the surface of said component is in particular an inner surface. In the case of a female end protector, the surface of said component is in particular an outer surface. Downstream of the end portion 21, the sleeve is provided, on an inner surface, with a thread 24 adapted to cooperate in complementary form with the thread of the end of the tubular component to be protected. More simply, the thread 24 is adapted to the thread of the end of the component to be protected. The thread 24 extends axially over a distance less than or equal to the axial distance from the thread of the end of the component. It is indeed desirable to be able to set up and quickly screw the sleeve. The number of turns of the thread 24 of the sleeve 2 is therefore generally reduced so that it can be put in place in only a few, in particular 3 or 4, tightening turns. The sleeve extends downstream of the thread 24 over a distance greater than the length, taken in a longitudinal direction of the tubular component, from the thread of said component, to a downstream end portion 25.
    [0032] The downstream end portion 25 carries the sealing device 4. The sealing device 4 is intended to come into contact with an external surface of the body of the tubular component to be protected, in a part situated downstream of the thread of the end said component.
    [0033] The sealing device 4 is thus located at a distance from the thread 24 which is greater than the length of the thread of the end of the component to be protected. Thus, when the protector 1 is put in place, when the threading 24 begins to engage with the threading of the end of the component, the sealing device 4 is located downstream beyond said thread of the thread. end of the component. The sealing device 4 is made of an elastomeric material capable of forming a seal and sealing with the tubular component. More specifically, the sealing device 4 is made of a flexible material, that is to say deformable, and elastic, that is to say, can substantially recover its original shape. Said material may have an elongation at break greater than 300%. To do this, it can for example be performed by injection into a flexible material resistant to corrosion, chemical attack, including industrial solvents and acids, and prolonged exposure to UV radiation, with preservation of mechanical properties. Among the various families of materials that can be advantageously used, there may be mentioned neoprene elastomers such as Baypren 210 manufactured by LANXESS, EPDM such as Nordel IP Hydrocarbon Rubber manufactured by DOW, nitriles, or one of these materials arranged in a polyolefin matrix. The sealing device 4 may be constituted by said material. The sealing device 4 is integral with the sleeve 2. More specifically, the sealing device 4 is made by molding on the downstream end portion 25 of the sleeve 2 (overmoulding).
    [0034] Overmolding is performed by injection. When the sleeve 2 is also made by injection, it is advantageous to make the protector according to a two-component injection method.
    [0035] In a complementary manner, the sealing device 4 is shaped so as to have a substantially trapezoidal section with a beveled inner surface, the thickest section being oriented upstream of the protector. The implementation of a beveled surface allows a better adaptation of the sealing device 10 to surface irregularities of the body of the tubular component. More particularly, the bevelled surface forms an angle of 5 to 45 ° with respect to a longitudinal axis of the protector. FIG. 2 is a partial diagrammatic representation in longitudinal section of a downstream end of a protector 10 according to a second embodiment. The protector 10 differs from the protector 1 essentially by the shape of the sealing device 41. The sealing device 41 has a downstream portion 42 intended to come into contact with the surface of the component to be protected having a rounded shape and forming a substantially peripheral bead. Furthermore, in a complementary manner, the sealing device 41 extends upstream of the protector 10, along an outer surface of the sleeve 2 over a relatively large distance. The sealing device 41 thus constitutes an outer coating which provides additional protection against impacts. Preferably, the contact surface of the sealing device with the sleeve is greater than 10% of the total length of the sleeve, preferably greater than 20%.
    [0036] FIG. 3 is a representation of an alternative embodiment of the protector 10 of FIG. 2 equipped with a sealing device 43. The sealing device 43 differs from the sealing device 41 in that it comprises a protection flap 44 of the downstream part 42 intended to come into contact with the surface of the component to be protected. The flap 44 makes it possible to limit the exposure of the downstream part 42 to the sunlight, and in particular to the ultra-violet ones. FIG. 4 is a representation of another alternative embodiment of the protector 10 of FIG. 2 equipped with a sealing device 45. The sealing device 45 differs from the sealing devices 41 and 42 in that it comprises a double flap 46 for protecting the downstream part 42 intended to come into contact with the surface of the component to be protected. Figures 5 and 6 are partial diagrammatic representations in longitudinal section of a downstream end of a protector 100 according to a third embodiment. The protector 100 differs from the protector 10 essentially in that it comprises a sealing device 401 which comprises a portion 402 intended to come into contact with the surface of the tubular component which is elastically flexible. More specifically, the portion 402 is resiliently flexible in at least one longitudinal axial direction of the protector. The restricted section connecting portion connecting the portion 402 to the sealing device 401 makes it possible to maintain a seal even in the event of significant dimensional variation of the surface of the component or the protector due to manufacturing variations or thermal variations. The flexibility of the portion 402 allows adaptation of the seal to irregularities in the surface of the tubular component to be protected.
    [0037] In addition, like the protector 10, the sealing device 401 of the protector 100 is equipped with a flap 404 intended to limit the exposure of the portion 402 to ultraviolet light.
    [0038] Figure 4 illustrates the joint flying over the thread of the component before the threads mesh. A protector 200, as shown in FIGS. 7a and 7b, comprises a sleeve 202 and a sealing device 204 cooperating together and intended to be placed on the female (threaded) end of a component. The sealing device 204 comprises a body 241 and a lip 242. The characteristics common with the preceding modes, in particular of materials, are not described again. The female end comprises an internal thread 50 extended by a substantially radial end surface 51. A sealing surface 52 is machined on the side of the internal thread 50 opposite the end surface 51. Between the sealing surface 52 and the bore the body of the component is provided with a stop surface 53 of predominant radial orientation. The sleeve 202 is responsible for protecting at least a portion of the internal thread of the female end and, optionally, at least one sealing surface also forming part of the female end. To do this, the sleeve 202 is intended to be attached to the female end and is shaped to the female end. In half axial sectional view, the sleeve 202 has a generally T-shaped section.
    [0039] The sleeve 202 comprises an upstream end portion 221 intended to be placed at a distance from the female end. The upstream end portion 221 is thick and adapted for the absorption of shocks and knocks. The upstream end portion 221 is intended to cover the transverse annular surface at the end of the free end portion of the female end, generally an abutment surface. The upstream end portion 221 may provide an annular local continuous seal with the free end portion of the female end. The upstream end portion 221 is of generally annular shape. The upstream end portion 221 includes an outer surface 221a and a bore 221b.
    [0040] From the outer surface 221a is formed a notch 227. The notch 227 is oriented radially inwardly. The notch 227 has a depth less than the radial thickness of the upstream end portion 221. The notch 227 is disposed in the vicinity of the free end portion of the female end in the screwed state, cf. FIG. 7b. The notch 227 delimits an elastically deformable portion 226 in the axial direction of the upstream end portion 221. The elastically deformable portion 226 is located facing the free end surface 51 of the female end being screwed, cf. FIG. 7a. and in contact with the end surface 51 of the female end in the screwed state, cf. FIG. 7b. At the end of screwing, the notch 227 closes at least partially forming a visual indicator of end of screwing. The sleeve 202 includes a downstream end portion 225. The upstream end portion 221 and the downstream end portion 225 form the top bar of T. The downstream end portion 225 supports the seal body 241. The downstream end portion 225 has a bore a small diameter adjacent the upstream end portion 221 and a bore large diameter remote from the upstream end portion 221. The downstream end portion 225 has a large diameter outer surface adjacent the upstream end portion 221 and a small diameter outer surface remote from the upstream end portion 221 Here, the seal body 241 is overmolded on the large diameter bore. The sealing body 241 is overmolded on a radial end surface of the downstream end portion 225. The sealing body 241 is also overmolded on the outer surface of small diameter. Thus, the seal body 241 is firmly attached to the downstream end portion 225 by at least two coaxial surfaces. The lip 242 projects radially outward and axially opposite the upstream end portion 221. The lip 242 is configured to seal with a bore of the female end of the component in the position of the Figure 7b, the downstream end portion 225 projecting into said female end. The sleeve 202 comprises a frustoconical outer surface 202a between the downstream end portion 225 and the upstream end portion 221. The frustoconical outer surface 202a has a diameter increasing from the downstream end portion 225 to the upstream end portion 221. The frustoconical outer surface 202a is configured to pass freely into the female thread of the female end of the component. The outside diameter of the frustoconical outer surface 202a is smaller than the inside diameter of the female thread. Between the frustoconical outer surface 202a and the elastically deformable portion 226, the sleeve 202 comprises an external thread 224. The external thread 224 is configured to engage the female thread of the female end of the component in the state illustrated in FIG. Figure 7b. As illustrated in FIG. 7a, the external thread 224 comes into contact with said female thread substantially at the same time as the lip 242 comes into contact with the bore of the female end. Here, the lip 242 comes into contact with the bore of a running portion of the female end, i.e., a bore located downstream of the machined regions. The sleeve 202 comprises a radially inwardly projecting flange-shaped or shutter-forming disc 22. In one embodiment, the collar 22 extends in a radial partition 23 closing the sleeve on the opposite side to the sealing device 4. The radial partition 23 forms a plug. The radial partition 23 is located axially in the region of the frustoconical outer surface 202a. The flange 22 allows a radial offset between the bore of the upstream end portion 221 and the small diameter bore of the downstream end portion 225. The small diameter bore of the downstream end portion 225 has a smaller diameter than the diameter. of the bore of the upstream end portion 221. The radial partition 23 may be provided with a small diameter through bore allowing a pressure equalization, especially during barometric and altimetric variations. The thread 224 extends axially a distance less than or equal to the axial length of the thread of the end of the component. When fitting the protector 1, when the thread 224 begins to engage with the thread of the end of the component, the sealing device 4 is located downstream 30 beyond said female end threading. component.
    [0041] The invention is not limited to the examples described above, only by way of example, but encompasses all the variants that can be considered by those skilled in the art within the scope of the claims below.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Protector (1) temporary one end of a tubular joint component for drilling or exploitation of hydrocarbon wells, said end having at least one thread and at least one free end portion, and said component comprising a body downstream of the threaded end, said protector (1) comprising: - a sleeve (2), intended to be attached to the end of the component and shaped to protect said free end portion and the thread of said end of the component, said sleeve (2) having a thread (24) adapted to engage the thread of the end of the component and extending axially a distance less than or equal to the axial distance of the thread of the end of the component, - a sealing device (4) sealingly mounted on the sleeve (2) and adapted to be placed in contact with a surface of said component located downstream of the thread of the end of the component, of mani to ensure a seal downstream of said thread, characterized in that the sealing device (4) and the sleeve (2) are arranged in such a way that during the introduction of the protector on the tubular component, at the moment when the thread (24) of the sleeve (2) engages with the thread of the end of the tubular joint component, at least a part of the sealing device (4) intended to come into contact with the surface of said component, located axially downstream of the thread of the end of said component.
    [0002]
    2. Protector according to claim 1, characterized in that the sleeve (2) has a length downstream of the thread adapted to engage with the thread of the end of the tubular component which is greater than the thread length of the tubular component. , the part of the sealing device (4) intended to come into contact with the surface of the component being located substantially at a downstream end of said sleeve.
    [0003]
    3. Protector according to any one of claims 1 or 2, characterized in that the ratio of the axial distance of the thread of the tubular component to the axial distance of the thread (24) of the sleeve (2) of the protector is greater than or equal to 2, preferably greater than or equal to 3.
    [0004]
    4. Protector according to any one of claims 1 to 3, characterized in that the sealing device is integral with the sleeve.
    [0005]
    5. Protector according to claim 4, characterized in that the sealing device is secured to the sleeve by overmolding.
    [0006]
    6. Protector according to claim 5, characterized in that the sealing device is secured to the sleeve by overmolding implemented by two-component injection.
    [0007]
    7. Protector according to any one of claims 1 to 6, characterized in that it comprises a secondary sealing device adapted to be placed in contact, on the one hand, with a surface of said component, at least in the end portion free of the end of the component, and secondly, said sleeve so as to provide a seal upstream of said thread.
    [0008]
    8. Protector according to any one of claims 1 to 7, characterized in that the contact surface of the sealing device with the sleeve is greater than 10% of the total length of the sleeve, preferably greater than 20%.
    [0009]
    9. Protector according to any one of claims 1 to 8, characterized in that the sealing device comprises at least one flap (44) extending at least above the portion of the sealing device intended to come to the touching the surface of the component so as to at least partially protect it from light.
    [0010]
    10. Protector according to any one of claims 1 to 9, characterized in that the portion of the sealing device intended to come into contact with the surface of the tubular component is elastically flexible in at least one longitudinal axial direction of the protector.
    [0011]
    11. Protector according to any one of claims 1 to 10, characterized in that the portion of the sealing device intended to come into contact with the surface of the tubular component has a beveled contact surface and a longitudinal section which increases by downstream upstream.
    [0012]
    12. Protector according to any one of claims 1 to 11, characterized in that it is designed for a male end having an external thread.
    [0013]
    13. Protector according to any one of claims 1 to 12, characterized in that it is designed for a female end having an internal thread.
    [0014]
    14. Kit of a protector according to any one of claims 1 to 13, characterized in that it comprises at least one sleeve and at least one associated sealing device.
    [0015]
    A tubular threaded joint component for drilling or operating hydrocarbon wells, comprising an end provided with at least one thread and having a free end portion, said component being provided with a protector according to any one of Claims 1 to 13 screwed onto said thread of said tubular component.
    类似技术:
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    EP2099692B1|2013-04-24|Device for protecting a male end of a tubular threaded joint component.
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    CH660066A5|1987-03-13|ANNULAR SEALING OF CAST IRON PIPES.
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    FR3099945A1|2021-02-19|Pipe, tubular joint and corresponding manufacturing process
    FR2904031A1|2008-01-25|VAM EIS type male element for e.g. drill pipe, has extremity part with part whose diameter is decreased by moving towards another part, where former part forms bevel and is connected to latter part on side opposed to internal thrust
    OA17482A|2016-12-30|Method of mounting a flexible pipe end piece and associated pre-assembly.
    同族专利:
    公开号 | 公开日
    US10788156B2|2020-09-29|
    AR104476A1|2017-07-26|
    US20180274711A1|2018-09-27|
    FR3030676A1|2016-06-24|
    EP3237789B1|2020-07-15|
    EP3237789A1|2017-11-01|
    WO2016102848A1|2016-06-30|
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    法律状态:
    2016-06-24| PLSC| Search report ready|Effective date: 20160624 |
    2016-10-28| ST| Notification of lapse|Effective date: 20160930 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1463274A|FR3030676A1|2014-12-23|2014-12-23|DEVICE FOR PROTECTING AN END OF A FLEXIBLE TUBULAR THREADED JOINT COMPONENT|US15/537,727| US10788156B2|2014-12-23|2015-12-18|Protector for threaded end of a tubular component with flexible seal|
    EP15823359.3A| EP3237789B1|2014-12-23|2015-12-18|Tubular threaded-joint component with protector device|
    PCT/FR2015/053634| WO2016102848A1|2014-12-23|2015-12-18|Protector device for one end of a tubular threaded-joint component comprising a flexible joint|
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