• 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:
    tool with spherical seat of multiple sizes provided with segmented arched spherical support member. the present invention relates to a tool for use in a borehole that includes a housing provided with a hole for axial flow and a piston sleeve arranged movable in the flow hole. the tool is movable between the first and second operating positions by a drive mechanism that has a piston with a spherical seat having a partially annular shape with an external base and a plurality of retaining segments that project radially into it. the tool can be moved between the first and second operating positions using drive balls of different sizes that can be changed in the spherical seat.
    公开号:BR112012033417B1
    申请号:R112012033417-4
    申请日:2011-08-12
    公开日:2020-03-17
    发明作者:Jeremy J. Guillory；Daniel R. Hart；Gregory L. Hern
    申请人:Baker Hughes Incorporated；
    IPC主号:
    专利说明:

    Invention Patent Descriptive Report for "CIRCULATION VALVE TOOLS AND FOR USE IN UNDERGROUND HYDROCARBONET PRODUCTION".
    BACKGROUND OF THE INVENTION
    FIELD OF THE INVENTION
    [0001] The invention relates to circulation valves and sliding sleeve tools, in particular aspects, the invention relates to the design of spherical seats used in the drive mechanisms for such tools.
    2. DESCRIPTION OF RELATED TECHNIQUE
    [0002] Well hole tools have been designed, which are operated using a ball or plug that is grounded to a seat in the flow hole of the tool column. The ball or plug serves to increase pressure and / or redirect fluid flow through the tool in order to operate the tool. Tools of this type include circulation valves that are used to selectively open and close the side fluid flow ports on a tool to allow flow to flow axially through the tool to be diverted to the surrounding flow hole. Circulation valves of this type are described in United States Patent No. 4,889,199 published by Lee, United States Patent No. 5,499,687 published by Lee, United States Patent No. 7,281,584 published by McGarian et al. and United States Patent No. 7,416,029 published by Telfer et al.
    [0003] The precursor order of this describes the tools that operate when using the spheres or plugs of different sizes. The precursor request for this is the US Patent Application Serial No. 12 / 826,020 filed on June 29, 2010, which is incorporated by reference in its entirety.
    SUMMARY OF THE INVENTION
    [0004] The invention provides a spherical seat that is radially expandable in the chamber parts of an expansion chamber in order to allow a sphere or plug to be passed through the seat.
    [0005] The configuration of the spherical seat allows the spherical seat to be reused and accommodates the spheres or plugs of different sizes.
    [0006] In a currently preferred embodiment, the spherical seat has a partially annular shape, such as a "C". The outer circumference of the spherical seat provides a unitary base that has an arched shape. The retaining segments project radially inward from the base to provide a portion of the seat on which a ball can be grounded. The retaining segments are preferably solid members and are shaped to collectively provide an upper seat surface and an inwardly directed surface. In the currently preferred embodiments, the retention segments are separated from the adjacent retention segments by gaps. It is currently preferred that the outer base of the spherical seat has a shape memory that pushes the spherical seat towards a radially expanded position.
    [0007] The base of the spherical seat can expand radially outward to fit a surrounding casing, in operation, a ball is seated on the spherical seat, and the pressure of the fluid can be intensified against the ball and the spherical seat without the ball is pumped through the seat. When the spherical seat is moved to a housing that has a larger radius, the base is expanded radially as the base returns to its original shape. The retention segments are spread apart from each other so that the gaps between them become larger. Conversely, when the spherical seat is moved into a housing that has a smaller radius, the base of the spherical seat contracts radially. A compression spring applies an axial load to propel the spherical seat towards this contracted position. The retention segments are moved to be closer to each other so that the gaps between them shrink. In a preferred embodiment, the spherical seat is used in an expansion chamber that has at least three parts of the chamber of different diameters. The spherical seat is capable, by design, of expanding to suit each of these three or more parts of the chamber. As a result, the spherical seat is able to selectively hold and release spheres of different sizes.
    [0008] An exemplary circulation valve is described, which incorporates the spherical seat of the present invention. The exemplary circulation valve includes a substantially cylindrical housing with a central axial flow hole and a piston sleeve movably arranged in the flow hole. The tool includes an external housing that defines a hole for axial flow. The external side flow ports are arranged through the housing. The housing retains a piston sleeve that has internal side flow ports, and the movement of the piston sleeve in the housing will cause the internal flow ports to align or misalign with the external flow ports.
    [0009] A splitting mechanism is used to control the axial position of the piston sleeve in the housing. The split mechanism allows the tool to be moved alternatively between a first operating position, in which the external side flow ports are closed for fluid flow, and a second operating position, in which the external lateral flow ports are closed. open for fluid flow. In a described embodiment, the dividing mechanism includes a dividing sleeve with a finned path inscribed on it. The fins are transported by the housing and are arranged in the path for the fin to move them between the various positions in the path as the piston sleeve is moved axially. The axial position of the piston sleeve is managed by the location of the fins on the path to the fin.
    [00010] The tool also represents a drive mechanism that allows the tool to be changed between its first and second operating positions by means of balls or plugs that are grounded at the spherical seat in the piston sleeve. The varying fluid pressure is used to move the piston sleeve axially downward against a tilting force, such as a spring. The downward movement of the piston sleeve moves the spherical seat to a part of the expansion chamber of increased diameter. The increased diameter allows the spherical seat to release a drive ball. The tool requires that one size of the drive ball moves the tool from a first operating position to a second operating position and a second size of the driving ball moves the tool from the second operating position back to the first operating position.
    [00011] During the process of launching the spheres through the tool hole, a positive return indication is provided to a surface operator through the pressure of the resulting fluid in the tool column whereby the tool's operation is confirmed.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [00012] The advantages and additional aspects of the invention will be readily observed by those of ordinary skill in the art as they become better understood by reference to the following detailed description when considered in conjunction with the attached drawings, in which the reference characters designate the same or similar elements throughout the various figures in the drawing, and in which: [00013] Figure 1 is a side cross-sectional view of an exemplary circulation tool sub that includes a spherical seat constructed in accordance with the present invention, the sub circulation being in a first operating position.
    [00014] Figure 1 A is an enlarged cross-sectional view of parts of the spherical seat of the tool shown in Figure 1.
    [00015] Figure 2 is a side cross-sectional view of the tool shown in Figure 1, now in a first intermediate position.
    [00016] Figure 3 is a side cross-sectional view of the tool shown in Figures 1 to 2, now in a second operating position.
    [00017] Figure 4 is a side cross-sectional view of the tool shown in Figures 1 to 3, now in a second intermediate position.
    [00018] Figure 5 is an enlarged side cross-sectional view of parts of the tool shown in Figure 4, in a first operating position. Figure 6 is an enlarged side cross-sectional view of the tool parts shown in Figure 5, now in a first intermediate position.
    [00019] Figure 7 is an enlarged lateral cross-sectional view of the parts of the tool in Figures 5 and 8, now in a second operating position.
    [00020] Figure 8 is an enlarged lateral cross-sectional view of the parts of the tool shown in Figures 5 to 7, now in a second intermediate position.
    [00021] Figure 9 is an isometric view of an exemplary spherical seat constructed in accordance with the present invention and in a fully contracted position.
    [00022] Figure 10 is a top view of the spherical seat shown in Figure 9.
    [00023] Figure 11 is an isometric view of the spherical seat shown in Figures 9 and 10, now, in a partially expanded condition. [00024] Figure 12 is a top view of the spherical seat shown in Figure 11.
    [00025] Figure 13 is an isometric view of the spherical seat shown in Figures 9 to 12, now, in a more expanded condition.
    [00026] Figure 14 is a top view of the spherical seat shown in Figure 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [00027] Figures 1 to 4 illustrate an exemplary circulation valve tool 10 that is constructed in accordance with the present invention. The upper part of the tool 10 is shown on the left side of Figures 1 to 4, while the lower part of the tool 10 is shown on the right side of Figures 1 to 4. The circulation valve tool 10 includes a generally cylindrical outer housing 12 which has an upper axial end 14 and a lower axial end 18. The upper end 14 includes a threaded connection similar to box 18, and the lower end 18 provides a threaded connection similar to pin 20. Connections 18, 20 are of a type known in the art for incorporating tool 10 into a tool column (not shown) and arranged in a well bore. The housing 12 defines a central flow hole 22 along its length. In a preferred embodiment, the housing 12 consists of an upper sub 24 and a lower sub 28 that are threaded together at connection 28. The external side fluid ports 30 are arranged through the housing 12.
    [00028] Located in housing 12, and preferably at the lower end of the upper sub 24, is a staggered expansion chamber, generally shown at 32. Figure 1 A depicts this chamber 32 in more detail. As best seen, the expansion chamber 32 includes three parts of the chamber 32a, 32b and 32c provided with interior diameters that increase sequentially. Chamber part 32a has the smallest diameter. The large diameter chamber part 32c has the largest diameter. The intermediate diameter chamber part 32b has a diameter that is larger than the small chamber part 32a, but is smaller than the large diameter chamber part 32c.
    [00029] A dividing chamber 34 is defined in the housing 12 below the expansion chamber 32. One or more dividing fins 38 are arranged through the housing and project into the dividing chamber 34. Although only a single fin 36 is visible in Figures 1 to 4, it is currently preferred that there are multiple fins 38 that are spaced at an angle around the circumference of the housing 12.
    [00030] Below the dividing chamber 34, a buffer chamber 38 is defined in the housing 12. The side filling doors 40 are arranged through the housing 12 and closed with plugs 42.
    [00031] A piston sleeve 44 is arranged in the expansion chamber 32. The piston sleeve 44 has a generally cylindrical body 46 that defines a central flow path 47. A flange 48 projects radially outwardly from the body 46 and has the internal radial fluid ports 50 arranged therein. The annular fluid seals 51 surround the body 46 and seal against the surrounding housing 12, thereby insulating the fluid ports 50. A spherical seat 52 is located in the flow hole 22 on the piston sleeve 44. An exemplary spherical seat -cativa 52 is depicted in more detail in Figures 9 to 14. Spherical seat 52 has a partially annular shape, such as a "C" shape. The spherical seat 52 includes a portion of the radially arched outer base 53. The base 53 is preferably modeled from a metallic material, such as steel, having a shape memory. The base 53 preferably has an outer radial surface 53a which is axially curved in a convex manner to facilitate the movement of the spherical seat 52 in a surrounding hole and through the transitions in the diameter of the hole. A plurality of retaining segments 54 are affixed to the base 53 and extend radially inward thereto. Retention segments 54 are preferably solid and formed of steel. The retaining segments 54 each have a level and substantially flat upper seating surface 55. Preferably, the upper seating surface has an internal chamfered part 55a. Gaps 57 separate segments 54 from each other. The base 53 and the segments 54 can have a variety of shapes and sizes, as long as they fit the borders of the expansion chamber 32.
    [00032] Note that there is a separation 59 between the ends of the arcuate shape of the spherical seat 52. An opening 61 is defined centrally at the spherical seat 52. Figures 9 and 10 depict the spherical seat 52 in a completely retracted position, in that the central opening is the smallest and separation 59 is minimized. In this completely retracted position, both the smallest and largest ball 84, 86 will be secured by the upper seat surface 55 of the retention segments 54 of the spherical seat 52. Figures 11 and 12 illustrate the spherical seat 52 in a partially enlarged position, in that the separation 59 and the central opening 61 are both larger than in the fully retracted position. In the partially enlarged position shown in Figures 11 and 12, the opening 61 is large enough to allow a small sphere 84 to pass through, but not a wider sphere 86. Figures 13 and 14 depict the spherical seat 52 in a wider position , wherein the separation 59 and the opening 61 are larger than they are in the partially enlarged position. In this wider position, opening 61 is large enough to allow the smaller sphere 84 and the larger sphere 86 to pass through. When the spherical seat 52 is moved from the fully retracted position to any of the extended positions, at least some of the gaps 57 between the retention segments 54 are enlarged. Also, the base 53 is deformed, in plastic terms, radially outward so that the separation 59 is widened.
    [00033] It is also noted that the spherical seat 52 has two axial ends 100, 102. Both axial ends 100, 102 preferably mirror one another in shape. This feature prevents the spherical seat 52 from being installed incorrectly.
    [00034] The design of the spherical seat 52 allows spheres or plugs of various sizes to be attached and released. When the spherical seat 52 is located in the narrowest diameter part 32a, the spherical seat 52 is in the fully retracted position and both a smaller drive ball 84 and a larger drive ball 88 can be seated on the spherical seat 52. When the seat spherical 52 is located in the part of the chamber with intermediate diameter 32b, the spherical seat 52 will be in the partially enlarged position so that the larger drive ball 86 is secured by the spherical seat 52. However, the smaller drive ball 84 will cross the opening 61 of the spherical seat 52. When the spherical seat 52 is located in the part of the chamber with the largest diameter 32c, the spherical seat 52 will be in the widest position and both the smaller sphere 84 and the larger sphere 86 will cross the central opening 61 of the spherical seat 52.
    [00035] A dividing sleeve 56 surrounds a lower part of the body 46 in the dividing chamber 34 and is movable in the dividing chamber 34. The dividing sleeve 56 is generally cylindrical and has a radially enlarged edge portion 58. An annular spring chamber 60 is defined radially between the edge part 58 and the body 46 of the piston sleeve 44. The upper end of the divider sleeve 56 has an internally extending flange 62 that engages the body 46. A compression spring 64 surrounds the sleeve piston 44 and generally resides in the spring chamber 60. The upper end of the compression spring 64 supports the flange 62 while the lower end of the spring 64 supports an annular plug member 66 which is arranged in the division chamber 34 and seals the chamber division 34 of the damping chamber 38. Note that an annular fluid seal 67 forms a seal between the lower sub 26 and piston sleeve 44. Fluid seals 69 are located around and on the plug member 6 6 to provide the seal against the piston sleeve 44 and the split chamber 34.
    [00036] As can be seen with reference to Figures 5 to 8, the dividing sleeve 56 has an external radial surface 68 that has a path for fin 70 inscribed on it. The fin path 70 is shaped and dimensioned to retain the inner ends of each of the fins 36 therein. The fin path 70 generally includes a central circumferential path 72. A plurality of legs extending axially away from the central path 72. Path 70 is designed such that the amount of each type of leg is equal to the number of fins 36 that they are used on path 70. Long legs 74 and short legs 76 extend axially out of central path 72. In addition, long legs 78 and short legs 80 extend axially upward from central path 72.
    [00037] Referring once again to Figures 1-4, it is noted that a damping piston 82 is disposed in damping chamber 38. Damping piston 82 is securely attached to piston sleeve 44 and contains one or more restrictive fluid flow holes 83 that extend entirely through the damping piston 82. The fluid seal 85 radially surrounds the damping piston 82 and forms a fluid seal against the interior wall of the damping chamber 38. A hydraulic fluid fills the damping chamber 38 both above and below the damping piston 82.
    [00038] Tool 10 can be repeatedly switched between a first operating position, in which the external fluid ports 30 are closed against fluid flow, and a second operating position, in which the external fluid ports 30 are opened. for the fluid flow. To do this, drive balls 84 and 86 are launched into the flow hole 22 of tool 10 to cause tool 10 to be driven between these positions. Ball 84 is smaller in size than ball 86. It is further noted that, although the balls are pictured by both balls 84 and 86, a spherical member is not required. Darts or plugs of other shapes and configurations may also be used and such are intended to be included in the general sense of the word "sphere" as used in the present. When tool 10 is initially constituted in a column of the tool and traversed through a hole in the well, it is typically in the first operating position shown in Figure 1, even though ball 84 is not present. The spherical seat 52 is located in the reduced diameter part of the chamber 32a of the expansion chamber 32. The fins 36 are located on the long legs that extend downwards 74 (see Figure 5). In this position, the flow of fluid through the side fluid ports 30 is closed by the divider sleeve 56. The interior fluid flow ports 50 are also not aligned with the external fluid flow ports 30 and the fluid seals 51 are independent of fluid communication with interior doors 50. The fluid can be drained and the tools can axially flow through the flow hole 22 of the tool 10.
    [00039] When it is desired to open the side fluid ports 30 to allow fluid communication between the flow hole 22 and the surrounding well hole, the smaller sphere 84 is thrown into the flow hole 22 where it lands at the spherical seat 52 (see Figures 1 and 1 A). The pressure of the fluid is then increased in the flow hole 22 above the grounded sphere 84. The increased fluid pressure causes the piston sleeve 44 and the fixed divider sleeve 56 to move axially downwardly relative to the housing 12 , as shown in Figure 2. The compression spring 64 is compressed. The fins 36 will move along the path 70 to become located on the legs that extend upwards 36 of the path 70 (see Figure 6). As this axial movement occurs, the dividing sleeve 56 and the piston sleeve 44 are rotated in the housing 12. As the piston sleeve 44 moves axially downward to the first intermediate position depicted in Figures 2 and 6, the spherical seat 52 is moved to the larger diameter part of the chamber 32b of the expansion chamber 32. The enlarged diameter of the part of the chamber 32b allows the opening 61 to expand and release the small sphere 84 as shown. The fins 38 will protrude on the short legs extending upward 80 from the path to fin 70 when the spherical seat 52 is in position to release the ball 84. The released ball 84 can be secured by a ball catcher (not shown) a type known in the art, which is located in the tool column below tool 10.
    [00040] After ball 84 has been released from spherical seat 52, spring 84 will propel piston sleeve 44 and divider sleeve 56 axially upward in housing 12. Upward movement of piston sleeve 44 and divider sleeve 56 will end when the fins 36 protrude from the short legs that extend downward 76 of the path to fin 70. Tool 10 will now be in the second operating position depicted in Figures 3 and 7. In this operating position, the internal fluid flow ports 50 of the piston sleeve 44 are aligned with the external fluid flow ports 30 of the housing 12 so that fluid can flow between the internal fluid hole 22 and the surrounding well hole. It is also noted that the spherical seat 52 is now once again located radially in the chamber part 32a of the expansion chamber 32.
    [00041] When it is desired to return tool 10 to the first operating position (closed) depicted in Figures 1 and 5, the larger sphere 86 is thrown into the flow hole 22 and grounded at the spherical seat 52. The fluid pressure is, then varied and increased in the flow hole 22 above ball 86. The increased fluid pressure will propel piston sleeve 44 and divider sleeve 56 axially downward in housing 12 and compress spring 64. Tool 10 is now , in the second intermediate position depicted by Figure 4. The fins 36 are moved to the long legs that extend upwards 78 from the path to fin 70 (see Figure 8). As a result, the spherical seat 52 is moved downward to the large diameter chamber part 32c of the expansion chamber 32, thereby allowing the central opening 61 to be adequately enlarged to allow the larger sphere 86 to be released from the seat spherical 52.
    [00042] As the larger ball 86 is released from spherical seat 52, spring 64 will propel piston sleeve 44 and divider sleeve 56 axially up again and return the tool to the first operating position illustrated in Figures 1 and 5. From this first operating position, it can once again be switched to the second operating position (Figures 3 and 7) and back again by repeating the steps described above. Note that tool 10 can be changed between the first and second operating positions repeatedly by sequentially using a smaller sphere 84 followed by a larger sphere 86. Those skilled in the art will understand that, because of the path to the vane 70 to surround divider sleeve 56 in a continuous manner, the steps described above can be repeated to rotate tool 10 between operating positions.
    [00043] Only a smaller sphere 84 will be useful for moving tool 10 from the first operating position (closed) to the second operating position (open). If a large ball 86 were grounded at spherical seat 52 when tool 10 was in the first operating position (Figures 1 and 5), large ball 86 would not be released from spherical seat 52 when seat 52 was moved downwards to the part of the chamber with intermediate diameter 32b (Figure 2). The fins 36 will protrude on the legs 80 of the trajectory for fin 70 (Figure 6). The pressure in the flow hole 22 will have to be varied to be reduced to allow the tool 10 to move to the position depicted in Figures 3 and 7. Consequently, the fluid pressure can once again be varied and increased in the hole flow rate 22, which will move the tool 10 to the second intermediate position shown in Figures 4 and 8, and the larger sphere 86 will be released as the spherical seat 52 is moved to the large diameter chamber part 32c. Conversely, only a larger sphere 86 will be useful for moving tool 10 from the second operating position (open) to the first operating position (closed). If a smaller sphere 84 is launched and destined to be grounded at the spherical seat 52 when the tool 10 is in the second operating position (Figures 3 and 7), it would pass through the opening 61 of the spherical seat 52 once the spherical seat 52 was located in the part of the chamber with intermediate diameter 32b. As a result, with the smaller sphere 84, the tool 10 is unable to be moved to the second intermediate position (Figures 4 and 8) because it will release the smaller sphere 84 before the tool can reach the second intermediate position.
    [00044] During the movements of piston sleeve 44 and divider sleeve 56 described above, a damping assembly including damping chamber 38 and damping piston 82 controls the relative speed of these components in housing 12. For example, As piston sleeve 44 is moved axially downward in housing 12 (as it would when moving from the position shown in Figure 1 to the position shown in Figure 2) the fixed damping piston 82 will be pushed downward in the damping 38. The fluid below the damping piston 82 in the damping chamber 38 must be transferred through the damping piston 82 through the orifice 83 in order to accommodate the damping piston 82. This fluid transfer requires some time to occur because of orifice 83 is restrictive. Therefore, the rate of movement of the damping piston 82 and the fixed piston sleeve 44 is slowed.
    [00045] It should be understood that tool 10 provides a drive mechanism that has a spherical seat 52 that will release the spheres with different sizes 84 and 86 when tool 10 is deflected from each of the two operating positions. It is also noted that the tool 10 is operated using the drive balls 84 and 86 which have different sizes. Only large ball 86 can close tool 10, and only small ball 84 can open tool 10. As a result, it is easy for an operator to keep track of what position tool 10 is in. This feature helps to ensure that the unwanted return of the tool 10 to its first operating position does not occur. This is because a smaller ball 84 will be released by spherical seat 52 before it moves divider sleeve 56 to the first operating position, and only using a larger ball 86 will work to return tool 10 to its first operating position. .
    [00046] The foregoing description is directed to the particular modalities of the present invention for the purpose of illustration and explanation. It will be evident, however, to a person skilled in the art that many modifications and changes in the modalities set out above are possible without departing from the scope and spirit of the invention.
    权利要求:
    Claims (20)
    [1]
    1. Tool (10) for use in underground hydrocarbon production, characterized by the fact that it comprises: a housing (12) that defines a hole for axial flow (22); an axially movable piston sleeve (44) arranged in the flow hole between a first position corresponding to a first operating position for the tool (10), and a second position corresponding to a second operating position for the tool (10 ); a drive mechanism for moving the tool (10) between the first and second operating positions, the drive mechanism comprising a spherical seat (52) partially annular with the piston sleeve (44), the spherical seat being (52) comprises: an arched base (53); a plurality of retaining segments (54) that project radially inward from the base and separated by gaps, with the retaining segments (54) each having an upper seat surface (55) for a ball; a central opening (61) defined in the retaining segments (54); where: a) the drive mechanism moves the tool (10) from the first operating position to the second operating position by grounding a first driving ball (84) at the spherical seat (52) and consequently, varying the fluid pressure in the hole for flow of the housing (12); and b) the drive mechanism moves the tool (10) from the second operating position to the first operating position by grounding a second drive ball (86) which is a different size than the first drive ball (84) at the spherical seat (52) and, consequently, varying the pressure of the fluid in the hole for flow of the housing (12).
    [2]
    2. Tool (10) according to claim 1, characterized by the fact that the drive mechanism additionally comprises: an expansion chamber formed in the housing (12), the expansion chamber having a plurality of parts of the chamber of different diameters, in which the central opening (61) of the spherical seat (52) has a first diameter when the spherical seat (52) resides in one of said plurality of parts of the chamber; and the central opening (61) has a second diameter that is larger than the first diameter when the spherical seat (52) resides in another of said parts of the chamber.
    [3]
    3. Tool (10) according to claim 2, characterized by the fact that there are three parts of the chamber and in which the central opening (61) has a third diameter when the spherical seat (52) resides in a third part of the chamber.
    [4]
    4. Tool (10) according to claim 1, characterized in that it additionally comprises a splitting mechanism that manages the axial position of the piston sleeve (44) with respect to the housing (12).
    [5]
    Tool (10) according to claim 1, characterized in that it further comprises: an external lateral fluid port formed in the housing (12); an internal side fluid port formed on the piston sleeve (44); wherein the internal side fluid port is not aligned with the external fluid port when the tool (10) is in the first operating position; and the internal side fluid port is aligned with the external fluid port when the tool (10) is in the second operating position.
    [6]
    6. Tool (10) according to claim 1, characterized in that the spherical seat (52) additionally comprises the first and the second axial ends that mirror each other.
    [7]
    7. Tool (10) according to claim 1, characterized in that it additionally comprises a damping assembly to control the speed of the relative axial movement of the piston sleeve (44) in relation to the housing (12), the assembly of damping comprises: a damping chamber (38) defined between the housing (12) and the piston sleeve (44), the damping chamber (38) being filled with a fluid; a damping piston (82) attached to the piston sleeve (44) and arranged in the damping chamber (38); and a restrictive orifice (83) arranged through the piston to allow fluid to be transferred through the piston.
    [8]
    8. Tool (10) according to claim 1, characterized in that it can be rotated between the first and second operating positions repeatedly.
    [9]
    9. Circulation valve tool (10) for use in underground hydrocarbon production characterized by comprising: a housing (12) that defines a hole for axial flow (22) and has an external lateral fluid port formed therein; an axially movable piston sleeve (44) arranged in the flow hole that has an internal lateral fluid port, the piston sleeve (44) being movable between a first position which corresponds to a first operating position for the tool (10) and a second position corresponding to a second operating position for the tool (10); a drive mechanism for moving the tool (10) between the first and second operating positions, the drive mechanism comprising a spherical seat (52) associated with the piston sleeve (44), the spherical seat (52 ) comprises: an arched base (53); a plurality of retaining segments (54) that project radially inward from the base and separated by gaps, with the retaining segments (54) each having an upper seat surface (55) for a ball; a central opening (61) defined in the retaining segments (54); where: a) the drive mechanism moves the tool (10) from the first operating position to the second operating position by grounding a first driving ball (84) at the spherical seat (52) and consequently, varying the fluid pressure in the hole for flow of the housing (12); and b) the drive mechanism moves the tool (10) from the second operating position to the first operating position by grounding a second drive ball (86) which is a different size than the first drive ball (84) at the spherical seat (52) and, consequently, varying the pressure of the fluid in the hole for flow of the housing (12); a first drive ball (84); and a second drive ball (86) which is of a different size from the first drive ball (84).
    [10]
    10. Tool (10) according to claim 9, characterized by the fact that the drive mechanism additionally comprises: an expansion chamber formed in the housing (12), the expansion chamber having a plurality of parts of the chamber of different diameters, wherein the central opening (61) of the spherical seat (52) provides a first diameter when the spherical seat (52) resides in one of said plurality of chamber parts; and the central opening (61) provides a second diameter when the spherical seat (52) resides in another of said parts of the chamber.
    [11]
    11. Tool (10), according to claim 10, characterized by the fact that there are three parts of the chamber and in which the central opening (61) has a third diameter when the spherical seat (52) resides in a third part of the chamber.
    [12]
    12. Tool (10) according to claim 9, characterized in that it additionally comprises a splitting mechanism that manages the axial position of the piston sleeve (44) with respect to the housing (12).
    [13]
    13. Tool (10) according to claim 9, characterized in that the spherical seat (52) additionally comprises the first and the second axial ends that mirror each other.
    [14]
    14. Tool (10) according to claim 9, characterized in that it additionally comprises a damping assembly to control the speed of the relative axial movement of the piston sleeve (44) in relation to the housing (12), the assembly being The damping chamber comprises: a damping chamber (38) defined between the housing (12) and the piston sleeve (44), the damping chamber (38) being filled with a fluid; a damping piston (82) attached to the piston sleeve (44) and arranged in the damping chamber (38); and a restrictive orifice (83) arranged through the piston to allow fluid to be transferred through the piston.
    [15]
    15. Circulation valve tool (10) for use in underground hydrocarbon production characterized by comprising: a housing (12) that defines a hole for axial flow (22) and has an external lateral fluid port formed therein; an axially movable piston sleeve (44) arranged in the flow hole that has an internal lateral fluid port, the piston sleeve (44) being movable between a first position corresponding to a first operating position for the tool ( 10) and a second position corresponding to a second operating position for the tool (10); a drive mechanism for moving the tool (10) between the first and second operating positions, the drive mechanism comprising a spherical seat (52) associated with the piston sleeve (44), the spherical seat (52 ) comprises: an arched base (53); a plurality of retaining segments (54) that project radially inward from the base and separated by gaps, with the retaining segments (54) each having an upper seat surface (55) for a ball; a central opening (61) defined in the retaining segments (54); wherein the drive mechanism moves the tool (10) from the first operating position to the second operating position by grounding a first driving ball (84) at the spherical seat (52) and, consequently, varying the fluid pressure in the bore for housing flow (12), and where the drive mechanism moves the tool (10) from the second operating position to the first operating position by grounding a second drive ball (86) which is a different size than the first actuation ball (84) in the spherical seat (52) and, consequently, varying the pressure of the fluid in the hole for flow of the housing (12).
    [16]
    16. Tool (10) according to claim 15, characterized in that it additionally comprises a damping assembly to control the speed of the relative axial movement of the piston sleeve (44) with respect to the housing (12).
    [17]
    17. Tool (10) according to claim 15, characterized by the fact that the drive mechanism additionally comprises: an expansion chamber formed in the housing (12), the expansion chamber having a plurality of parts of the chamber of different diameters, wherein the central opening (61) of the spherical seat (52) provides a first diameter when the spherical seat (52) resides in one of said plurality of chamber parts; and the central opening (61) has a second diameter that is larger than the first diameter when the spherical seat (52) resides in another of said parts of the chamber.
    [18]
    18. Tool (10), according to claim 17, characterized by the fact that there are three parts of the chamber and in which the central opening (61) has a third diameter when the spherical seat (52) resides in a third part of the chamber.
    [19]
    19. Tool (10) according to claim 15, characterized in that it additionally comprises a splitting mechanism that manages the axial position of the piston sleeve (44) with respect to the housing (12).
    [20]
    20. Tool (10), according to claim 15, characterized by the fact that it can be rotated between the first and second operating positions repeatedly.
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    同族专利:
    公开号 | 公开日
    GB2494324A|2013-03-06|
    GB2494324B|2018-05-09|
    AU2011293729A1|2012-12-06|
    GB201221172D0|2013-01-09|
    WO2012027135A2|2012-03-01|
    AU2011293729B2|2014-07-31|
    NO20121354A1|2013-02-08|
    WO2012027135A3|2012-05-10|
    BR112012033417A2|2016-11-29|
    US20110315390A1|2011-12-29|
    US8356671B2|2013-01-22|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-01-14| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-03-17| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/08/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/860,985|US8356671B2|2010-06-29|2010-08-23|Tool with multi-size ball seat having segmented arcuate ball support member|
    US12/860,985|2010-08-23|
    PCT/US2011/047568|WO2012027135A2|2010-08-23|2011-08-12|Tool with multisize ball seat having segmented arcuate ball support member|
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