• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device (1) for lining or sealing a well or pipe, said device comprising a radially expandable tubular liner (11) and at least one annular seal (12) carried by said liner (11). According to the invention said seal (12) comprises at least a first portion (121, 224) formed by a filament or braid spirally mounted around the outer surface of said jacket (11).
    公开号:FR3022577A1
    申请号:FR1455571
    申请日:2014-06-18
    公开日:2015-12-25
    发明作者:Benjamin Saltel；Francois Bajart
    申请人:Saltel Industries SAS；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The invention relates to the field of drilling, and in particular oil and geothermal drilling. The invention relates to a device comprising a radially deformable liner and which is intended to seal or seal a well or pipe. 2. Solutions of the Prior Art In the remainder of the description, the invention will be described, by way of example, in the field of oil production. In oil wells, it is known to use a sleeve or cylindrical expandable metal tube, called "patch" for sealing the casing, and thus the well.
    [0002] Recall that the casing, or casing, is a metal tube, commonly referred to by the English term "casing", which garnishes the interior of the oil well, on a length usually between 300 and 4500 meters, for an inside diameter included generally between 100 and 320 millimeters. This casing is made from segments connected throughout the height of the well through joints (called "collars"). Such a sealing sleeve has a diameter slightly less than the diameter of the casing, and is fixed against the inner face of the casing, at the area to be sealed, by radial expansion. This expansion operation is carried out, in a known manner, by using conically-shaped expansion tools, by hydroforming a fluid under pressure, or by an expansion balloon called "inflatable packer". Some of these sleeves have a sealing coating which is in the form of an annular layer of flexible and elastic material, rubber or elastomer for example. This outer covering makes it possible to guarantee a satisfactory seal between the body of the sleeve and the inside of the casing. In practice, high temperature elastomers preserve their properties up to about 325 ° C.
    [0003] Therefore, these elastomeric sleeves are unsuitable for sealing wells in which temperatures are above 325 ° C. This is particularly the case of wells in which the extraction of oil is carried out by steam injection. Such a technique, called "cyclic steam stimulation" or "CSS" in English, is used in deposits containing heavy / viscous oils, the injection of steam into the well being intended to heat and reduce the viscosity of the oil (from way to thin it). After a waiting period, the liquefied petroleum is then pumped to the surface (production phase). This operating cycle is repeated several times, ten times for example, at high temperatures, between 20 ° C and 325 ° C or higher, and high pressures, between 210 and 140 bar respectively. High temperatures sometimes cause the casing (collar) to break between two elements of the casing, which requires that these portions of the casing wall be sealed.
    [0004] Alternative solutions to the elastomeric sleeve have been proposed for high temperatures. Sleeves carrying a metal sealing element have thus been proposed. Although this type of sleeve withstands high temperatures and pressures, it nevertheless has drawbacks, in particular difficult positioning and a large wall thickness (which reduces the section of the well by the same amount). The sealing of such a sleeve is also not optimal, in particular for a gas seal.
    [0005] 3022577 3 Sleeves bearing a graphite / carbon seal have also been proposed. These materials are resistant to temperature and corrosion. However, their elongation rate is low (generally less than 8%), which reduces the expansion rate of the sleeve, and therefore the sealing qualities of the sleeve (but also the possibilities of installing the sleeve). Thus, the current solutions of sleeves adapted to high temperatures and pressures pose problems both in terms of space (for the metal sealing solution) and in terms of elongation rate (for the sealing solution). graphite / carbon) and sealing (for metal, graphite / carbon and elastomer solutions). 3. OBJECTIVES OF THE INVENTION The object of the invention is therefore especially to overcome all or part of the disadvantages of the prior art.
    [0006] More specifically, the purpose of the invention is, in at least one embodiment, to provide a radially deformable device for sealing or sealing a well or pipe: - which is simple to enforce ; which can withstand high temperatures and pressures, and guarantees good sealing at these temperatures and pressures; which maintains its sealing qualities over a wide range of temperatures and pressures; which has a good behavior over time; which is compact and does not cause too much reduction of the well section. Another object of the invention, in at least one embodiment, is to provide a device that is easily deformable and has a high elongation ratio, at least greater than 10%.
    [0007] Yet another object of the invention, in at least one embodiment, is to provide a device that is particularly adapted to the ambient conditions of a CSS sink (temperatures between 20 ° C and at least 325 ° C, and pressures between 210 and 140 bar respectively), and can withstand several temperature cycles (corresponding to the operating cycles of such a CSS sink). 4. SUMMARY OF THE INVENTION The invention manages to fill all or part of these objectives by means of a device for lining or sealing a well or pipe, said device comprising a radially expandable tubular liner and less an annular seal carried by said jacket. According to the invention, said seal comprises at least a first portion formed by a filament or braid spirally mounted around the outer surface of said jacket.
    [0008] The invention thus proposes to dispose a spiral filament or braid on an expandable sleeve or sleeve to form a seal. This filament or braid is wrapped around the liner along the longitudinal axis of the liner, on a single level (radially to the longitudinal axis of the liner) around the liner.
    [0009] This allows a good fixation of the sealing material during the expansion and during the descent of the device in a well to the desired depth (this descent phase is called "Run In Hole" or "RIH"). By the term "well" will be understood conventionally, in the present description and the claims to follow, a well providing water or hydrocarbons (oil or gas in particular), whether drilled and with a gross wall, or it is jacketed by a casing, and a pipe for the transport of a fluid.
    [0010] By the term "filament" is meant conventionally, in the present description and the claims to follow, an element (or wire) of fine and elongated shape. It can be compacted material or compacted strands or sheets of twisted materials.
    [0011] By the term "braid" will be understood conventionally, in the present description and the claims to follow, two or more filaments which are interlaced. According to a particular feature, said seal comprises a second portion formed by a filament or braid, said second portion being spirally mounted around the outer surface of said liner and juxtaposed to the first portion along the longitudinal axis of the liner. shirt. According to a particular characteristic, the first part is connected to the second part by connecting means. According to a particular characteristic, said connecting means comprise a connecting element disposed around the jacket and formed of aramid fibers encapsulated in a rubber envelope. According to a particular characteristic, said connecting means comprise a connecting ring disposed around the liner between the first part and the second part, and covering an end portion of each of the first and second parts. According to a particular feature, said seal comprises a second portion formed by a hollow cylindrical element mounted around the outer surface of said liner and juxtaposed to the first portion along the longitudinal axis of the liner.
    [0012] According to a particular characteristic, the second part (formed by a filament, a braid or a cylindrical element) has a coefficient of thermal expansion at least ten times greater than the first part (formed by a filament or a braid).
    [0013] According to a particular characteristic, the first part comprises a filament or a graphite braid. According to a particular characteristic, the second part (formed by a filament, a braid or a cylindrical element) is made of polymer.
    [0014] The second part may be made of PTFE only, for example. According to a particular characteristic, the second part is impregnated with graphite. Thus, the second part may be made of PTFE impregnated with graphite. According to one particular feature, the first part and / or the second part comprises / comprise a reinforcement made of carbon, glass fibers, aramid, stainless steel, inconel (registered trademark) or a nickel and chromium alloy. The first part of the seal may be formed by a braid composed of graphite son intertwined with son of another material.
    [0015] The seal may thus be formed of a first carbon / graphite braid connected by connecting means to a second braid of graphite impregnated polymer. By using suitable materials and a combination of filaments or braids wound juxtaposed to the expandable portion of the sleeve, such a device is highly resistant to heat and high pressures, and retains optimum sealing properties. at high temperatures and pressures. The sealing means of the device of the invention do not use elastomer (the seal does not rely on an elastomeric means, the effectiveness of which over time and under severe conditions is uncertain). which allows better mechanical and chemical resistance over time (less aging problems). Unlike annular sleeves or gates having an elastomeric seal, thermal cycling does not or hardly affect the device of the invention, the latter being able to withstand temperatures up to 600 ° C. Another advantage of such a device is that its wall is thin which allows a wide passage once it is placed in the well.
    [0016] According to a particular characteristic, one or more rubber threads may be integrated in at least one of the braids, preferably in the center, so as to increase the elasticity of the corresponding braid. According to a particular characteristic, said seal is covered on its periphery, at each of its two ends, by a ring for holding said gasket on the jacket. According to a particular characteristic, at least one of said holding rings is mounted so as to exert compression along the longitudinal axis of the sleeve on said seal. Thus, said seal is pre-compressed axially through the rings disposed at each of its ends. This axial pre-compression allows optimized radial expansion of the seal when the jacket is expanded. According to a particular characteristic, each of said holding rings is fixed on said jacket.
    [0017] Each of said rings is secured to said sleeve by welding, or by any other method of attachment. Such an approach allows to expand by more than 20% the sealing means which are mounted on the expansible sleeve of the device. The rings are fixed on the liner once the pre-compression of the seal is implemented. According to a particular feature, said liner carries a plurality of seals spaced along the longitudinal axis of the liner. These seals may be spaced at regular intervals or not.
    [0018] According to a particular feature, the liner is mounted on and surrounds a tubular portion for forming a portion of a well / borehole conduit. The invention can be applied to sealing sleeves (or patches), whose initial diameter is smaller than that of the well or pipe, and which is deformable by radial expansion beyond its elastic limit so that the sealing braid can be firmly and intimately applied against the wall of the well or pipe, thus sealing the wellbore. According to one particular feature, the liner forms part of a tubular sleeve for placement in a well / borehole conduit. The invention can also be applied to annular barriers. Such a barrier may comprise a tube on which is fixed an expandable sleeve carrying one or more juxtaposed braids wound in a spiral. The liner is intended to be expanded in an annular space to provide a barrier on either side of this annular space between a casing and a borehole (i.e. a "raw" drilled hole) or between two concentric casings of a wellbore. The invention furthermore relates to a method of manufacturing such a device for sealing or sealing a well or pipe, and comprising a radially expandable liner, said method comprising the steps following: spiral winding of at least one seal around the outer surface of said jacket; Placing at each end of the seal a retaining ring, each ring covering on its periphery an end of said seal; applying to one or each of said rings a compressive force oriented along the longitudinal axis of said liner towards said seal; Fastening each of said retaining rings to said liner; release of the compressive force once the fastening rings.
    [0019] According to a particular characteristic, the method further comprises the following steps: setting up means limiting the radial deformation or swelling of said seal before the application of a compressive force; - Removal of said means limiting deformation or swelling 10 once the compression force released. These means may take the form of a jacket or a winding (film) stretched of a non-elastic material disposed around the seal. Such an approach makes it possible to obtain an expansion rate of more than 20% of the seal when the jacket is expanded and therefore a better seal of the device of the invention. Indeed, the lateral compression (along the longitudinal axis of said liner) of the winding forming the seal while limiting its radial deformation makes it possible to compress the seal in the axial direction 20 of the winding. 5. List of Figures Other features and advantages of the described technique will become more apparent upon reading the following description of two preferred embodiments, given by way of a simple illustrative and nonlimiting example, and the accompanying drawings, among others: which: Figure 1A is a perspective view of the liner device of the invention carrying a seal according to a first embodiment; Figure 1B is a detail view of the device of Figure 1A; Figure 2A illustrates a mounting variant of the seal according to the first embodiment; Figure 2B is a detail view, in section, of the device of Figure 2A; Figures 3A to 3C schematically illustrate the thermal expansion of the braids forming the seal according to the first embodiment; - Figure 4 is a perspective view of the device of the invention provided with a plurality of spaced seals; FIGS. 5A to 5F are different views of the device of the invention carrying a seal according to a second embodiment; FIGS. 6A and 6B are perspective and sectional views of the sealing device of the invention carrying a seal according to the first embodiment; FIG. 7A is a perspective view of an alternative of the liner device described in connection with FIGS. 1A and 1B; Figure 7B is a longitudinal sectional view of the sleeve of Figure 7A, with Figures 7C and 7D being detail views of Figure 7B. 6. Description Next two embodiments of the sealing means of the device of the invention are presented. It should be noted that these two embodiments are not limited to a device intended to be expanded in the casing of a wellbore so as to seal or jack the latter (the device serves in this case as a "patch" of 'sealing). The sealing means can also be implemented in the case where the device of the invention serves as an annular barrier intended to be expanded in an annular space to provide a barrier on either side of this annular space between a casing and a borehole (that is, a "rough" drilled hole) or between two concentric casings of a wellbore. 6.1 First Embodiment With reference to FIGS. 1A and 1B, a first embodiment in which the device, or patch, 1 comprises a radially expandable liner or sleeve 11 which is a cylindrical tube of metal, in particular of steel , on which is mounted a seal 12. The metal must be both resistant (mechanically and corrosion) and sufficiently ductile to be properly expanded.
    [0020] The seal 12 is formed by a winding of two braids 121, 122 surrounding the jacket 11 and carried by the latter. The ends of the braids 121, 122 are clamped inside annular rings 125 which are fixed on the jacket 11. Alternatively, the seal 12 is formed by a winding of two filaments surrounding the jacket 11 and which are worn by the latter. Another alternative is described below in connection with FIGS. 7A to 7D. Conventionally, the jacket 11 is expanded by means of an expansion tool (cone, hydroforming or "inflatable packer") until the seal comes into contact with the wall of the well and ensures sealing (it clogs a leak for example and allows the repair of the well). The two sealing strands 121, 122 are mounted longitudinally (i.e. along the longitudinal axis A of the jacket 11) spirally around the outer surface of the metal jacket 11, as illustrated in FIG. 1A, each braided winding being in contact with the previous one. The radial winding of each braid 121, 122 is implemented on one level.
    [0021] 3022577 12 Note that the two braids 121, 122 are juxtaposed and in contact with each other (Figure 1B). The connection between the first braid 121 and the second braid 122 is provided in this example by a braid 123 of aramid fiber encapsulated in a rubber envelope. This link braid 123 provides continuity between the first braid 121 and the second braid 122. The connection between the first braid 121 and the second braid 122 can be provided by another type of fiber, or by a mechanical connecting element. FIG. 2A is a perspective view of the expandable sleeve carrying a double braid 121, 122 and a connecting ring 124 of the braids 121, 122. FIG. 2B is a detailed view showing the connecting ring 124 which covers one end each of the first and second braids 121, 122, the latter not being in contact with each other. In this example, the first braid 121 is composed of intertwined carbon filaments and graphite filaments (hereinafter referred to as carbon / graphite braid), the second braid 122 being formed of polytetrafluoroethylene filaments (the abbreviation of which is PTFE) impregnated with graphite (we will talk about PTFE / graphite braid later). It is noted that the first braid may be formed of graphite filaments intermixed with carbon, stainless steel, inconel (registered trademark) or PTFE filaments, and that the second braid may be formed of polymer filaments only, or polymeric filaments intermixed with filaments or impregnated with graphite, aramid, fiberglass or nickel-chromium alloy. It should be noted that other polymers than PTFE may be used in the seal 12. In other words, the seal 12 is a hybrid braid formed of two braids 121, 122 juxtaposed axially ( adjacent) and connected which form only one winding.
    [0022] The second PTFE / graphite braid 122 has optimum sealing properties because the PTFE softens at the patch 1 service temperature (i.e. at the temperature prevailing in the vicinity of patch 1 when the latter is placed in a well).
    [0023] In order to avoid any risk of creep of this second braid 122, that is to say its irreversible deformation, it is therefore associated with the first carbon / graphite braid 121 which is more stable in temperature and which guarantees the stability of the assembly (that is to say, the seal 12). This first carbon / graphite braid 121 thus fulfills an anti-extrusion function in order to eliminate, or at least limit, the creep of the second PTFE / graphite braid 122. Unlike PTFE, carbon / graphite has a low coefficient of thermal expansion and hardly swells at high temperatures (the first braid 121 therefore does not help to seal at high temperatures, this function being fulfilled by the second braid 122 in PTFE / graphite). In other words, for use of the patch 1 at a high temperature (above 330 ° C.), it is necessary to associate the PTFE / graphite braid 122 (ensuring the seal) with a stable material (under in the form of an adjacent carbon / graphite braid 121) to ensure the temperature stability of the seal 12. It is noted that PTFE has a high coefficient of thermal expansion with respect to carbon / graphite. Consequently, when the use temperature of the patch 1 decreases, the contraction of the second braid 122 is greater than the first braid 121, the latter then having sealing properties superior to the second braid 122. This effect of Thermal expansion of the braids 121, 122 is schematically illustrated in FIGS. 3A to 3C.
    [0024] FIG. 3A shows the braids 121, 122 when they are sealingly applied against the internal face or wall F of the casing C, at the level of the zone to be sealed, when the jacket 11 is expanded. As shown in FIG. 3B, the braids 121, 122 expand as the temperature increases and further press against the wall F, the second braid 122 further compressing the first braid 121 along the longitudinal axis of the sleeve 11 against the ring 125. When the temperature drops (FIG. 3C), the contraction of the second braid 122 is greater than the first braid 121, the first braid 121 then having sealing properties superior to the second braid 122. The packing sealing 12 thus combines the advantage of offering improved sealing (thereby decreasing the leakage rate) to that of being stable in thermal cycling (biT ° C important repeated several times). FIG. 4 is a perspective view showing a patch 1 which carries a plurality of seals 12A to 12D, the latter being able to be arranged at regular intervals (or not) longitudinally (along the axis A). Each seal 12A, 12B, 12C, 12D is formed, for example, of a first carbon / graphite braid and a second PTFE / graphite braid, each of which braids can withstand temperatures and pressures. high. It is noted that the first braid 121 of carbon / graphite filaments can withstand high temperatures (up to 550 ° C or 1000 ° F), the second PTFE / graphite braid 122 being able to withstand temperatures above 300 ° C . Such braids can withstand pressures greater than 210 bar.
    [0025] In other words, the sealing means of the patch 1 can withstand high temperatures and pressures by the use of suitable materials. These materials have, moreover, a good mechanical strength over time and are little or not sensitive to temperature cycling (thermal cycling), which makes them particularly suitable for sealing wells in which the injection of steam (CSS method for example) is used for oil extraction. 6.2 Second Embodiment 5 With reference to FIGS. 5A to 5F, a second embodiment of the sealing means of the device of the invention in which the device, or patch, 2 comprises a radially expandable sleeve 21 which is a tube cylindrical metal, in particular steel, on which is mounted a seal 22.
    [0026] The seal 22 is formed by a braid 224 surrounding and carried by the sleeve 21 (FIG. 5D). In an alternative, the seal 22 is a filament. The sealing strap 224 is longitudinally spirally mounted around the outer surface of the metal jacket 21, the radial winding 15 of the braid 224 being operated on a single level as shown in FIGS. 5E and 5F. In this second embodiment, the braid 224 is mounted on the liner 21 of the patch 2 so as to obtain an elongation rate of the braid 224, and therefore of the seal 22 of the patch 2, which is much greater than the rate of elongation, between 2% and 10%, gaskets (graphite / carbon in particular) patches of the prior art. FIGS. 5A to 5F schematically illustrate the particular method of laying / mounting the braid 224 on the metallic jacket 21 of the patch 2 which makes it possible to optimize the elongation rate of the braid 224, and allows a better seal. In this example, the braid 224 is made of reinforced graphite. Once the braid 224 is spirally wound on the outer surface of the metal jacket 21 of the patch 2, as shown in FIG. 5A, rings 225 are then threaded onto the jacket 21 and attached to each end of the braid 224 to form the braid 224. encapsulate the end portions of the latter, as shown in Figure 5B. Figure 5E is a sectional view showing the rings 225 mounted on the sleeve 21 and partially covering the braid 224 in its end portions. As illustrated by the arrows in FIG. 5C, an axial compression force (along the longitudinal axis A of the liner 21) towards the braid 224 is applied to the two rings 225 so as to compress the braid 224 axially. It will be noted that this axial compression slightly increases the diameter of the sealing gasket 22 formed by the braid 224. In an alternative, the axial compression force is applied solely to one of the two rings 225. The rings 225 are then welded. on the sleeve 21 and the axial compression force is released. The braid 224 is thus held on the liner 21 through the rings 225 which are attached to the liner 21 (Fig. 5F). Laterally compressing (along the longitudinal axis of the liner 21) the spirally wound braid 224 causes compression tangentially (in the direction of the fiber). When the liner 21, and therefore the patch 2, are expanded, the braid 224 is biased in tangential traction, in the opposite direction. This method of installation allows a rate of elongation of the braid 224 beyond 10%, up to about 26%, which increases the expansion rate of the patch 2 and the possibilities of laying it. As for the first illustrated embodiment, this second embodiment also makes it possible, in a simple manner, to provide a compact patch, guaranteeing a good seal at high temperatures and pressures (for example 400 ° C.) and presenting good mechanical strength over time.
    [0027] In a particular embodiment (not shown), the patch liner carries a plurality of braid windings spaced apart and each mounted according to the method just described. The braid 224 may be a reinforced graphite braid stainless steel or Inconel 5 (registered trademark), the braid being in this case made of graphite son interwoven with stainless steel or Inconel son. In variants, the braid may be a graphite / carbon braid or a graphite / PTFE braid (the PTFE filaments being impregnated with graphite). 6.3 Other Aspects / Variants It should be noted that the first embodiment and the second embodiment may be implemented independently of one another or in combination. Thus, the seal 22 of the second embodiment may be formed by a braid in two parts juxtaposed and connected by connecting means according to the first embodiment. In each of the embodiments described above, the liner seal may consist of a plurality of braid wraps (called blocks or "packing") which are mounted on the outer surface of the patch liner at regular intervals (or no).
    [0028] By way of example, the liner may carry a series of three 30 cm wide windings spaced a predetermined distance apart, or about thirty 2 cm wide windings spaced a predetermined distance apart. Each winding comprises a single braid or two braids connected by connecting means, which are or not pre-compressed by compression rings at their ends. The braids used are of square section, preferably. They may each comprise one or more rubber strands which make it possible to increase the elasticity of the corresponding braid.
    [0029] Each portion of the packer may be composed of a filament rather than a braid. The device of the invention can be implemented in oil wells or geothermal wells. These wells can be vertical, or inclined.
    [0030] The device of the invention, whose lifetime is at least 15 to 20 years, is particularly, but not exclusively, adapted to CSS sinks. Figure 7A is a perspective view of an alternative of the liner device described in connection with Figures 1A and 1. The device, or patch, 1 comprises an expandable sleeve 11. The sleeve 11 carries a single braid 121 forming the first portion of the seal 12 (it could be a filament in one variant) and an expansion block 126 forming the second portion of the seal Figure 7B is a longitudinal sectional view of the sleeve of Figure 7A, with Figures 7C and 7D being detail views of Figure 7B.
    [0031] The expansion block 126 covers an end portion of the braid 121 (Fig. 7C), and is retained at the other end by a ring 125 (Fig. 7D) which is permanently attached to the sleeve 11 (by welding or by any other technique). The expansion block 126, which is a hollow PTFE cylindrical block in this example (of an inside diameter slightly larger than the outside diameter of the sleeve 11), has a high coefficient of thermal expansion and expands to compress (depending on the longitudinal axis of the sleeve 11) the braided winding 121 juxtaposed graphite during the rise in temperature (in accordance with the principle detailed in connection with Figures 3A to 3C). 6.4 Annular barrier The sealing means described in relation to the first and second embodiments (when implemented in a patch) may be implemented in an isolation device / shutter, or annular barrier.
    [0032] Such an isolation device 3 is shown in FIGS. 6A and 6B in perspective and in section respectively. Such an isolation device is, in known manner, intended to expand in an annular space and to form a barrier on either side of this annular space between a casing (or tubular structure) and an inner wall of a borehole, or between a first casing and a second casing that surrounds the first. In the illustrated example, the isolation device 3 is mounted on a tubular portion 4 (partially shown) which forms a portion of a casing of a well. The isolation device 3 is shown unexpanded in FIGS. 6A and 6B. When expanded, the isolation device 3 isolates, for example, an annular portion of the well where there is a high pressure of another annular portion downstream / upstream, where low pressure prevails. The tubular portion 4 is thus provided along its outer face with a tubular metal jacket 31 carrying the braid or braids and whose ends are secured to the outer face of the tubular portion 4. More specifically, the ends of the sleeve 31 are enclosed within annular rings 325. In the example illustrated in FIGS. 6A and 6B, the jacket 31 is provided on its outer face with a seal 32 formed of two braids 321, 322 juxtaposed according to the longitudinal axis A 'of the liner 31 (according to the first embodiment) and connected by a connecting ring 324, the braids 321, 322 being able to seal the liner 31 when the latter is deformed and pressed against the wall of a well or casing (not shown). In an alternative, the liner 31 is provided on its outer face with a pre-compressed braid (in accordance with the second embodiment previously described) capable of sealing the liner when the liner is deformed and pressed against the wall of a well or casing. The liner 31 is deformed when a fluid (not shown) is injected into the internal space of the tubular portion 4 under a predetermined pressure, the fluid passing through an opening (not shown) which communicates the interior of the portion tubular 4 with the expandable space E delimited by the wall of the tubular portion 4 of the casing, the sleeve 31 and its ends retained by the rings 325. 10
    权利要求:
    Claims (18)
    [0001]
    REVENDICATIONS1. Apparatus (1) for lining or sealing a well or pipe, said device comprising a radially expandable tubular liner (11) and at least one annular seal (12) carried by said liner (11) characterized in that said seal (12) comprises at least a first portion (121, 224) formed by a filament or braid spirally mounted around the outer surface of said jacket (11).
    [0002]
    2. Device (1) according to claim 1, characterized in that said seal comprises a second portion (122) formed by a filament or a braid, said second portion (122) being spirally mounted around the outer surface said liner and juxtaposed to the first portion (121) along the longitudinal axis of the liner (11).
    [0003]
    3. Device (1) according to claim 2, characterized in that the first portion (121) is connected to the second portion (122) by connecting means.
    [0004]
    4. Device (1) according to claim 3, characterized in that said connecting means comprises a connecting element (123) disposed around the jacket and formed of aramid fibers encapsulated in a rubber casing.
    [0005]
    5. Device (1) according to claim 3, characterized in that said connecting means comprise a connecting ring (124) disposed around the jacket (11) between the first portion (121) and the second portion, (122) and covering an end portion of each of the first and second portions.
    [0006]
    6. Device (1) according to claim 1, characterized in that said seal (12) comprises a second portion (126) formed by a hollow cylindrical member 2222577 mounted around the outer surface of said sleeve and juxtaposed to the first part along the longitudinal axis of the shirt
    [0007]
    7. Device (1) according to one of claims 2 to 6, characterized in that the second portion (122, 126) has a coefficient of thermal expansion at least ten times greater than the first portion (121).
    [0008]
    8. Device (1) according to one of claims 1 to 7, characterized in that the first portion (121) comprises a graphite filament or braid.
    [0009]
    9. Device (1) according to one of claims 2 to 8, characterized in that the second part (122, 126) is made of polymer. 10
    [0010]
    10. Device (1) according to claim 9, characterized in that said polymer is PTFE.
    [0011]
    11. Device (1) according to claim 9 or 10, characterized in that the second part (122, 126) is impregnated with graphite.
    [0012]
    12. Device (1) according to one of claims 1 to 5 and 7 to 10, characterized in that the first part (121) and / or the second part (122, 126) comprises / comprise a carbon reinforcement, fiberglass, aramid, stainless steel, inconel (registered trademark) or alloy of nickel and chromium.
    [0013]
    13. Device (1) according to one of claims 1 to 12, characterized in that said seal (22) is covered on its periphery, at each of its two ends, by a retaining ring (225) of said seal (22) on the jacket (21).
    [0014]
    14. Device (1) according to claim 13, characterized in that at least one of said retaining rings (225) is mounted so as to exert compression along the longitudinal axis of the liner (21) on said gasket 25. sealing (22).
    [0015]
    15. Device (1) according to claim 14, characterized in that each of said retaining rings (225) is fixed on said sleeve (21). 3022577 23
    [0016]
    16. Device (1) according to one of claims 1 to 15, characterized in that said liner (11) carries a plurality of seals (12A, 12B, 12C, 12D) spaced along the longitudinal axis (A) of the shirt (11).
    [0017]
    17. Device (1) according to one of claims 1 to 16, characterized in that the liner (11) is mounted on and surrounds a tubular portion intended to form part of a pipe of a well / borehole. drilling.
    [0018]
    18. Device (1) according to one of claims 1 to 16, characterized in that the sleeve (11) forms part of a tubular sleeve intended to be placed in a pipe of a well / borehole. 10
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    FR3006414A1|2014-12-05|FLEXIBLE CONDUIT OF FLUID TRANSPORT, USE AND METHOD THEREOF
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    EP3022477A1|2016-05-25|Connection end piece of a flexible pipe, and associated flexible pipe
    WO2017009463A1|2017-01-19|Device for protecting a degradable rupture pin for an insulating system in an annular barrier
    FR3067090A1|2018-12-07|CONNECTION TIP FOR A FLEXIBLE CONDUIT AND ASSOCIATED MOUNTING METHOD
    FR3044737A1|2017-06-09|CONNECTION TIP FOR A FLEXIBLE CONDUIT AND ASSOCIATED MOUNTING METHOD
    同族专利:
    公开号 | 公开日
    EP3158164A1|2017-04-26|
    FR3022577B1|2016-07-29|
    US10428615B2|2019-10-01|
    CA2950985A1|2015-12-23|
    US20170138148A1|2017-05-18|
    JP2017519921A|2017-07-20|
    WO2015193404A1|2015-12-23|
    EA201790031A1|2017-06-30|
    CN106574491A|2017-04-19|
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    法律状态:
    2015-06-24| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-25| PLSC| Search report ready|Effective date: 20151225 |
    2016-06-27| PLFP| Fee payment|Year of fee payment: 3 |
    2017-06-23| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-26| PLFP| Fee payment|Year of fee payment: 5 |
    2020-06-29| PLFP| Fee payment|Year of fee payment: 7 |
    2021-06-24| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1455571A|FR3022577B1|2014-06-18|2014-06-18|DEVICE FOR SHAPING OR SHUTTING A WELL OR PIPE|FR1455571A| FR3022577B1|2014-06-18|2014-06-18|DEVICE FOR SHAPING OR SHUTTING A WELL OR PIPE|
    EP15728906.7A| EP3158164A1|2014-06-18|2015-06-17|Device for lining or closing off a well or a pipeline|
    EA201790031A| EA201790031A1|2014-06-18|2015-06-17|THE DEVICE OF THE SEAL OR OVERLAP OF THE WELLS OR PIPELINE|
    CA2950985A| CA2950985A1|2014-06-18|2015-06-17|Device for lining or closing off a well or a pipeline|
    US15/319,791| US10428615B2|2014-06-18|2015-06-17|Device for lining or obturating a wellbore or a pipe|
    PCT/EP2015/063654| WO2015193404A1|2014-06-18|2015-06-17|Device for lining or closing off a well or a pipeline|
    JP2016573562A| JP2017519921A|2014-06-18|2015-06-17|Equipment for lining or hole closure of wells or pipes|
    CN201580032728.5A| CN106574491A|2014-06-18|2015-06-17|Device for lining or closing off a well or a pipeline|
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