• 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:
    FRAGMENT CHAMBER WITH HELICOIDAL FLOW PATH FOR IMPROVED REMOVAL OF UNDERGROUND FRAGMENTS. The present invention relates to a collector of underground fragments that promotes a swirling effect in the chain loaded with fragments by placing grooves or spiral projections inside the inlet tube. In some embodiments, the solids come out of openings on the side of the inlet tube, and in others the solids can come out near the top, either directly to the closed volume of solids holding when the liquid comes out directly, or solids can be discharged at the end of the inlet tube into the larger open space defined by the housing. In the latter case, the inner wall of the housing may have a sieve or vanes that reduce the speed of the solid particles when the fluid continues to an outlet of the housing and, eventually, to an outlet sieve before being discharged, or to go to the surface or recycle back along the exterior of the tool to the inlet pipe while connecting additional fragments.
    公开号:BR112013005886B1
    申请号:R112013005886-2
    申请日:2011-08-24
    公开日:2020-06-23
    发明作者:Mohan L. Soni；Gerald D Lynde；Ronnie D. Russell；Jeremy J. Guillory；Steve Rosenblatt
    申请人:Baker Hughes Incorporated；
    IPC主号:
    专利说明:

    Field of invention
    The present invention relates to cleaning tools for underground fragments and, more particularly, the type of tools that direct fragments with the flow into the lower end of the tool and retain the fragments in a collection volume around a tube inlet and, more particularly, it also employs a swirling movement of the chain that carries fragments that it enters to improve separation in the tool. Background of the invention
    Crushing operations in underground locations involve fluid circulation, which is designed to remove cutouts for the surface. Some of these cutouts are not carried to the surface and deposit on a well-hole support such as a plug or bridge plug below. In open bore situations, the borehole may collapse, sending fragments into the borehole. Over time, sand and other debris can deposit on a borehole support, and need to be removed to access the support or to allow other underground operations.
    Well-hole cleaning tools were used to remove such fragments. Different styles have been developed over time. In a traditional style, the motor fluid goes through the center of the tool and to the bottom to fluidize the fragments and send the current that carries fragments around the outside of the tool where a diverter redirects the flow through the tool body. A receptacle collects the fragments when the clean fluid passes through a sieve and is discharged above the diverter to travel to the surface.
    Another type of tool has a jet stream going down the well outside the tool, to drive fragments into the bottom end of the tool, where fragments are collected, and clean fluid that passes through a sieve is returned to the surface outside of the tool through doors located next to the well-oriented jet outlets. The jet outlets act as an eductor to pull debris-laden flow into the lower end of the tool. Some examples of such tools are USP: 6,176,311; 6,607,031; 7,779,901; 7,610,957; 7,472,745; 6,276,452; 5,123,489. Fragment collectors with a circulation pattern that picks up fragments on the outside of the tool body and sends them into the tool with a diverter are illustrated in USP: 4,924,940; 6,189,617; 6,250,387 and 7,478,687.
    The use of centrifugal force to separate components of different densities is illustrated in a product sold by Cavins, of Houston, Texas, under the name Sandtrap Downhole Desander, for use with electric submersible pump suction lines. USP 7,635,430 illustrates the use of a hydrocyclone in a wellhead. Also relevant to the field of removing underground fragments is SPE 96.440; P. Conell and D. B. Houghton: Removal of Debris from Deep Water Wellbore Using Vectored Annulus Cleaning System Reduces Problems and Saves Rig Time. (Removing fragments from a deep water well bore using the vectorized ring cleaning system reduces problems and saves probe time). Also relevant to the field of removing underground fragments are USP 4,276,431 and 6,978,841.
    Current designs of debris removal devices that catch the debris with reverse fluid circulation to the lower end of the tool housing used a straight stretch for the inlet pipe coupled with a baffle at the top, which can be a cone shape 10 like in Figure 1, or a flat plate 12 as in Figure 2. The arrow 14 represents the direction that the solids need to follow to be collected in the chamber 16 that is placed around the inlet tube 18. One of the concerns of the projects in Figures 1 and 2 is that a very long separation chamber, which is between the cone 10 or the plate 12 and the outlet 20, is necessary to separate the fragments of the fluid that flows using gravity and the reduction of the fluid speed that occurs when the current of fluid carrying fragments leaves the inlet tube 18 and goes into the larger diameter of the housing 22 on the way to outlet 20. After outlet 20 there is a sieve and those fragments that do not fall out into the chamber 16 they rise by placing a load on that sieve above which prevents circulation and the ability to pick up fragments in the first place. Increasing the inlet speed in an effort to drag more fragments into the tube 18 also becomes counterproductive in the designs in Figures 1 and 2, since the higher speed after an outlet from the tube 18 also causes greater turbulence and the entrainment of fragments that would otherwise have been allowed to deposit by gravity into the collection chamber 16. Figure 9 illustrates the well-known Baker Hughes VACS, a portion of which is shown in Figures 1 and 2. It also shows that the flow from the outlet 22 goes through a sieve 23 and is then reduced to a feed stream 25 from the surface. After the outlet of the eductor 27, the flow is divided with 29 going to the surface and 31 going to the bottom, inside the inlet tube 18.
    The present invention seeks to improve the separation effect and does so in a smaller space, and in a way that, advantageously, uses higher speeds to improve the separation. This is mainly accomplished by inducing a whirlwind into the stream of incoming fluid that carries fragments. The inlet tube may have spiral grooves or internal protrusions that print the spiral pattern for the fluid stream, so that solids, through centrifugal force, are thrown to the outer periphery on the way out of the housing and the downstream sieve. These and other aspects of the present invention will be more readily apparent to those skilled in the art from a review of the description of the preferred embodiment and the associated drawings, while understanding that the full scope of the invention must be determined from the appended claims. Summary of the invention
    An underground fragment collector swirls the inlet stream which carries fragments by placing grooves or spiral projections on the inside of the inlet tube. In some embodiments, the solids come out of openings on the side of the inlet tube, and in others, the solids can come out near the top, either directly into the closed volume of solids holding when the liquid comes out directly, or the solids can be discharged from the end of the inlet tube into the larger open space defined by the housing. In the latter case, the interior wall of the housing may have a sieve or vanes that reduce the speed of the solid particles when the fluid continues to an outlet of the housing and eventually to an outlet sieve, before being discharged, or to go to the surface , or circulate back along the outside of the tool to the entry tube, while collecting additional fragments. Brief description of the drawings
    A Figura 2 é outra variação da técnica precedente da Figura 1, onde uma placa é localizada acima da saída de topo do tubo de en trada; A Figura 3 mostra um parafuso interno acoplado com aberturas de parede para deixar sólidos girar por meio do parafuso para sair radialmente para um espaço de coleta de fragmentos anelar de topo aberto; A Figura 4 mostra um parafuso interno que conduz a uma saída de fragmentos lateral para uma câmara de coleta superior fechada com uma chicana interna na câmara; A Figura 5 mostra um parafuso no tubo de entrada que conduz a um espaço antes de um topo fechado para o volume de coleta de fragmentos quando o fluido sai direto; A Figura 6 mostra um parafuso no tubo de entrada que conduz a uma saída lateral até uma câmara de coleta superior fechada; A Figura 7 mostra um parafuso no tubo de entrada com fendas laterais onde o fluido deve passar através de aberturas em um tubo central, onde as aberturas estão abaixo do topo fechado do tubode entrada; A Figura 8 ilustra, de maneira esquemática, um tubo de entrada onde o fluido que carrega fragmentos sai junto ao topo do tubo de entrada e os sólidos encontram uma peneira ou rugosidade superficial para perder velocidade axial para cair e depositar em um volume de coleta; A Figura 9 é uma vista em seção de uma ferramenta de remoção da técnica precedente, conhecida como o VACS. Figure 1 is a project of the preceding technique of a fragment removal tool collecting fragments at a bottom location through an inlet tube, with a cone shaped cover at the top; Figure 2 is another variation of the preceding technique of Figure 1, where a plate is located above the top outlet of the inlet tube; Figure 3 shows an internal screw coupled with wall openings to let solids rotate through the screw to exit radially to an open top ring fragment collection space; Figure 4 shows an internal screw that leads to a lateral fragment outlet to a closed upper collection chamber with an internal baffle in the chamber; Figure 5 shows a screw in the inlet tube that leads to a space before a closed top for the fragment collection volume when the fluid comes out directly; Figure 6 shows a screw in the inlet pipe that leads to a side outlet to a closed upper collection chamber; Figure 7 shows a screw in the inlet tube with side slits where the fluid must pass through openings in a central tube, where the openings are below the closed top of the inlet tube; Figure 8 illustrates, schematically, an inlet tube where the fluid that carries fragments leaves near the top of the inlet tube and the solids find a sieve or surface roughness to lose axial speed to fall and deposit in a collection volume; Figure 9 is a sectional view of a tool for removing the prior art, known as the VACS.

    Figure 3 shows an inlet tube 24 that is located in the same position as in the inlet tube 18 in Figure 2, with the differences being that here there is no flat plate 12 in the modality of Figure 3 that otherwise uses the same housing 22 'as in Figure 2. Instead, there is a propeller 26 wound around a support axis 28 which is preferably centered on the tube 24. Above the upper end 30 here there is an axial space in the tube 24 and then it continues as tube 32 through a cover 34. One or more radial openings 36 leading to an annular space 38 that has an open top 40. Fragments that exit through tube 32 then experience a slowdown in zone 42 of housing 22 'and still have an opportunity to fall through the open top 40. Otherwise as with the scheme in the known designs, the fluid current with any of the dragged fragments passes out of the top of the housing 22 ', there being a sieve here out to retain the probably thinner fragments that make the trip out as high as the sieve.
    Figure 4 is somewhat different from Figure 3. It also has a helical screw 44 on the support shaft 46 which is centrally located in the inlet tube 48. The inlet tube 48 has a top closure 50 with an extension tube 52 that protrudes from the closure 50. An annular handle volume 54 is defined between the extension tube 52 and the housing 22. A radial outlet 56 is placed just below the top closure 50 for the heaviest fragments that swirl out. . As soon as these fragments leave the liquid stream that flows through outlet 56, they reach a vertical baffle 58 designed to trim the swirling movement of the fragments in the ring collection space 60 that has a closed bottom that is not shown. Optionally radial fragment outlets 62 along the path to tube 48 can also be used to remove fragments through the swirling action induced by thread 44. Any of the fragments that escape from tube 52 still have an opportunity by reducing speed which occurs after penetrating the larger volume 64 to eventually deposit in the handle volume 54.
    Figure 5 is similar to Figure 4, except that the formed radial outlet 56 is not used and, instead, there is an axial space between the top 66 of the inlet tube 48 and the lower end 68 of the extension tube 52. A chicana 58 is relocated lower than in Figure 4, and outputs of optional radial fragments 62 can also be used. The volume (most) of the solids leaves radially between ends 66 and 68 to penetrate the annular collection space 60.
    Figure 6 illustrates an inlet pipe 70 related to the inlet pipe shown in Figure 2, except that there is a thread 72 which in this embodiment has no central axis. The swirling fragments ideally leave the radial outlet 74 to penetrate the annular collection volume 76 which has a closed top 78. The fluid and some solids that did not exit via the radial outlet 74 come out through the opening 80, and as before, they rise in the housing 22 'to a sieve. Note that the bottom end of the collection volume 76 is not shown.
    Figure 7 is similar to Figure 3, except that the surrounding shell to capture the fragments is omitted to allow a focus on the inlet tube 82 which has a thread 84 on an axis 86, with radial outlets 88 to let the fragments be launched radially for a surrounding collection volume that is not shown. The inlet tube 82 has a closed top 90 while the shaft 86 is mainly solid at its lower end, however it becomes hollow near the top of the thread 84. There are a series of openings 92 into the hollow portion 94 to let the fluid and some fragments that are still dragged out to the surrounding carcass, which is not shown in this view. Hence the flow regime is the same as in Figure 2 and above the baffle 12.
    Figure 8 is a somewhat different approach. The inlet tube 100 sees the penetrating stream of fragments represented by the arrow 102, which at the end has a cover 104 with an inclined deflector 106 just below, to direct the fluid stream out through radial openings 108. In this embodiment the entire stream of fluid leaves the openings 108 with all the fragments and a swirling movement indicated by arrows 110 in the region 112 of the housing 114. The idea here is to minimize the height, and thus the volume of the region 112 by using the flow pattern in tourbillon 110, to make region 112 a separation zone between the fragments and the motor fluid. An option added to the use of the swirl flow pattern 110 is to make the solids that are thrown towards the wall 116 of the housing 114 and use one or more devices on or near the inner wall that the solids contact and lose their amount of axial movement so that they can then fall vertically and out of the spiral flow as indicated by arrow 120. One way to do this is to mount a tubular sieve 118, only half of which is shown to allow showing other options in the same Figure. There is no significant flow of fluid through the sieve 118 into region 122 as there is no fluid outflow from region 122. An alternative to the tubular sieve form next to wall 116 is a surface that becomes rough from the wall itself. Another option are downward and inwardly oriented vanes 124, which also serve the same purpose of reducing the axial movement of the fragments, so that they can fall into the collection volume 126 around the tube 100.
    Other options to induce swirling movement in the inlet pipe of the various modalities are to place a spiral groove or spiral projection 128, shown in Figure 8 as opposed to using a thread that takes the entire inside diameter, as shown, for example, in Figure 4. Another option is to mount the inlet tube on a bearing such as a sleeve, to allow it to rotate on its own axis when a torque of reaction to the spin or printed to the incoming current that leads fragments that engage the pattern of spiral 128. This circular movement around its long axis towards tube 100, for example, is shown as arrow 130. As another alternative if energy is available, tube 100 can be rotated by energy with an electric motor or even a motor battery powered, powered by a locally mounted battery. Rotating the tube such as 100 can also have an incidental benefit of enhancing the storage capacity of the fragment holding volume 126, since the rotating motion will cause the fragments to decant in a more compact manner to improve the quantity of fragments that can be retained in chamber 126.
    The above description is illustrative of the preferred modality, and several modifications can be made by those skilled in the art without departing from the invention, the scope of which must be determined from the literal and equivalent scope of the claims below.
    权利要求:
    Claims (14)
    [0001]
    Fragment removal device for underground use operable to remove fragments using pumped fluid flow, characterized by comprising:
    a housing (22) which has a lower end inlet tube (18, 24) that defines an annular fragment collection volume with said housing (22) and an upper end outlet;
    said inlet tube (18, 24) configured to print a flow for carrying fragments that passes through it for separating fragments of the fluid that flows towards said outlet in said housing (22);
    wherein the fragment collection volume (54) has an impermeable top;
    wherein the inlet to the fragment collection volume (54) is below an upper end of the inlet tube (18, 24) and below a lower end of an outlet tube that extends through the top.
    [0002]
    Device according to claim 1, characterized by the fact that:
    the inlet tube (18, 24) has an elongated inner element that prints a swirl in the fluid that carries fragments.
    [0003]
    Device according to claim 2, characterized by the fact that:
    the elongated interior element comprises a helical shape. characterized by the fact that:
    [0004]
    Device according to claim 3, characterized by the fact that: the helical shape is supported by a central axis.
    [0005]
    Device according to claim 1, characterized by the fact that:
    the volume of collection of fragments (54) comprises at least one baffle oriented to reduce the spiral movement of fragments in said volume of collection of fragments (54).
    [0006]
    Fragment removal device for underground use operable to remove fragments using pumped fluid flow, characterized by comprising:
    a housing (22) with a lower end inlet tube (18, 24) that defines an annular fragment collection volume with the housing (22) and an upper end outlet;
    the volume of collection of fragments (54) having a closed top;
    the inlet tube (18, 24) comprises an elongated inner element;
    the inlet to said fragment collection volume (54) is below an upper end of the inlet tube (18, 24) and below a lower end of an outlet tube that extends through said closed upper part;
    the inner elongate element comprises a helical projection or depression in an inner wall of the tube; wherein the inner elongate element provides rotation for the fluid laden with debris.
    [0007]
    Fragment removal device for underground use operable to remove fragments using pumped fluid flow, characterized by comprising:
    a housing (22) with a lower end inlet tube (18, 24) that defines an annular fragment collection volume ume with the housing (22) and an end outlet the fragment collection volume (54) having a top top;
    the volume of collection of fragments (54) having a closed top;
    the inlet tube (18, 24) comprises an elongated inner element;
    the inlet to the fragment collection volume (54) is below an upper end of the inlet tube (18, 24) and below a lower end of an outlet tube that extends through the closed top;
    the tube having at least one opening in a curved wall of the tube for discharging fragments into or adjacent to the fragment collection volume (54);
    wherein the inner elongate element provides rotation for the fluid laden with debris.
    [0008]
    Fragment removal device for underground use operable to remove fragments using pumped fluid flow, characterized by comprising:
    a housing (22) with a lower end inlet tube (18, 24) that defines an annular fragment collection volume with the housing (22) and an upper outlet end;
    the inlet tube (18, 24) configured to impose a rotation on the charged fragments flow that passes through the inlet tube (18, 24) to separate the fragments from the fluid that flows to the outlet in the housing ( 22) the volume of collection of fragments (54) which has a closed top;
    the entry into the fragment collection volume (54) is below an upper end of the inlet tube (18, 24) and below a lower end below an outlet tube extending through the closed top;
    the entry into the fragment collection volume (54) is at the closed top. characterized by the fact that:
    [0009]
    Device according to claim 8, characterized by the fact that:
    said inlet tube (18, 24) has an elongated inner element that prints a spin on the fluid that carries fragments.
    [0010]
    Device according to claim 9, characterized in that: said elongated inner chamber comprises a helical shape.
    [0011]
    Device according to claim 10, characterized by the fact that: said helical shape is supported by a central axis.
    [0012]
    Device according to claim 9, characterized in that: said elongated interior element comprises a helical projection or depression on an interior wall of said tube.
    [0013]
    Device according to claim 9, characterized by the fact that:
    said tube having at least one opening in its curved wall for discharging fragments into or adjacent to said fragment collection volume (54).
    [0014]
    Fragment removal device for underground use operable to remove fragments using pumped fluid flow, characterized by comprising:
    a housing (22) which has a lower end inlet tube (18, 24) that defines an annular fragment collection volume with the housing (22) and an upper outlet end;
    the inlet tube (18, 24) configured to rotate to a stream loaded with fragments that passes through the inlet tube (18, 24) to separate the fragments from the fluid that flows to the outlet of the housing ( 22);
    the fragment collection volume (54) has a closed top;
    the inlet for the fragment collection volume (54) is / 13 below an upper end of the inlet tube (18, 24) and below a lower end of an outlet tube that extends through the closed top;
    the outlet tube defines a second annular fragment collection chamber on the other side of the closed top.
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    BR112013005886A2|2016-05-10|
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    US20150000896A1|2015-01-01|
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    WO2012036854A2|2012-03-22|
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    WO2012036854A3|2012-05-10|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-08-06| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-02-04| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-04-22| B09A| Decision: intention to grant|
    2020-06-23| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 24/08/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/880,906|2010-09-13|
    US12/880,906|US8584744B2|2010-09-13|2010-09-13|Debris chamber with helical flow path for enhanced subterranean debris removal|
    PCT/US2011/048913|WO2012036854A2|2010-09-13|2011-08-24|Debris chamber with helical flow path for enhanced subterranean debris removal|
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