• 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:
    PRESSURE EQUALIZING APPARATUS A pressure equalizing apparatus may include longitudinally separated holes, which form a continuous flow path, the flow path alternating direction between the holes, and the holes are interconnected at opposite ends. A well system includes a well tool including a chamber containing a set of dielectric fluid, and a pressure equalizing apparatus including a flow path having one end connected to the chamber and the other end connected to a source of other fluid, the flow path extending in opposite directions between the ends of the flow path through multiple separate tubes. One method of installing a well tool may include attaching a mandrel to the well tool, then lowering the well tool, at least partially, into the well suspended from the mandrel, and then attaching the pressure equalizing apparatus to the chuck, a flow path of the apparatus being connected to a well tool chamber containing an assembly.
    公开号:BR112013025879B1
    申请号:R112013025879-9
    申请日:2012-03-27
    公开日:2021-05-04
    发明作者:Jimmie R. Williamson Jr.；James D. Vick Jr
    申请人:Halliburton Energy Services, Inc；
    IPC主号:
    专利说明:

    technical field
    [0001] The present invention generally relates to equipment used for operations carried out in conjunction with an underground well, and, in an example described below, more particularly provides a pressure equalization apparatus, and associated systems and methods. Invention history
    [0002] In some circumstances, it is desirable to isolate part of a well tool from the surrounding well environment, but without creating a pressure differential between the surrounding environment and the isolated part of the well tool. Thus, both fluid isolation and pressure equalization are necessary under these circumstances. It should be appreciated that there is a continuing need to introduce improvements in the art of constructing pressure equalizing devices for use with downhole tools. Invention Summary
    [0003] In the description below, a pressure equalizing apparatus is provided, which provides improvements in the technique. An example will be described below, in which multiple separate holes are combined to form a continuous flow path. Another example will be described below, in which holes are formed through respective separate tubes.
    [0004] In one aspect, the pressure equalizing apparatus, described below, is intended for use with a well tool in an underground well. The apparatus may include multiple separate holes, which extend longitudinally, and form a continuous flow path, which path alternates direction between the holes, and the holes are interconnected at opposite ends.
    [0005] In another aspect, a well system, described below, may include a tool including a chamber, containing an assembly in first dielectric fluid. The pressure equalization apparatus in the well system includes a flow path having opposite ends, one end being connected to the chamber and the other end being connected to a source of a second fluid, the flow path extending in directions opposite ends alternated between opposite ends by multiple separate holes.
    [0006] In yet another aspect, a method for installing a well tool in a well may include affixing a chuck to a well tool, then lowering the well tool at least partially into the well, suspended from the chuck, and then attach the pressure equalization apparatus to the mandrel, the apparatus flow path being connected to a well tool chamber containing an assembly.
    [0007] These and other aspects, advantages, and benefits of the present invention will be apparent to those skilled in the art, through a careful examination of the detailed description of representative examples shown below, and accompanying drawings, where similar elements are indicated throughout the various figures. with the same reference numbers. Brief description of drawings
    [0008] Figure 1 is a partially representative cross-sectional view of a well system and associated method that may incorporate the principles of the invention;
    [0009] Figure 2 is a representative illustration of the pressure equalization apparatus and well tool that can be used in well methods and systems;
    [0010] Figure 3A-3C are representative cross-sectional views of a pressure equalizing apparatus that can incorporate the principles of the present invention;
    [0011] Figure 4 is a representative cross-sectional view of the pressure equalizing apparatus, taken along line 4-4 of Figure 3B;
    [0012] Figure 5 is a representative cross-sectional view of the pressure equalization apparatus taken along line 5-5 of Figure 3C;
    [0013] Figures 6A and 6B are representative cross-sectional views of another configuration of the pressure equalization apparatus;
    [0014] Figure 7 is a representative cross-sectional view of the pressure equalization apparatus taken along line 7-7 of Figure 6B;
    [0015] Figure 8 is a representative end view of another configuration of the pressure equalization apparatus;
    [0016] Figures 9A and 9B are representative cross-sectional views of the pressure equalization apparatus, taken along line 9-9 of figure 8;
    [0017] Figures 10A and 10B are elevation views, representative of the pressure equalization apparatus of figure 8; and
    [0018] Figures 11A and 11B are elevation views, representative of the pressure equalization apparatus of figure 8, and cross section of the mandrel. Detailed Description
    [0019] Representatively illustrated in Figure 1, the well system 10 and associated method embody the principles of the present invention. As depicted in Figure 1, the tubular string 12 is positioned in a wellbore 14. A well tool 16 is interconnected with the tubular string 12.
    [0020] The well tool 16 can be any type of well tool, such as a flow control device (eg production valve, safety valve, throttle, injection control valve, etc.), sensor, device telemetry, etc., or any combination of tools. Representatively, in this example, well tool 16 is a safety valve, which selectively permits or prevents flow through a longitudinal flow passage 18 of tubular column 12 (eg using a closure device 17, such as a flap or ball, to close the flow passage).
    [0021] A chamber is positioned in the well tool 16. It is desirable that the well system 10 maintain an equal pressure between the chamber 20 and the flow passage 18 or annular space 22, formed radially between the tubular column 12 and the hole of well 14. For this purpose, a pressure equalizing apparatus 24 is interconnected between the chamber 20 and the passage 18 or annular space 22.
    [0022] Apparatus 24 is used to equalize pressure, and prevent fluid in passage 18 or annular space 22 from entering chamber 20. For example, chamber 20 may contain equipment, which may be damaged or rendered inoperable by fluid in passage 18 or annular space 22, etc.
    [0023] Referring now in addition to Figure 2, an enlarged-scale schematic view of the well tool 16 and pressure equalizing apparatus 24 is representatively illustrated separate from the rest of the well system 10. In this view it can be seen that the chamber 20 contains a fluid 26, which almost completely fills the flow path 30 in the tube 32 of the apparatus 24. Another fluid 28 is introduced from a fluid source (such as passage 18 or annular space 22 etc.).
    [0024] One end 34 of the flow path is connected to the chamber 20, and an opposite end 36 of the flow path is connected to the fluid source 28. Between the ends 34 and 36 of the flow path 30, the flow path if extends alternately up and down.
    [0025] In this example, an electrical assembly 38 (eg including electronic circuit 40 and electric motor 42, for example, to operate the closing device 17) is installed in chamber 20, and the fluid is a dielectric fluid used to isolate the assembly and provide heat transfer, while allowing transmit pressure to avoid a high pressure differential across the chamber walls. Fluid 28, in contrast, can be a well fluid, which is corrosive and/or conductive, and which could damage assembly 38, or at least render it inoperable.
    A mechanical assembly 43 (such as shaft 45, pistons, magnets, springs, etc.) is also (or alternatively) protected in chamber 20 of fluid 28. If only mechanical assembly 43 is in chamber 20, then the fluid 26 is not necessarily a dielectric fluid, but preferably at least a clean fluid, to prevent the mechanical assembly 43 from being damaged, frayed, glued, etc.
    [0027] It should be noted that the apparatus 24 allows pressure to be transmitted through the flow path 30, but prevents fluid 28 from migrating to the end 34 of the flow path and to the chamber 20. Because of the upward ripples and down the flow path 30 between opposite ends 34, 36, fluid 28 must alternately flow up and down many times to migrate from end 36 to end 34.
    [0028] However, as the fluids 26, 28 preferably have different densities, only one such up and down flows of fluid 28 is to be expected, as a consequence of the different fluid densities and force of gravity acting on the fluid. Fluid 28 may flow somewhat further along the flow path 30, due to pressure transmission from the fluid source (eg flow passage 18 or annular space 22) to chamber 20, but an interface 44 between the fluids 26, 28 remain in the tube between opposite ends 34, 36.
    [0029] The flow path 30 can provide a duct to extend a line (such as a power line or fiber optic line) to the chamber 20. This aspect eliminates the need for additional penetration into the wall of the chamber 20, for example , to provide electrical power and/or data communication for the set 38.
    [0030] Referring now further to Figures 3A-3C, where more detailed cross-sectional views of an example of pressure equalizing apparatus 24 are representatively illustrated. Similar to other configurations of pressure equalization apparatus described herein and shown in the drawings, the example shown in Figures 3A-3C can be used in the well system 10 of Figure 1 or in other well systems. Therefore, it should be clearly understood that the principles of the present invention are in no way limited to any of the details of well system 10 described above or depicted in the drawings.
    [0031] The configuration of the pressure equalizing apparatus 24 of Figures 3A-3C includes multiple holes 44, formed longitudinally through a generally tubular structure 46. As shown in the enlarged scale cross-sectional view of Figure 4, the holes 44 are circumferentially spaced apart in frame 46.
    [0032] End caps 48, 50 at opposite ends of the frame are connected to holes 44 by connectors 52. End caps 48, 50 have passages 54 connecting adjacent pairs of holes.
    [0033] The passages 54 connect adjacent pairs of holes 44 alternating between the end caps 48, 50 so that the flow path 30 extends in opposite directions, back and forth, through the holes in succession. The flow path 30 reverses direction in the passages 54 of the end caps 48, 50.
    [0034] A filter 56 is positioned in hole 44, which is connected to end of flow path 36. Fluid 28 enters end 36 and is filtered into filter 56. Holes 44 are preferably filled with fluid 26, before the apparatus 24 is installed in wellbore 14, and thus fluid 28 is expected not to migrate too far along flow path 30, and not transverse more than one of the flow path direction reversals in the flow caps. end 48, 50.
    [0035] The holes 44 of relatively large diameter provide a substantial volume of fluid 26, and provide an almost instantaneous pressure equalization of the pressure between the chamber 20 and the source of fluid 28. Especially in situations where one or more walls of the chamber 20 cannot withstand more significant pressure differentials this condition of immediately equalizing the pressure across the chamber walls can be vital to the successful operation of the well tool 16.
    [0036] In Figure 3C it can be seen that a rupture disk 58 is installed in the lower end cap 50, aligned with the lower end of the hole 44, in which the filter 56 is positioned. Rupture disk 58 allows fluid communication to be established with flow path 30, even if filter 56 or end 36 of the flow path has been plugged.
    [0037] If the end 36 of the flow path 30 is connected to the annular space 22, then the chamber 20 is pressure equalized with the annular space. However, if filter 56 is plugged in, pressure equalization is impaired. By opening the rupture disk 58 (e.g. increasing the pressure in the annular space 22 until it ruptures the rupture disk), communication between the flow path 30 and the annular space is re-established.
    [0038] In Figure 5 it can be seen that the end 34 of the flow path 30 ends in the lower end cap 50. The end 34 is connected in the end cap 30 to the last hole 44 in the sequence of holes, which starts with the hole connected to end 36, and then advancing clockwise as in figure 4.
    [0039] A longitudinal recess formed between the first hole and the last hole 44, thereafter provides a space for the lines 62 to extend longitudinally along the apparatus 24. The lines 62 can be, for example, electrical, hydraulic, optical lines , and other types of lines, and can be used to control operation and/or supply electrical power to well tool 16 (eg connecting to electrical assembly 38).
    [0040] Frame 46 and covers 48, 50 are supported and secured to a generally tubular mandrel 64. Mandrel 64 may be provided with threads at opposite ends to interconnect apparatus 24 to tubular column 12. In another configuration, described below, the mandrel 64 can also be used to drive the well tool 16 into the upper end of the well hole 14.
    [0041] Referring now further to Figures 6A and 6B, opposite ends of another configuration of pressure equalizing apparatus are representatively illustrated. The configuration of figures 6A-6B is similar in many respects to the configuration of figures 3A-5, but differing at least in that instead of forming holes 44 in the frame 46, the holes in the configuration of figures 6A and 6B are formed into tubes. separated 66.
    [0042] The way in which the tubes are circumferentially distributed around the mandrel 64 can be seen in Figure 7. It should be noted that the holes are arranged circumferentially spaced, as in the configuration shown in Figure 4.
    [0043] The configuration of the apparatus 24 of Figures 6A and 6B functions similarly to that of the configuration 3A-3C where the flow path 30 extends in alternate opposite directions through the holes 44 and reverses the direction in the end caps 48, 50 at the opposite ends of the tubes 66.
    [0044] Referring now in addition to Figures 8-11B, yet another configuration of pressure equalizing apparatus 24 is representatively illustrated. The configuration of figures 8-11B is similar in many respects to the configuration of figures 6A-7, but differs in that the end caps 48, 50, tubes 66, and connectors 53 do not extend completely circumferentially around the mandrel 63 .
    [0045] As shown in Figure 8 (end view of apparatus 24), the end cap 48 has a semi-circular shape. The other end cap 50, in this example, has the same semi-circular shape, and the tubes 66 and connectors 52 are only partially circumferentially distributed around the mandrel 64 when the apparatus is fully assembled.
    [0046] In figures 9A-9B, cross-sectional views at opposite ends of the apparatus 24 are illustrated representatively, where it can be seen that the construction of the configuration of figures 8-11B is similar to the construction of the configuration of figures 6A-7. However, end caps 48, 50 are designed to accept fasteners that are used to fasten to mandrel 64.
    [0047] In Figures 10A-10B, the end caps 48, 50, tubes 66, and connectors 52 are shown in side views, where it can be seen that the retainers 68 are attached to the end caps 48, 50, so that the end caps, along with the tubes 66 and connectors 52, are affixed to the mandrel 64 as a unit.
    [0048] In Figures 11A-11B, end caps 48, 50 tubes 66 and connectors 52 are shown as being affixed to an outer side of mandrel 64. In this way, mandrel 64 can be used to handle lifting equipment, suspend, and drive the well tool 16 into the well.
    [0049] Preferably, the chuck 64 could be connected to the well tool 16 (eg by threading the lower end of the chuck into the upper end of the well tool), and the chuck could be used to lift the well tool onto the platform deck, above the wellbore 14, and the mandrel would then be used to lower the tool 16, at least partially, into the wellbore.
    [0050] The pressure equalizing apparatus 24 can then be affixed to the mandrel 64, and the end 36 of the flow path 30 connected to the chamber 20 of the well tool 16.
    The retainers 68 could remain in the apparatus 24 when installed in the well, or they could be removed after the apparatus has been attached to the mandrel 64.
    [0052] It can now be fully appreciated that the above description provides important improvements to the technique of building pressure equalizer systems for wells. The pressure equalizing apparatus 34, described above, quickly equalizes the pressure between chamber 20 and fluid source 28, thereby minimizing the pressure differential, and providing a large volume of fluid 26, while preventing fluid 26 from migrating to the chamber.
    [0053] The above description describes a well system 10 including a well tool 16 with a chamber 20 having assembly 38, 43 in a first dielectric fluid 26. A pressure equalizing apparatus 24 includes a flow path 30 having a first and opposite second ends 34, 36, with the first end 34 being connected to the chamber 20, and the second end 36 being connected to a source of a second fluid 28, and the flow path 30 extending in alternating opposite directions between the first. end 34 and second end 36 by multiple spaced holes 44.
    [0054] Holes 44 may be formed in tubes 66. Holes 44 may be circumferentially spaced apart. The flow path 30 may alternately extend up and down in the respective holes 44. The holes 44 can be formed in the respective multiple tubes 66, which extend at least partially circumferentially around the mandrel 64. The tubes 64 may be affixed to mandrel 64, where mandrel 64 can be affixed to wellbore 16, and well tool 16 can comprise a safety valve.
    [0055] The second fluid source 28 could comprise an internal longitudinal passage of a tubular column, and/or an annular space between the tubular column and wellbore. The second fluid 28 may enter the second end 36 of the flow path 30, but be prevented from flowing to the first end 34 of the flow path 30. The density of the first fluid 26 may be different from the density of the second fluid 28. Adjacent pairs of 44 holes can communicate.
    [0056] The assembly may comprise an electrical assembly 38 and/or a mechanical assembly 43.
    [0057] The above description also describes a pressure equalizing apparatus 24 for use with a well tool 16 in an underground well. Apparatus 24 may include multiple separate, longitudinally extending holes 44 that form a continuous flow path 30, flow path 30 alternating direction between holes 44, and holes 44 being interconnected at their opposite ends.
    [0058] Apparatus 24 may include a filter 56 that filters the second fluid 28 and a rupture disk 58 exposed to the flow path 30, between the filter 56 and the first end 34 of the flow path 30.
    [0059] The method for installing well tool 16 in a well has been described above. The method may include affixing a mandrel to the mandrel tool 16, then lowering it, at least partially into the well, suspended by the mandrel 64, and then affixing a pressure equalizing apparatus 24 to the mandrel 62, with a flow path 30 of apparatus 24 is connected to chamber 20 of well tool 16 containing assembly 38, 43.
    [0060] The method may include increasing pressure in the well, thereby opening holes 44, for communication with the source of second fluid 28.
    [0061] It should be understood that the various examples described above can be used in various orientations, such as tilted, inverted, horizontal, vertical, etc., and in various configurations, without departing from the principles of the present invention. The configurations illustrated in the drawings have been represented and described merely as exemplary of useful applications of the principles of the present invention, which are not limited to any details of these configurations.
    [0062] In the above description of the representative examples of the invention, directional terms such as above to lower upper lower etc. are used merely for convenience with reference to the accompanying drawings.
    [0063] Certainly those skilled in the art, through careful examination of the above description of representative configurations, will readily appreciate that many modifications, additions, substitutions, deletions, and other changes are contained within the scope of the spirit of the present invention. Therefore, the above detailed description is to be clearly understood to be provided by way of illustration and example only, and that the spirit and scope of the present invention will be limited only by the appended claims and their equivalents.
    权利要求:
    Claims (29)
    [0001]
    1. Pressure equalizing apparatus, for use with a well tool (16) in an underground well, said apparatus (24) characterized in that it comprises: - multiple, longitudinally extending, separate holes (44); multiple holes comprise at least first and second holes extending longitudinally; and - at least one end cap (48) which connects one end of the first hole (44) to an adjacent end (50) of the second hole (44), thus forming a continuous flow path (30), the path of flow (30) alternates direction between the first and second holes, the flow path (30) preventing fluid migration through the flow path (30) while allowing pressure communication across the flow path (30) .
    [0002]
    2. Apparatus according to claim 1, characterized in that a first fluid (26) is at a first end (34) of the flow path (30), and the second fluid (28) at an opposite second end ( 36) of the flow path (30).
    [0003]
    3. Apparatus according to claim 2, characterized in that the second fluid (28) enters the second end (36) of the flow path (30), but is prevented from flowing to the first end (34) of the path flow (30).
    [0004]
    4. Apparatus according to claim 3, characterized in that it additionally comprises a filter (56) that filters the second fluid (28), and a rupture disk (58) exposed to the flow path (30) between the filter (56) and the first end (34) of the flow path (30).
    [0005]
    5. Apparatus according to claim 2, characterized in that the density of the first fluid (26) is different from the density of the second fluid (28).
    [0006]
    6. Apparatus according to claim 2, characterized in that a source of the second fluid (28) comprises at least one of an internal longitudinal passage of a tubular column and an annular space between the tubular column (12) and a hole of well.
    [0007]
    7. Apparatus according to claim 1, characterized in that the holes (44) are formed in the tubes (66).
    [0008]
    8. Apparatus according to claim 1, characterized in that the holes (44) are formed separately.
    [0009]
    9. Apparatus according to claim 1, characterized in that the flow path (30) extends alternately up and down in the respective successive holes (44).
    [0010]
    10. Apparatus according to claim 1, characterized in that the holes (44) are formed through multiple tubes (16), which extend at least partially circumferentially around a mandrel (64).
    [0011]
    11. Apparatus according to claim 10, characterized in that the tubes (16) are fixed to the mandrel (64) and the mandrel is fixed to the well tool (16).
    [0012]
    12. Apparatus according to claim 1, characterized in that the well tool (16) comprises a safety valve.
    [0013]
    13. Apparatus according to claim 1, characterized in that adjacent pairs of holes (44) communicate with each other.
    [0014]
    14. Apparatus according to claim 1, characterized in that the flow path (30) comprises a duct, and a line extending through the duct in a chamber (20) of the well tool (16).
    [0015]
    15. Well system, characterized in that it comprises: - a well tool (16) including a chamber (20) containing therein an assembly (38) in a first dielectric fluid (26); and - a pressure equalizing apparatus (24) including a flow path (30) having first (34) and second (36) opposite ends, the first end (34) being connected to the chamber (20) and the second end ( 36) connected to a source of second fluid (28), the flow path (30) extending in alternating opposite directions between the first (34) and second (36) ends, through multiple separate holes (44).
    [0016]
    16. System according to claim 15, characterized in that the holes (44) are formed in tubes (66).
    [0017]
    17. System according to claim 15, characterized in that the holes (44) are circumferentially separated.
    [0018]
    18. System according to claim 15, characterized in that the flow path (30) extends alternately downwards and upwards in the respective successive holes (44).
    [0019]
    19. System according to claim 15, characterized in that the holes (44) are formed through respective multiple tubes (66), which extend, at least partially, circumferentially around a mandrel (64).
    [0020]
    20. System according to claim 19, characterized in that the tubes (66) are fixed to the mandrel (64), and the mandrel is fixed to the well tool (16).
    [0021]
    21. System according to claim 15, characterized in that the second fluid source (28) comprises at least one internal longitudinal passageway of a tubular column and annular space between the tubular column (12) and the well hole .
    [0022]
    22. System according to claim 15, characterized in that the second fluid (28) enters the second end (36) of the flow path (30), but is prevented from flowing to the first end (34) of the path flow (30).
    [0023]
    23. System according to claim 15, characterized in that the well tool (16) comprises a safety valve.
    [0024]
    24. System according to claim 15, characterized in that the density of the first fluid (26) is different from the density of the second fluid (28).
    [0025]
    25. System according to claim 15, characterized in that adjacent pairs of holes (44) communicate with each other.
    [0026]
    26. System according to claim 15, characterized in that the set comprises an electrical set (38).
    [0027]
    27. System according to claim 15, characterized in that the assembly comprises a mechanical assembly (43).
    [0028]
    28. System according to claim 15, characterized in that the flow path (30) includes a duct, and a line extending through the duct in a chamber (20) of the well tool (16).
    [0029]
    29. System according to claim 15, characterized in that the flow path (30) passes through at least one tube (66) within at least one of the holes (44)
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013025879B1|2021-05-04|pressure equalization apparatus and well system
    BRPI0414986B1|2021-02-23|system and method for making fiber optic connections in an underground well
    BR112013030903B1|2021-01-19|WELL HOLE JOINT ASSEMBLY
    US10344570B2|2019-07-09|Completion deflector for intelligent completion of well
    CA2912956A1|2015-01-15|Downhole electrical connector
    BRPI0900717A2|2010-01-19|system and method for selectively communicable hydraulic nipples
    BR102012023893A2|2013-11-12|METHOD, AND SYSTEM
    WO2015106351A1|2015-07-23|Modular sealing elements for a bearing assembly
    BR112015016076B1|2018-02-06|THREADED CONNECTOR AND METHOD FOR MANUFACTURING THREADED CONNECTOR FOR LARGER DIAMETER TUBULAR ELEMENTS
    US8672024B2|2014-03-18|Subsurface well completion system having a heat exchanger
    EP2602424B1|2019-10-02|Selective Set Module for Multi String Packers
    BR122020001594B1|2021-10-13|METHOD FOR INSTALLING A WELL TOOL IN A WELL
    BR112019013413A2|2020-03-03|PUMP SYSTEM FOR A WELL HOLE, AND METHOD FOR PUMPING FLUID FROM A WELL HOLE.
    US20110061934A1|2011-03-17|Vibration Damping Tool for Downhole Electronics
    US20110162839A1|2011-07-07|Retrofit wellbore fluid injection system
    CA2965470C|2017-09-12|Axial retention connection for a downhole tool
    BR112013030610B1|2021-05-25|modular control system for downhole tool
    BR112017001806B1|2021-12-07|COMPLETION DEFLECTOR ASSEMBLY FOR USE WITH A WELL HAVING AT LEAST ONE SIDE BRANCH, WELL SYSTEM FOR USE WITHIN A WELL HAVING A MAIN EXPLORATION WELL AND A SIDE EXPLORATION WELL AND METHOD FOR INSTALLING A COMPLETION SYSTEM IN A WELL WITH A MAIN WELL AND A SIDE WELL
    BR112016028863B1|2021-11-23|JOINT FITTING, WELL SYSTEM, E, METHOD TO COMPLETE A WELL.
    US10900315B2|2021-01-26|Tubing hanger system
    US20160108692A1|2016-04-21|Downhole tool with retrievable electronics
    BR112015027645B1|2021-10-26|LARGE WIDTH/DIAMETER RISE COLUMN SEGMENT THAT CAN BE LOWERED THROUGH A ROTARY DRILLING PLATFORM
    BR112019011736A2|2019-11-05|high pressure riser, and composition method and tool for mounting a high pressure riser
    BR112014018381B1|2021-12-07|SYSTEM AND METHOD FOR SUPPLYING COUPLER PORTIONS ALONG A STRUCTURE
    同族专利:
    公开号 | 公开日
    WO2012141881A3|2013-03-14|
    MY174503A|2020-04-23|
    US10107050B2|2018-10-23|
    SA112330440B1|2015-09-20|
    WO2012141753A1|2012-10-18|
    RU2562640C2|2015-09-10|
    RU2013150251A|2015-05-20|
    BR112013025993B1|2020-06-16|
    EP2697474A2|2014-02-19|
    US20120261139A1|2012-10-18|
    EP2697479A4|2016-01-20|
    EP2697474A4|2016-01-13|
    BR112013025993A2|2016-12-27|
    US9016387B2|2015-04-28|
    WO2012141881A8|2013-11-14|
    WO2012141753A4|2013-01-10|
    MY160763A|2017-03-15|
    US11078730B2|2021-08-03|
    WO2012141881A2|2012-10-18|
    US20150233191A1|2015-08-20|
    US20190032426A1|2019-01-31|
    EP2697479A1|2014-02-19|
    RU2567259C2|2015-11-10|
    SA112330439B1|2015-10-11|
    RU2013148467A|2015-05-20|
    BR112013025879A2|2017-11-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2556435A|1950-04-27|1951-06-12|Layne & Bowler Inc|Means for cooling lubricating oil in submerged motors|
    US3980369A|1975-12-15|1976-09-14|International Telephone And Telegraph Corporation|Submersible pump interconnection assembly|
    US4537457A|1983-04-28|1985-08-27|Exxon Production Research Co.|Connector for providing electrical continuity across a threaded connection|
    US4598773A|1984-03-12|1986-07-08|Camco, Incorporated|Fail-safe well safety valve and method|
    US4700272A|1986-06-26|1987-10-13|Digital Equipment Corporation|Apparatus and method for compensation of thermal expansion of cooling fluid in enclosed electronic packages|
    US5320182A|1989-04-28|1994-06-14|Baker Hughes Incorporated|Downhole pump|
    US4976317A|1989-07-31|1990-12-11|Camco International Inc.|Well tool hydrostatic release means|
    US5038865A|1989-12-29|1991-08-13|Cooper Industries, Inc.|Method of and apparatus for protecting downhole equipment|
    US5058682A|1990-08-29|1991-10-22|Camco International Inc.|Equalizing means for a subsurface well safety valve|
    RU2046939C1|1991-12-11|1995-10-27|Научно-производственная фирма "Геофизика"|Mounted on string automatic adapter to formation tester|
    US5310004A|1993-01-13|1994-05-10|Camco International Inc.|Fail safe gas bias safety valve|
    US5706892A|1995-02-09|1998-01-13|Baker Hughes Incorporated|Downhole tools for production well control|
    GB2348029B|1995-10-20|2001-01-03|Baker Hughes Inc|Communication in a wellbore utilizing acoustic signals|
    US5795135A|1995-12-05|1998-08-18|Westinghouse Electric Corp.|Sub-sea pumping system and an associated method including pressure compensating arrangement for cooling and lubricating fluid|
    US6059539A|1995-12-05|2000-05-09|Westinghouse Government Services Company Llc|Sub-sea pumping system and associated method including pressure compensating arrangement for cooling and lubricating|
    GB2316113B|1996-02-15|2000-08-16|Baker Hughes Inc|Actuator for a downhole tool|
    US6041857A|1997-02-14|2000-03-28|Baker Hughes Incorporated|Motor drive actuator for downhole flow control devices|
    GB2320731B|1996-04-01|2000-10-25|Baker Hughes Inc|Downhole flow control devices|
    FR2759113B1|1997-01-31|1999-03-19|Elf Aquitaine|PUMPING SYSTEM FOR A LIQUID / GAS BIPHASIC EFFLUENT|
    DE19715278C2|1997-04-12|1999-04-01|Franz Morat Kg Elektro Feinmec|Gear unit|
    US6012518A|1997-06-06|2000-01-11|Camco International Inc.|Electro-hydraulic well tool actuator|
    US6179055B1|1997-09-05|2001-01-30|Schlumberger Technology Corporation|Conveying a tool along a non-vertical well|
    US5918688A|1997-10-09|1999-07-06|Dailey International, Inc.|Gas-filled accelerator|
    US5947206A|1997-11-25|1999-09-07|Camco International Inc.|Deep-set annulus vent valve|
    US6250387B1|1998-03-25|2001-06-26|Sps-Afos Group Limited|Apparatus for catching debris in a well-bore|
    US6269874B1|1998-05-05|2001-08-07|Baker Hughes Incorporated|Electro-hydraulic surface controlled subsurface safety valve actuator|
    US6293346B1|1998-09-21|2001-09-25|Schlumberger Technology Corporation|Method and apparatus for relieving pressure|
    FR2790507B1|1999-03-05|2001-04-20|Schlumberger Services Petrol|BELLOWS DOWNHOLE ACTUATOR AND FLOW ADJUSTMENT DEVICE USING SUCH AN ACTUATOR|
    US6367545B1|1999-03-05|2002-04-09|Baker Hughes Incorporated|Electronically controlled electric wireline setting tool|
    EG22359A|1999-11-24|2002-12-31|Shell Int Research|Device for manipulating a tool in a well tubular|
    RU2190083C1|2001-01-09|2002-09-27|Нежельский Анатолий Анатольевич|Straightway valve-shutoff device|
    US6602059B1|2001-01-26|2003-08-05|Wood Group Esp, Inc.|Electric submersible pump assembly with tube seal section|
    US6619388B2|2001-02-15|2003-09-16|Halliburton Energy Services, Inc.|Fail safe surface controlled subsurface safety valve for use in a well|
    US6688860B2|2001-06-18|2004-02-10|Schlumberger Technology Corporation|Protector for electrical submersible pumps|
    US6988556B2|2002-02-19|2006-01-24|Halliburton Energy Services, Inc.|Deep set safety valve|
    US7188674B2|2002-09-05|2007-03-13|Weatherford/Lamb, Inc.|Downhole milling machine and method of use|
    US6978842B2|2002-09-13|2005-12-27|Schlumberger Technology Corporation|Volume compensated shifting tool|
    CA2499251A1|2002-09-18|2004-04-01|Philip Head|Electric motors for powering downhole tools|
    GB0307237D0|2003-03-28|2003-04-30|Smith International|Wellbore annulus flushing valve|
    US7147054B2|2003-09-03|2006-12-12|Schlumberger Technology Corporation|Gravel packing a well|
    CA2902466C|2003-11-07|2016-06-21|Aps Technology, Inc.|A torsional bearing assembly for transmitting torque to a drill bit|
    US7963324B2|2004-12-03|2011-06-21|Schlumberger Technology Corporation|Flow control actuation|
    US7604049B2|2005-12-16|2009-10-20|Schlumberger Technology Corporation|Polymeric composites, oilfield elements comprising same, and methods of using same in oilfield applications|
    US7635029B2|2006-05-11|2009-12-22|Schlumberger Technology Corporation|Downhole electrical-to-hydraulic conversion module for well completions|
    DK2038511T3|2006-06-12|2016-11-14|Welldynamics Inc|Pressure equalizing electrical borehole connections|
    US7640989B2|2006-08-31|2010-01-05|Halliburton Energy Services, Inc.|Electrically operated well tools|
    US7694742B2|2006-09-18|2010-04-13|Baker Hughes Incorporated|Downhole hydraulic control system with failsafe features|
    US7591317B2|2006-11-09|2009-09-22|Baker Hughes Incorporated|Tubing pressure insensitive control system|
    US7828056B2|2007-07-06|2010-11-09|Schlumberger Technology Corporation|Method and apparatus for connecting shunt tubes to sand screen assemblies|
    US7673705B2|2008-06-06|2010-03-09|The Gearhart Companies, Inc.|Compartmentalized MWD tool with isolated pressure compensator|
    US8567506B2|2008-09-04|2013-10-29|Halliburton Energy Services, Inc.|Fluid isolating pressure equalization in subterranean well tools|
    US8051706B2|2008-12-12|2011-11-08|Baker Hughes Incorporated|Wide liquid temperature range fluids for pressure balancing in logging tools|
    WO2011005988A1|2009-07-10|2011-01-13|Schlumberger Canada Limited|Apparatus and methods for inserting and removing tracer materials in downhole screens|
    US8727040B2|2010-10-29|2014-05-20|Hydril USA Distribution LLC|Drill string valve and method|
    US9010448B2|2011-04-12|2015-04-21|Halliburton Energy Services, Inc.|Safety valve with electrical actuator and tubing pressure balancing|
    US9016387B2|2011-04-12|2015-04-28|Halliburton Energy Services, Inc.|Pressure equalization apparatus and associated systems and methods|US9016387B2|2011-04-12|2015-04-28|Halliburton Energy Services, Inc.|Pressure equalization apparatus and associated systems and methods|
    US9010448B2|2011-04-12|2015-04-21|Halliburton Energy Services, Inc.|Safety valve with electrical actuator and tubing pressure balancing|
    US9068425B2|2011-04-12|2015-06-30|Halliburton Energy Services, Inc.|Safety valve with electrical actuator and tubing pressure balancing|
    US8800689B2|2011-12-14|2014-08-12|Halliburton Energy Services, Inc.|Floating plug pressure equalization in oilfield drill bits|
    US9273549B2|2013-01-24|2016-03-01|Halliburton Energy Services, Inc.|Systems and methods for remote actuation of a downhole tool|
    US9650858B2|2013-02-26|2017-05-16|Halliburton Energy Services, Inc.|Resettable packer assembly and methods of using the same|
    EP3428564B1|2013-03-15|2020-05-27|Thar Energy LLC|Countercurrent heat exchanger/reactor|
    US9658362B2|2013-06-28|2017-05-23|Schlumberger Technology Corporation|Pressure equalized packaging for electronic sensors|
    GB2534551A|2015-01-16|2016-08-03|Xtreme Well Tech Ltd|Downhole actuator device, apparatus, setting tool and methods of use|
    US10539435B2|2017-05-17|2020-01-21|General Electric Company|Pressure compensated sensors|
    US11029177B2|2017-05-17|2021-06-08|Baker Hughes Holdings Llc|Pressure compensated sensors|
    GB2577438A|2017-07-18|2020-03-25|Halliburton Energy Services Inc|Control line pressure controlled safety valve equalization|
    RU177700U1|2017-10-27|2018-03-06|Общество с ограниченной ответственностью "Газпромнефть Научно-Технический Центр" |STRUCTURE VALVE|
    GB2587978A|2018-07-24|2021-04-14|Halliburton Energy Services Inc|Section-balanced electric safety valve|
    RU2751617C1|2020-07-27|2021-07-15|Акционерное общество "Новомет-Пермь"|Pipe safety valve|
    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-02-17| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-04| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/085,075|2011-04-12|
    US13/085,075|US9016387B2|2011-04-12|2011-04-12|Pressure equalization apparatus and associated systems and methods|
    PCT/US2012/030669|WO2012141881A2|2011-04-12|2012-03-27|Pressure equalization apparatus and associated systems and methods|
    [返回顶部]