• 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:
    valve and valve operation method. this is a valve (10) and a method of use wherein the valve includes a housing (12) having an axial flow bore (14) defined along its length. a lateral fluid flow port is disposed through the housing (12). a piston sleeve (38) is disposed within the flow hole and is movable to selectively block flow through the side flow port. the valve can be moved between operating positions where flow through the side flow port is blocked or allowed and axial flow through the flow hole is blocked or allowed.
    公开号:BR112015007051B1
    申请号:R112015007051-5
    申请日:2013-09-04
    公开日:2021-07-27
    发明作者:Mohsen Ali；Gregory Lee Hern；Daniel Hart；Yang Xu
    申请人:Baker Hughes Incorporated；
    IPC主号:
    专利说明:

    CROSS REFERENCE TO RELATED ORDERS
    [001] This document claims the benefit of US Patent Application Serial No. 13/644,071, filed October 3, 2012, which is a continuation-in-part of US Patent Application Serial No. 13 /469,852 (US 2012/0227973), filed May 11, 2012, which is a continuation-in-part of US Serial No. 12/860,985 (US 2011/0315390), filed August 23 of 2010, which is a continuation-in-part of Patent Application Serial No. 12/826,020 (US 2011/0315389), filed June 29, 2010. BACKGROUND OF THE INVENTION FIELD OF THE INVENTION
    [002] The present invention relates in general to the design of circulation valves and sliding sleeve tools. DESCRIPTION OF RELATED TECHNIQUE
    [003] Wellbore tools have been developed that are operated by a ball or plug that is loosened (a) on the tool and rested (a) on the seat inside the tool. The ball or plug serves to increase pressure and/or to 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 side fluid flow ports on a tool sub to allow flow to flow axially through the tool to be diverted into the surrounding flow hole.
    [004] The original application in relation to this describes tools that operate by using balls and plugs of different sizes. The original application in connection with this application is US Patent Application Serial No. 13/469,852, filed May 11, 2012, which is incorporated herein by reference in its entirety. SUMMARY OF THE INVENTION
    [005] The present invention provides tools for use in underground production of hydrocarbons. In one embodiment described, a circulation valve is provided which has an axial flow hole through which fluid flows. One or more lateral fluid flow ports are disposed through the valve housing. The circulation valve includes a circulation sub and a ball catcher sub. The sub ball catcher includes a ball catcher apparatus that removes the actuating balls from the axial flow hole and deposits them in a holding chamber that radially surrounds the flow hole.
    [006] The circulation valve can be operated between an initial operating position, where lateral fluid flow through the valve lateral fluid ports is blocked and axial flow through the valve is allowed, to an operating position in that flow through the valve side fluid flow ports is allowed and axial flow through the valve is also allowed. In addition, the circulation valve can also be moved from the initial operating position to an alternate operating position where flow through the lateral fluid flow ports is allowed, but axial flow through the valve is blocked. In a described modality, the circulation valve is moved between the operating positions, providing properly sized actuation spheres (small, medium or large) in the flow hole and resting them on the upper and/or lower ball seats .
    [007] The circulation valve includes an actuation mechanism to move the circulation sub between operating positions. The actuation mechanism includes a radially expandable upper ball seat carried by a piston sleeve. The piston sleeve is movably located within an expansion chamber which has several chamber portions of different diameters. The piston sleeve is also movable between positions where it blocks or permits fluid flow through at least one side flow port. Resting an actuating ball on the upper ball seat allows fluid pressure within the circulation sub to move the piston sleeve from one position to another.
    [008] The actuation mechanism also includes a lower ball seat within the sub ball catcher. The lower ball seat is adapted to capture and release properly sized actuating balls. A medium or large size actuating ball can be captured by the ball seat. However, a small actuation ball can pass through the lower ball seat.
    [009] The circulation valve is moved from the initial operating position to the lateral operating position and axial flow allowed when a small ball is disposed in the flow hole of the valve. The circulation valve is moved from the initial operating position to the lateral allowable flow/axial blocked flow operating position when a medium-sized actuating ball is disposed in the flow hole of the valve. The circulation valve is moved back to its initial operating position when a large actuating ball is placed in the valve's flow hole.
    [0010] The ball catcher sub includes a lower ball seat and a ball catcher apparatus. The ball catch apparatus is designed to capture small, medium-sized and large acting balls that rest inside the circulation valve and retain them in a chamber that is radially outside the valve's central flow hole. The lower ball seat is connected to a movable sleeve which is biased axially by a compression spring towards a closed position. Resting an actuating ball on the ball seat and increasing a fluid pressure behind the actuating ball can open a side passage through which an actuating ball can pass into a radially surrounding annular retaining chamber the glove.
    [0011] The design and features of the valve allow lost circulating material to be retained within the tool during lateral flow operations. BRIEF DESCRIPTION OF THE DRAWINGS
    [0012] For a complete understanding of the present invention, reference is made to the following detailed description of the preferred embodiments, taken in conjunction with the accompanying drawings, in which like numerical references designate like or similar elements throughout the various figures of the drawings and in what:
    [0013] Figures 1A to 1E are a cross-sectional side view of an exemplary circulation valve constructed in accordance with the present invention in an initial insertion position where axial flow through the valve is allowed, but fluid flow side through the valve is blocked.
    [0014] Figures 2A to 2E are a cross-sectional side view of the circulation valve shown in Figures 1A to 1E, now in an intermediate position where a small or medium-sized ball is used to move the circulation valve 10 between the first and second operating positions.
    [0015] Figures 3A to 3E are a cross-sectional side view of the circulation valve shown in Figures 1A to 1E and 2A to 2E, now in an operating position where the lateral fluid ports are open to fluid flow and axial flow through the valve is blocked.
    [0016] Figures 4A to 4E are a cross-sectional side view of the circulation valve shown in Figures 1A to 1E, 2A to 2E and 3A to 3E, now in an intermediate position where the side fluid flow ports are open to fluid flow and axial flow through the valve is also allowed.
    [0017] Figure 5 is an axial cross-section taken along lines 5-5 in Figure 4D.
    [0018] Figure 6 is an enlarged and partial cross-section of the valve portions shown in Figures 1A to 1E in an operating position.
    [0019] Figure 7 is an enlarged and partial side cross-section of the valve portions shown in Figure 6, now in a first intermediate position.
    [0020] Figure 8 is an enlarged and partial side cross-section of the valve portions shown in Figure 6, now in a second operating position.
    [0021] Figure 9 is an enlarged and partial side cross-section of the valve portions shown in Figure 6, now in a second intermediate position. DETAILED DESCRIPTION OF THE PREFERRED MODALITIES
    [0022] Figures 1A to 1E illustrate an exemplary circulation valve 10 constructed in accordance with the present invention. The circulation valve 10 includes an outer housing, generally indicated at 12, which has a female threaded connection 13 at its upper axial end and a threaded pin connection 16 at its lower axial end. An axial flow hole 14 is defined along the length of housing 12.
    [0023] The exemplary circulation valve 10 generally includes an upper circulation sub 18 and an affixed ball catcher sub 20. Unless otherwise stated herein, the circulation sub 18 is constructed and operates in the same manner as the tool. of a circulation valve which is described in detail in the original patent application under US Serial No. 13/469,852. The circulation sub 18 includes a generally cylindrical circulation sub housing 22. In a currently preferred embodiment, the housing 22 is comprised of an upper housing portion 24 and a lower housing portion 26 that are threaded together at the connection 28. Lateral outflow ports 29 are disposed through housing 22 and allow for fluid communication between outflow hole 14 and an area radially surrounding housing 22.
    [0024] Situated within the housing 22 and preferably within the lower end of the upper housing portion 24 is a stepped expansion chamber, generally shown at 30. The expansion chamber 30 includes three chamber portions 30a, 30b and 30c that have inner diameters that increase sequentially. The large diameter chamber portion 30c has the largest diameter. The intermediate diameter chamber portion 30b has a diameter that is larger than that of the small chamber portion 30a, but is smaller than that of the large diameter chamber portion 30c.
    [0025] A reference chamber 32 is defined within the housing 22 below the expansion chamber 30. One or more reference lugs 34 are disposed across the housing 22 and protrude into the reference chamber 32. Although two lugs 34 are shown, there may be more or less than two handles 34.
    [0026] A piston sleeve 38 is disposed within the flow hole 14. The piston sleeve 38 has a generally cylindrical body that defines a central axial flow path 40 along its length. A flange 42 protrudes radially outward from the piston sleeve body 38. An annular fluid seal 43 provides a dynamic fluid seal between the stepped expansion chamber 30 and the piston sleeve 38. Inner radial fluid ports 44 are disposed through the piston sleeve body 38 and allow for fluid communication between the flow path 40 and an area that radially surrounds the piston sleeve 38. The annular fluid seals 46 surround the piston sleeve 38 and seal against the surrounding accommodation 22.
    [0027] The piston sleeve 38 includes a reference portion 48. An extension sleeve 50 extends downwardly from the piston sleeve 38. An annular spring chamber 52 is defined radially between the housing 22 and the extension sleeve 50. A compression spring 54 is generally located within the spring chamber 62. The upper axial end of the compression spring 54 is in contact with a bearing 56 which is in contact with the lower end of the piston sleeve 38. The axial end The lower end of the compression spring 54 is in contact with an upper housing portion 58 of the sub ball catcher 20. A ferrule 64 is preferably secured to the upper end of the piston sleeve 38.
    [0028] An upper ball seat 66 is movably disposed within the flow hole 14 and includes a base ring 68 with a plurality of lugs 70 extending axially therefrom. An arcuate segment 72 is formed at a distal end of each loop 70. The arcuate segments 72 collectively have an inwardly and upwardly directed seating surface 74 on which an actuating ball can be seated.
    [0029] When arcuate segments 72 are situated in chamber portions of different sizes 30a, 30b and 30c, they can be expanded away from each other or moved closer together to allow balls of various sizes are captured and released by the ball seat 66. When the arcuate segments 72 are situated within the smaller smaller diameter portion 30a (see Figure 1A), the seating surface 74 is in a fully retracted position. Therefore, a smaller actuation ball 76, as well as a medium size actuation ball 78 or a large actuation ball 80 can be seated and retained on the seating surface 74. When arcuate segments 72 are situated within the intermediate diameter portion 30b (Fig. 2B), the seating surface 74 is in a partially enlarged position since the segments 72 are spaced apart from each other within the boundaries of the chamber portion 30b. The smaller actuation ball 76 or the medium size actuation ball 78 can pass through the central opening of the seating surface 74 in this configuration. However, a large 80 scope of action is not released. An exemplary sphere size for the small sphere 76 is 2.4 centimeters. An exemplary size for the medium size sphere 78 is 5.72 centimeters. An exemplary size for the large 80 ball is 6.03 centimeters.
    [0030] When the arcuate segments 72 are situated within the larger diameter chamber portion 30c, the seat 52 is in an even more enlarged position and each of the three dimensioned balls 76, 78 and 80 pass through the central opening of the seating surface 74, releasing them. It is noted that, although the spherical balls 76, 78 and 80 are illustrated in the drawings, the term "sphere" as used in this document is to be considered as encompassing similar but non-spherical caps and members of various shapes that perform the same functions as the spheres 76, 78 or 80 described in this document.
    [0031] As can be seen in relation to Figures 6 to 9, the reference portion 48 of the piston sleeve 38 is situated within and is movable within the reference chamber 32. The reference portion 48 has an inscribed loop path 82 in the same. Loop path 82 is shaped and sized to receive within it the interior ends of loops 34. Loop path 82 generally includes a central circumferential path 84. A plurality of legs extend axially away from the center path 84. Path 82 is designed so that the number of each leg type is equal to the number of handles 34 that are used with path 82. Long legs 86 and short legs 88 extend downward from center path 84. , the long legs 90 and the short legs 92 extend upward axially from the center path 84.
    [0032] The ball catcher sub 20 includes a lower ball seat 100 that is movably disposed within the housing portion 58 above a ball catcher apparatus 102. Except for the differences described hereinafter, the catcher apparatus ball 102 is generally of the type described in US Patent No. 8,118,101 ("Retaining Capable Ball Catcher") by Nelson et al. Patent No. 8,118,101 is owned by the assignee of the present application and is incorporated in its entirety herein by reference. Ball catch apparatus 102 includes a sleeve 104 that is retained so as to be largely movable within a retention chamber 106. The sleeve 104 defines a central axial passage 108 along its length. Pass 108 has an inlet 110 of enlarged diameter. A reduced diameter section 112 is located directly below inlet 110 within passage 108. Side outlet 114 is disposed through sleeve 104. Side outlet 114 is sized to allow actuation balls 76, 78 and 80 to pass therethrough. from passage 108 to retention chamber 106. A shoulder 115 is formed in housing portion 58 and helps prevent balls from passing through side outlet 114 when unscheduled. A compression spring 116 urges sleeve 104 axially upward and into contact with lower ball seat 100. As seen in Figure 1C, lower ball seat 100 is initially retained against a shoulder 117. A sleeve guide Spiral 118 is preferably formed around the outer surface of the sleeve 104 to help align the multiple actuating balls within the retention chamber 106.
    The lower ball seat 100 is operable in association with an expansion chamber 120. The lower ball seat 100 is constructed and operates in a similar manner to the upper ball seat 66 described above. Lower ball seat 100 includes a base ring 122, lugs 124, and arcuate segments 126. A small actuating ball 76 passes through the lower ball seat 100 without being captured. The medium and large size actuating balls 78 and 80 are captured by the lower ball seat 100. But when the lower ball seat 100 is moved down axially to a position where the arcuate segments 126 are situated inside expansion chamber 120 (see Fig. 3D), arcuate segments 126 can move apart so that a medium-sized ball 78 and a large ball 80 can pass through the ball seat 100. Figures 2D and 5 illustrate a small actuating ball 76 after passing through the ball seat 100, preparing to exit the side exit 114 into the holding chamber 106.
    [0034] The circulation valve 10 can be moved from the initial insertion position shown in Figure 1 to an operating position where the lateral fluid flow ports 29 are open. When it is desirable to open the lateral fluid ports 29 to allow fluid communication between the flow hole 14 and an area that radially surrounds the housing 12, a small actuation ball 76 or a medium size actuation ball 78 is released. in the flow hole 14 and resting on the upper ball seat 66. Fluid pressure behind the actuating ball 76 or 78 urges the piston sleeve 38 downward axially relative to the housing 12. The compression spring 54 is compressed . Each handle 34 moves along the handle path 82 of the reference portion 48 from the downwardly extending long leg 86 (see Fig. 6) to the upwardly extending short leg 92, as shown in Figure 7. As the piston sleeve 38 is moved axially, it is also rotated within the housing 12. When the handle 34 is located on the upwardly extending leg 92, the arcuate segments 72 of the upper ball seat 66 are situated within the intermediate diameter chamber portion 30b. As described in greater detail in the original order for this, the small ball 76 or the medium size ball 78 is released from the upper ball seat 66. Upon release of the small/medium size ball 76/78, the spring of compression 54 urges piston sleeve 38 and upper ball seat 66 upward axially within housing 12. 88 (Figure 8). In that position, the inner radial fluid ports 44 are aligned with the lateral fluid flow ports 29 of the housing 12, thereby allowing lateral fluid flow through the ports 29.
    [0035] The released small or medium size actuating ball 76 or 78 descends through the extension sleeve 50 and rests on the lower ball seat 100. If a small ball 76 is used, the small ball 76 passes directly through the ball seat less than 100 without being captured by it. As illustrated in Figures 4D and 5, the small ball 76 is secured against the shoulder 115 which prevents the small ball 76 from entering the retention chamber 106. In this position, axial fluid flow through the flow hole 14 of the valve 10 is allowed.
    [0036] If a medium size ball 78 is used to open the side fluid flow ports 29, the medium size ball 78 is thereafter captured by the lower ball seat 100, as shown in Figure 3D. In this alternate operating position, the medium-sized ball 78 blocks axial fluid flow through the flow hole 14. Due to the fact that the lateral fluid flow ports 29 are also open to fluid flow, the internal pressure within the flow hole 14 is too low to create a pressure differential across sleeve 104 sufficient to compress spring 116.
    [0037] The circulation valve 10 can be moved back to its original insertion position by releasing a large actuating ball 80 in the flow hole 14. The large ball 80 rests on the upper ball seat 66 and the pressure of fluid urges the ball seat 66 and piston sleeve 38 down axially within the housing 12. The handles 34 are moved from the downwardly extending leg 88 to the long upwardly extending leg 90 ( see Fig. 9). When the lugs 34 are located on the leg 90, the arcuate segments 72 of the upper ball seat 66 are located within the large portion of expansion chamber 30c, which allows the arcuate segments 72 to space apart radially to allow the large ball 80 is released from upper ball seat 66. As large ball 80 is released from upper ball seat 66, spring 54 urges piston sleeve 38 and upper ball seat 66 back to their position of original insert as shown in Figures 1A through 1E. Those skilled in the art can deduce that, because the loop path 82 radially circles the reference portion 48 in a continuous manner, the steps described above can be repeated to circulate the tool 10 between the operating positions where the ports Sides 29 are open to or closed to fluid flow.
    [0038] It is noted that the large actuating ball 80, after being released from the upper ball seat 66, rests on the lower ball seat 100 and is subsequently released from the lower ball seat 100 as the arcuate segments 126 of the lower ball seat 100 are moved into the expansion chamber 120. Due to the fact that the large actuating ball 80 closes the lateral fluid ports 29, the fluid pressure within the flow hole 14 grows sufficiently behind the large actuating ball 80 and urges sleeve 104 downward, compressing spring 116 and allowing large actuating ball 80 and medium size actuating ball 78 to be released from lower ball seat 100.
    [0039] Upon releasing the lower ball seat, the medium size ball 78 and large ball 80 can enter the holding chamber 106 through the side outlet 114. If a small size ball 76 is used to open the doors of sideways circulation, it is possible for it to enter the holding chamber 106 through the side outlet 114 when hydraulic pressure on the oversize ball 80 moves the sleeve 104 downward. Thereafter, the flow hole 14 opens to allow fluid to flow axially through the valve 10.
    [0040] In operation, the circulation valve 10 is typically incorporated with a tool spring and disposed in a wellbore or other surrounding pipe. Fluid is drained down through valve 10 during operation. The circulation valve 10 can be operated between multiple operating positions by releasing suitably sized balls in the flow hole 14 of the valve 10. Figures 1A to 1E illustrate the circulation valve 10 in an initial insertion position where the flow axial through valve 10 is allowed and side flow ports 29 are closed to fluid flow. Figures 2A to 2E illustrate the circulation valve 10 in an intermediate position where the small ball 76 or the medium size ball 78 is used to move the circulation valve 10 between the first and second operating positions. Figures 3A to 3E illustrate the circulation valve 10 in an operating position where the lateral fluid ports 29 are open to fluid flow and the axial flow through the valve 10 is blocked by a medium-sized ball 78. The Figures 4A to 4E show the circulation valve 10 in an intermediate position where the lateral fluid flow ports 29 are open to fluid flow and axial flow through the valve 10 is also allowed.
    [0041] In alternative configurations, ball seats 66 and 100 can be replaced by other ball seat designs such as those described in the original order in relation to this one.
    [0042] Valves constructed in accordance with the present invention can, for example, be used as a circulation valve that provides the option of isolating axial fluid flow while continuing to allow flow through the lateral fluid flow ports 29. This feature can be useful to remove loss of circulating material from the flow hole during operation by pumping it through the side fluid flow ports 29. Block axial flow through the tool while allowing flow through the side ports is also desirable if the circulation valve is used as a jet sub. Maximizing flow through side fluid flow ports 29 increases the efficiency of dislodged debris that may be trapped in the wellbore or in a blowout preventer.
    [0043] Those skilled in the art can deduce that several modifications and changes can be made in the exemplary designs and modalities described in this document and that the invention is limited only by the following claims and any equivalents thereof.
    权利要求:
    Claims (18)
    [0001]
    1. Valve (10) characterized by comprising: a housing (12) defining an axial flow hole (14) along its length; a lateral fluid flow port disposed across the housing (12) that provides fluid communication between the flow hole and an area radially surrounding the housing (12); a piston sleeve (38) disposed within the flow hole and movable to selectively block fluid flow through the side flow port; wherein the valve is movable between: an initial operating position where fluid flow through the flow hole is allowed and flow through the lateral fluid flow port is blocked and any of: a flow operating position lateral where axial fluid flow through the flow hole is allowed and flow through the lateral fluid flow port is allowed; and an alternate operating position in which axial fluid flow through the flow hole is blocked and flow through the lateral fluid flow port is allowed.
    [0002]
    2. Valve according to claim 1, characterized in that it additionally comprises an upper ball seat which is operable in association with the piston sleeve (38), the upper ball seat being adapted to capture and release a small actuation sphere (76), a medium size actuation sphere (78), or a large actuation sphere (80).
    [0003]
    3. Valve according to claim 2, characterized in that it is moved from the initial operating position to the lateral flow operating position, resting a small (76) or medium-sized actuating ball on the ball seat upper to move the piston sleeve (38) from a position where it blocks fluid flow through the side fluid flow port to a position where it does not block fluid flow through the side fluid flow port.
    [0004]
    4. Valve according to claim 1, characterized in that it further comprises a lower ball seat located within the flow hole below the piston sleeve (38), wherein the lower ball seat is adapted to: capture and releasing a large scope (80) or a medium sized scope (78); and allow it to pass a small sphere of action (76).
    [0005]
    5. Valve according to claim 4, characterized in that the lower ball seat is located inside a ball sub catcher, the ball sub catcher having a retaining chamber to receive an actuation ball and keep the actuating ball out of the axial flow hole (14).
    [0006]
    6. Valve according to claim 2, characterized in that it is moved from the lateral or alternating flow operating position back to the initial operating position, resting a large actuation ball (80) on the ball seat upper to move the piston sleeve (38) from a position where it does not block fluid flow through the side fluid flow port to a position where it blocks fluid flow through the side fluid flow port.
    [0007]
    7. Valve according to claim 2, characterized in that it is moved to the alternate operating position, with a medium-sized actuating ball (78) resting on the lower ball seat to block the axial fluid flow through the valve.
    [0008]
    8. Valve characterized by comprising: a housing (12) defining an axial flow hole (14) along its length; a lateral fluid flow port disposed through the housing (12) that provides fluid communication between the flow hole and an area radially surrounding the housing (12); a piston sleeve (38) disposed within the flow hole and movable to selectively block fluid flow through the side flow port; wherein the valve is movable between: a) an initial operating position where fluid flow through the flow hole is allowed and flow through the lateral fluid flow port is blocked and any one of: b) a position a lateral flow operation in which axial fluid flow through the flow hole is allowed and flow through the lateral fluid flow port is allowed; c) an alternate operating position in which axial fluid flow through the flow hole is blocked and flow through the lateral fluid flow port is allowed; and an upper ball seat adapted to capture and release a small actuating ball (76), a medium sized actuating ball (78), or a large actuating ball (80).
    [0009]
    9. Valve according to claim 8, characterized in that it further comprises: a lower ball seat adapted to capture and release a large actuation ball (80) or a medium size actuation ball (78) and allow a small sphere of actuation (76) to pass without being captured.
    [0010]
    10. Valve according to claim 9, characterized in that it is moved from the initial operating position to the alternate operating position: the medium size actuating ball (78) resting on the upper ball seat to move the piston sleeve (38) from a position where it does not block fluid flow through the side fluid flow port to a position where it blocks fluid flow through the side fluid flow port; and then resting the medium size actuating ball (78) on the lower ball seat to block axial fluid flow through the axial flow hole (14).
    [0011]
    11. Valve according to claim 8, characterized in that it is moved from the initial operating position to the lateral flow operating position, resting a small actuation ball (76) on the upper ball seat to displace the piston sleeve (38) from a position where it blocks fluid flow through the side fluid flow port to a position where it does not block fluid flow through the side fluid flow port.
    [0012]
    12. Valve according to claim 9, characterized in that the lower ball seat is located inside a sub ball catcher, the sub ball catcher having a retaining chamber to receive an actuation ball and keep said actuating ball out of the axial flow hole (14).
    [0013]
    13. Valve according to claim 8, characterized in that it is moved from the lateral or alternating flow operating position back to the initial operating position, resting a large actuation ball (80) on the ball seat upper to move the piston sleeve (38) from a position where it does not block fluid flow through the side fluid flow port to a position where it blocks fluid flow through the side fluid flow port.
    [0014]
    14. Method of operating a valve (10) having a housing (12) defining an axial flow bore (14) along its length, a lateral fluid flow port disposed through the housing (12), and a piston sleeve (38) disposed within the flow hole and which is movable to selectively block fluid flow through the side flow port, characterized by the steps of: flowing fluid through the flow hole; move the valve from an initial operating position where fluid flow through the flow hole is allowed and flow through the lateral fluid flow port is blocked for each of a) the lateral flow operating position where axial fluid flow through the flow hole is allowed and flow through the lateral fluid flow port is allowed, or b) an alternate operating position where axial fluid flow through the flow hole is blocked and flow through the side fluid flow port is allowed; and moving the valve back to the initial operating position.
    [0015]
    15. Method according to claim 14, characterized in that the step of moving the valve from the initial operating position to the lateral flow operating position comprises arranging a first ball of action in the flow hole.
    [0016]
    16. Method according to claim 15, characterized in that the step of moving the valve from the initial operating position to the alternate operating position comprises arranging an actuation ball in the flow hole having a diameter that is greater than that of the first sphere of action.
    [0017]
    17. Method according to claim 15, characterized in that the step of moving the valve back to the initial operating position further comprises arranging a large actuation ball (80) in the flow hole, wherein the ball of large actuation (80) has a diameter that is larger than that of the first actuation sphere.
    [0018]
    18. Method according to claim 17, characterized in that the step of moving the valve back to the initial operating position further comprises moving at least one actuating ball of the flow hole in a holding chamber that is located radially out of the flow hole.
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    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-02-27| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-27| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/09/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/644,071|US9045966B2|2010-06-29|2012-10-03|Multi-cycle ball activated circulation tool with flow blocking capability|
    US13/644,071|2012-10-03|
    PCT/US2013/057943|WO2014055192A1|2012-10-03|2013-09-04|Multi-cycle ball activated circulation tool with flow blocking capability|
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