Hydraulic VR plug delivering and taking tool

Abstract

The utility model discloses a hydraulic type VR plug delivering and taking tool which is used for delivering and taking a VR plug when a side wing valve of a wellhead device is maintained or replaced on line, the side wing valve comprises a shell, a first stop valve, a second stop valve, a third stop valve and a fourth stop valve and further comprises a plurality of sleeve structures which are coaxially arranged, the sleeve structures are all located in the shell, and the shell is provided with a plurality of through holes. The multiple sleeve structures stretch out and draw back to change the length when used, a rotating shaft is arranged at one end of the outermost sleeve structure, the rotating shaft and the sleeve structures are coaxial, the rotating shaft and the outermost sleeve structure are rotationally connected with the inner wall of a shell of the side wing valve, a piston rod is axially arranged in the innermost sleeve structure, and the piston rod is connected with the piston rod. And one end of the piston rod extends out of the innermost sleeve structure. The hydraulic VR plug delivering and taking tool is short in overall length, can be operated by one person, is suitable for various actual working conditions, and can improve working efficiency.

Description

Technical Field

[0001] The utility model relates to a hydraulic VR plugging, delivery and extraction tool, belonging to the technical field of oil and natural gas mining devices. Background Art

[0002] During the oil and gas extraction process, the wellhead device needs to be disassembled online and the wing valve at the side outlet needs to be replaced. At this time, a VR plug needs to be installed at the side outlet of the wing valve. After the wing valve is replaced, the VR plug can be removed. The wellhead device is generally installed in a limited space for multiple wells, which limits the delivery and retrieval tools and operators of the VR plug. However, the current VR plug delivery and retrieval tools are relatively long in overall length and complicated to operate. They are very limited by the operating space and cannot be adapted to a variety of actual working conditions. They even require the cooperation of multiple people to complete the delivery and retrieval. A new VR plug delivery and retrieval tool with a short overall length, easy operation, and adaptable to a variety of working conditions is now needed. Utility Model Content

[0003] The utility model aims to provide a hydraulic VR plugging, delivering and taking tool, which has a short overall length and can be operated by one person, is adaptable to a variety of actual working conditions, and can improve work efficiency.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a hydraulic VR plugging and removing tool, which is used to remove the VR plug when the flank valve of the wellhead device is online repaired or replaced. The flank valve includes a shell, a first stop valve, a second stop valve, a third stop valve and a fourth stop valve, including a plurality of coaxially arranged sleeve structures, the plurality of sleeve structures are all located in the shell, the plurality of sleeve structures are telescoped to change the length when in use, a rotating shaft is provided at one end of the outermost sleeve structure, the rotating shaft is coaxial with the sleeve structure, the rotating shaft and the outermost sleeve structure are respectively rotatably connected to the inner wall of the shell of the flank valve, a piston rod is axially arranged in the innermost sleeve structure, and one end of the piston rod extends out of the innermost sleeve structure.

[0005] Preferably, the multiple sleeve structures include an inner sleeve and an outer sleeve, the outer sleeve is sleeved outside the inner sleeve, the piston rod is located inside the inner sleeve, and one end of the piston rod extends out of the inner sleeve.

[0006] Preferably, the rotating shaft is connected to the outer sleeve via a transmission pin.

[0007] Preferably, the inner wall of the outer sleeve is provided with an axially extending groove, and the inner sleeve is provided with a transmission pin, and the upper end of the transmission pin is slidably disposed in the groove.

[0008] Preferably, a connecting sleeve is provided at the outer end of the piston rod, and the outer wall of one end of the VR plug is threadedly connected to the inner wall of the connecting sleeve.

[0009] Preferably, the outer sleeve is located inside the shell.

[0010] Preferably, a packing gland is provided on the outer side of the shell, the rotating shaft is located inside the packing gland, and a rotating steel ball is provided between the rotating shaft and the packing gland.

[0011] Preferably, a rotating steel ball is provided between the outer sleeve and the shell.

[0012] The beneficial effects of the utility model are as follows: the hydraulic VR plugging and delivery tool of the utility model has a short overall length and is easy to operate, has low requirements on operators, can be operated by one person, can adapt to a variety of on-site working conditions, can improve work efficiency, and has advantages in use at wellheads with smaller spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0014] Figure 1 and Figure 2 It is a structural schematic diagram of the utility model hydraulic VR blocking and delivering tool in different viewing directions;

[0015] Figure 3 yes Figure 2 AA section view in;

[0016] Figure 4 It is a cross-sectional view of the utility model hydraulic VR plugging and delivering tool in a stretched state. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiments of the utility model:

[0019] The utility model provides a hydraulic VR plugging and delivery tool, please refer to Figures 1 to 4, used for delivering and removing VR plug 14 when the flank valve of the wellhead device is repaired or replaced online, the flank valve includes a shell 1, a first stop valve 2, a second stop valve 3, a third stop valve 4 and a fourth stop valve 5, including a plurality of coaxially arranged sleeve structures 6, the plurality of sleeve structures 6 are all located in the shell 1, the plurality of sleeve structures 6 are telescoped to change the length when in use, a rotating shaft 7 is arranged at one end of the outermost sleeve structure 6, the rotating shaft 7 is coaxial with the sleeve structure, the rotating shaft 7 and the outermost sleeve structure are respectively rotatably connected to the inner wall of the shell of the flank valve, a piston rod 8 is axially arranged in the innermost sleeve structure, and one end of the piston rod 8 extends out of the innermost sleeve structure.

[0020] Preferably, the multiple sleeve structures 6 include an inner sleeve 9 and an outer sleeve 10 , the outer sleeve 10 is sleeved outside the inner sleeve 9 , the piston rod 8 is located inside the inner sleeve 9 , and one end of the piston rod 8 extends out of the inner sleeve 9 .

[0021] Preferably, the rotating shaft 7 and the outer sleeve 10 are connected via a transmission pin 11, or they may be connected via other means, so that when the rotating shaft 7 rotates, the outer sleeve 10 can be driven to rotate simultaneously.

[0022] Preferably, the inner wall of the outer sleeve 10 is provided with an axially extending groove 12, and the inner sleeve 9 is provided with a transmission pin 11, the upper end of the transmission pin 11 is slidably set in the groove 12, and the transmission pin 11 connects the outer sleeve 10 with the inner sleeve 9. When the outer sleeve 10 rotates, the inner sleeve 9 is rotated through the transmission pin 11, and then the piston rod 8 in the inner sleeve 9 also rotates.

[0023] Preferably, a connecting sleeve 13 is provided at the outer end of the piston rod 8 , and the outer wall of one end of the VR plug 14 is threadedly connected to the inner wall of the connecting sleeve 13 .

[0024] Preferably, the outer sleeve 10 is located inside the shell 1 .

[0025] Preferably, a packing gland 15 is provided on the outer side of the housing 1, the rotating shaft 7 is located inside the packing gland 15, and a rotating steel ball 16 is provided between the rotating shaft 7 and the packing gland 15, so that the rotating shaft 7 can rotate.

[0026] Preferably, a rotating steel ball 16 is provided between the outer sleeve 10 and the shell 1 , so that the outer sleeve 10 can rotate relative to the shell 1 .

[0027] The use method of the utility model hydraulic VR blocking and delivery tool:

[0028] Open the wing valve and observe the pressure gauge 17, close the third stop valve 4 and the fourth stop valve 5, open the first stop valve 2 and the second stop valve 3, balance the pressure in the well and inside the tool, and after the pressure is balanced, connect the hand pump at the third stop valve 4, open the third stop valve 4 and the first stop valve 2, close the second stop valve 3 and the fourth stop valve 5, and use the hand pump to pressurize the tool. At this time, the pressure in the tool is greater than the pressure in the well, and the piston rod 8 and the inner sleeve 9 in the tool begin to move forward and outward. At this time, observe the pressure gauge 17 and gradually pressurize. When the hand pump pressure gauge is stable, indicating that the tool has moved into place, rotate the shaft 7 to make the piston rod 8 and the connecting sleeve 13 are rotated, the connecting sleeve 13 is provided with an internal thread, the VR plug 14 is provided with an external thread, the connecting sleeve 13 and the VR plug 14 are threadedly connected, and the VR plug 14 is tightened. After the VR plug 14 is tightened, all the stop valves are closed, and after removing the hand pump, the second stop valve 3 and the fourth stop valve 5 are closed, and the first stop valve 2 and the third stop valve 4 are opened to release the pressure in the tool. By observing the pressure gauge 17, if there is enough pressure in the well, the piston rod 8 and the inner sleeve 9 of the tool will be pushed back. After the piston rod 8 and the inner sleeve 9 are pushed back, the valve is closed, and then the second stop valve 3 is opened to release the residual pressure. Observe the pressure gauge 17. If it is found that the pressure in the well cannot push the piston rod 8 and the inner sleeve 9 back, install a hand pump at the fourth stop valve 5. At this time, open the first stop valve 2, the third stop valve 4 and the fourth stop valve 5, and close the second stop valve 3. Use the hand pump to pump pressure into the well and observe the pressure gauge 17. If sufficient pressure is reached, the piston rod 8 and the inner sleeve 9 can be pushed back.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic VR plugging and removing tool, used for removing VR plugs when the wing valve of a wellhead device is repaired or replaced online, the wing valve includes a housing, a first stop valve, a second stop valve, a third stop valve and a fourth stop valve, including a plurality of coaxially arranged sleeve structures, characterized in that: The multiple sleeve structures are all located in the shell body, and the multiple sleeve structures are telescoped to change their lengths when in use. The multiple sleeve structures include an outermost sleeve structure and an innermost sleeve structure. A rotating shaft is provided at one end of the outermost sleeve structure, and the rotating shaft is coaxial with the sleeve structure. The rotating shaft and the outermost sleeve structure are respectively rotatably connected to the inner wall of the shell body of the wing valve, and a piston rod is axially provided in the innermost sleeve structure, and one end of the piston rod extends out of the innermost sleeve structure.

2. The hydraulic VR plugging and delivery tool according to claim 1 is characterized in that: The multiple sleeve structures include an inner sleeve and an outer sleeve, the outer sleeve is sleeved outside the inner sleeve, the piston rod is located inside the inner sleeve, and one end of the piston rod extends out of the inner sleeve.

3. The hydraulic VR blocking and delivery tool according to claim 2 is characterized in that: The rotating shaft is connected to the outer sleeve via a transmission pin.

4. The hydraulic VR blocking and delivery tool according to claim 3 is characterized in that: The inner wall of the outer sleeve is provided with an axially extending groove, and the inner sleeve is provided with a transmission pin, and the upper end of the transmission pin is slidably arranged in the groove.

5. The hydraulic VR blocking and delivery tool according to claim 4 is characterized in that: The outer end of the piston rod is provided with a connecting sleeve, and the outer wall of one end of the VR plug is threadedly connected to the inner wall of the connecting sleeve.

6. The hydraulic VR plugging and delivery tool according to claim 2 is characterized in that: The outer sleeve is located in the shell.

7. The hydraulic VR plugging and delivery tool according to claim 1 is characterized in that: A packing gland is arranged on the outer side of the shell, the rotating shaft is located inside the packing gland, and a rotating steel ball is arranged between the rotating shaft and the packing gland.

8. The hydraulic VR plugging and delivery tool according to claim 2 is characterized in that: A rotating steel ball is arranged between the outer sleeve and the shell.

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