A metal seal ring installation tool

Abstract

The utility model relates to oil pipe hanger installation tool technical field, concretely relates to a kind of metal sealing ring installation tools, it includes lower cover and upper cover;Lower cover and upper cover are fixedly connected between by at least three guide rods, lower cover is coaxially installed outside oil pipe hanger, the axial direction of guide rod is consistent with the orifice direction of oil pipe hanger;Guide rod both ends are respectively provided with stop face, stop face plane is perpendicular to guide rod axial direction, the stop face of guide rod both ends respectively sticks to lower cover cover surface and upper cover cover surface;Guide rod is simultaneously slidably sleeved with a gland, gland is located above metal sealing ring, metal sealing ring is located oil pipe hanger orifice;Upper cover is screw matched with screw rod, the displacement direction of screw rod is consistent with the axial direction of guide rod.The utility model solves the technical problem that synchronous stable pressure is applied in the process of metal sealing ring installation, and different models metal sealing ring are adapted.

Description

Technical Field

[0001] This utility model relates to the technical field of tubing hanger installation tools, and more specifically, to a metal sealing ring installation tool. Background Technology

[0002] In the oil and gas industry, tubing hangers need to be installed at the wellhead for oil and gas control. Under high pressure conditions, metal sealing rings are usually installed on the tubing hangers for high-pressure sealing.

[0003] However, currently, during the installation of metal sealing rings, due to the lack of professional tools, the metal sealing rings are often manually sealed into the tubing hanger by tapping. However, due to the uneven force during manual tapping, it is difficult to control the direction and force of each tap, which can easily cause the metal sealing ring to deviate during installation, thereby damaging the sealing ring and further reducing its sealing effect and service life. Utility Model Content

[0004] The purpose of this application is to provide a metal sealing ring installation tool that solves the technical problem of synchronous and stable pressure application during the installation of metal sealing rings and is compatible with different models of metal sealing rings.

[0005] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0006] A metal sealing ring installation tool includes a lower cover and an upper cover.

[0007] Preferably, the lower cover and the upper cover are fixedly connected by at least three guide rods, the lower cover is coaxially mounted outside the tubing hanger, and the axial direction of the guide rods is consistent with the pipe opening direction of the tubing hanger.

[0008] Preferably, the guide rod has a stop surface at each end, the plane of the stop surface is perpendicular to the axis of the guide rod, and the stop surfaces at both ends of the guide rod are respectively attached to the lower cover surface and the upper cover surface.

[0009] Preferably, all guide rods are simultaneously slidably fitted with a pressure cap, the pressure cap being located above a metal sealing ring, the metal sealing ring being located at the inlet of the tubing hanger.

[0010] Preferably, the upper cover is threaded with a screw, and the displacement direction of the screw is consistent with the axial direction of the guide rod.

[0011] Preferably, the lower cover has a through-hole at its center, and the diameter of the through-hole matches the outer diameter of the tubing hanger.

[0012] Preferably, the inner wall of the port is provided with an internal thread, and the outer wall of the tubing hanger is provided with an external thread.

[0013] Preferably, the lower cover has a plurality of first screw holes, and the number of the plurality of first screw holes corresponds to the number of guide rods.

[0014] Preferably, studs are coaxially fixed at both ends of the guide rod, and the stud at one end of the guide rod is matched and locked with the first screw hole on the lower cover.

[0015] Preferably, the upper cover has a plurality of first through holes, the number of which matches the number of guide rods.

[0016] Preferably, the stud at the other end of the guide rod passes through the first through hole in the upper cover, and a nut is threaded onto the stud at that end of the guide rod.

[0017] Preferably, the center of the top cover has a second screw hole.

[0018] Preferably, the screw is threaded through the second screw hole in the center of the upper cover, and the displacement direction of the screw is through the center position of the pressure cover.

[0019] Preferably, the end of the screw away from the pressure cap has a slot, and the slot is connected to an external driving component.

[0020] The technical solution of this application has at least the following advantages and beneficial effects:

[0021] This invention provides a lower cover coaxially fitted onto the tubing hanger, along with a guide rod that matches the lower and upper covers. This ensures that the guide rod's direction aligns with the tubing hanger's opening direction, allowing the pressure cap fitted onto the guide rod to always slide towards the tubing hanger's opening, thus improving the accuracy of the force direction when pressing down on the metal sealing ring.

[0022] This invention uses several guide rods with the same orientation to allow the cover to pass through the guide rods simultaneously, maintaining the levelness of the cover surface when the cover slides. The screw responsible for driving is aligned with the center of the cover, so that when the cover presses against the surface of the metal sealing ring, a force can be applied evenly to all parts of the metal sealing ring.

[0023] This invention uses a plate-shaped pressure cap to ensure that the metal sealing ring is always subjected to pressure from the plane. This pressure can be adapted to different types of metal sealing rings to complete the sealing installation.

[0024] This invention provides a horizontal stop at the connection between the guide rod and the cover, with the stop fitting horizontally to the cover, thereby ensuring the guide rod remains perpendicular to each cover and guaranteeing the guiding accuracy of the guide rod for the cap.

[0025] This invention sets up a screw that is threadedly matched with the upper cover. When the screw is driven by the drive component, it first rotates through the thread, and then the rotation is converted into displacement to press the metal sealing ring. During this process, the displacement of the screw will not be affected by the vibration of the drive component in the displacement direction, which would cause the displacement to change continuously. Instead, it will maintain a smooth displacement action, thereby reducing the impact of external vibration on the metal sealing ring and improving the stability of the metal sealing ring during installation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the lower cover in this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the upper cover in this utility model.

[0029] Figure 4 This is a schematic diagram of the guide rod in this utility model.

[0030] Figure 5 This is a schematic diagram of the screw structure in this utility model.

[0031] Figure 6 This is a schematic diagram of the structure of the pressure cap in this utility model.

[0032] Figure 7 This is a schematic diagram of the structure of this utility model installed on the oil pipe hanger.

[0033] Figure 8 This is a cross-sectional view of the present invention installed on the tubing hanger.

[0034] In the diagram: 1-lower cover, 11-first screw hole, 12-internal thread, 2-upper cover, 21-first through hole, 22-second screw hole, 3-guide rod, 31-stop face, 32-stud, 4-nut, 5-pressure cap, 51-second through hole, 6-screw, 61-slot, 7-oil pipe hanger, 71-external thread, 8-metal sealing ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Example

[0038] Please refer to Figures 1-8 This utility model provides a metal sealing ring installation tool to assist in the stable installation of the metal sealing ring 8 onto the oil pipe hanger 7 for sealing. The metal sealing ring installation tool includes a lower cover 1, an upper cover 2, a guide rod 3, a nut 4, a pressure cap 5, and a screw 6.

[0039] The lower cover 1 and the upper cover 2 are fixedly connected together by at least three guide rods 3. The lower cover 1 is used to install on the outside of the tubing hanger 7. The upper cover 2 is threaded with a screw 6. The screw 6 can be vertically displaced by rotating the screw. A pressure cap 5 is also slidably sleeved on the guide rod 3 between the lower cover 1 and the upper cover 2. The pressure cap 5 is located above the metal sealing ring 8. The metal sealing ring 8 is located at the pipe opening of the tubing hanger 7.

[0040] When installing the metal sealing ring 8, rotate the screw 6 to move it down, so that it can abut against the pressure plate 5 and drive the pressure plate 5 to press down. The pressure plate 5 is guided by multiple guide rods 3, and the pressing surface of the pressure plate 5 remains horizontal, so that the surface of the metal sealing ring 8 under pressure is evenly stressed, so that it evenly seals the pipe opening of the oil pipe hanger 7.

[0041] For details, please refer to Figure 2 and Figure 8 In this embodiment, the lower cover 1 has a through-hole in the center, and the inner wall of the through-hole is provided with an internal thread 12. The diameter of the through-hole matches the outer diameter of the tubing hanger 7, and the outer wall of the tubing hanger 7 is provided with an external thread 71, so that the lower cover 1 can be fixedly sleeved on the outside of the tubing hanger 7.

[0042] Several first screw holes 11 are also provided on the lower cover 1. The first screw holes 11 are evenly distributed around the opening as the axis, and the number of first screw holes 11 matches the number of guide rods 3.

[0043] Please refer to Figure 4 The guide rod 3 is coaxially fixed with studs 32 at both ends, and the guide rod 3 is matched and locked with the first screw hole 11 on the lower cover 1 through the stud 32 at one end.

[0044] Please refer to Figure 3 The upper cover 2 has a second screw hole 22 through the center, and the upper cover 2 also has a number of first through holes 21 through it. The number of first through holes 21 are evenly distributed around the second screw hole 22 as the axis, and the number of first through holes 21 matches the number of guide rods 3.

[0045] Preferably, the stud 32 at the other end of the guide rod 3 can pass through the first through hole 21 on the upper cover 2. Then, by fitting a nut 4 onto the stud 32 at this end of the guide rod 3, and by tightening the nut 4 to abut against the upper surface of the upper cover 2, the upper cover 2 and the guide rod 3 can be locked and fixed together.

[0046] Preferably, at this time, the studs 32 at both ends of the guide rod 3 are fixedly connected to the lower cover 1 and the upper cover 2 respectively. However, it is still impossible to guarantee the guiding accuracy of each guide rod 3 (because whether it is the matching between threads or the matching between shaft holes, it is a clearance fit. Therefore, even if the guide rod 3 is in an inclined position, it can be fixed at the lower cover 1 and the upper cover 2, and the guiding accuracy cannot be guaranteed). Therefore, the diameter of the stud 32 is smaller than the diameter of the guide rod 3, so that a stop surface 31 is formed between the guide rod 3 and the stud 32. When the guide rod 3 is connected to the lower cover 1 and the upper cover 2 respectively, the surfaces of the lower cover 1 and the upper cover 2 will abut against the stop surface 31, so that the axial direction of multiple guide rods 3 is perpendicular to the two cover surfaces, thereby maintaining the guiding accuracy of the guide rod.

[0047] For details, please refer to Figure 1 and Figure 6 The pressure cap 5 has several second through holes 51, the number of which corresponds one-to-one with the number of guide rods 3. The pressure cap 5 is simultaneously slidably sleeved on multiple guide rods 3 through the second through holes 51, so that the pressure cap 5 can slide under the guidance of the guide rods 3.

[0048] Preferably, the multiple guide rods 3 not only guide the sliding of the cover 5, but also maintain the flatness of the entire cover surface of the cover 5, so that the entire cover surface can apply force evenly to the metal sealing ring 8 when it subsequently contacts the metal sealing ring 8.

[0049] For details, please refer to Figure 1 and Figure 5In order to provide pressure driving force for the cover 5 during installation, in this embodiment, the screw 6 is threaded through the second screw hole 22 in the center of the cover 2. When the screw 6 rotates through the thread, the screw 6 can move along the guiding direction of the guide rod 3. During installation, the screw 6 can gradually move to abut against the cover plate, apply pressure to the cover plate, and thus allow the cover plate to press the metal sealing ring 8 to perform sealing work.

[0050] It is worth noting that the screw 6 is located at the center of the upper cover 2. The screw 6 will be at the axial center of the lower cover 1, the pressure cap 5, and the multiple guide rods 3. This means that when the screw 6 applies force to the pressure cap 5, the point of application is located at the center of the pressure cap 5. This can improve the uniform force on the pressure cap 5 and reduce the occurrence of the pressure cap 5 sliding, jamming, or blocking on the guide rods 3.

[0051] It is worth noting that a slot 61 is also provided at the end of the screw 6 away from the pressure cap 5. In some embodiments, the slot 61 of the screw 6 can be manually rotated by the operator using an installation tool (such as a wrench), or the slot 61 can be used to connect the drive shaft of the rotating device (such as a motor) to automatically rotate the screw 6, thereby improving installation efficiency.

[0052] Preferably, the installation steps for installing the metal seal ring 8 onto the tubing hanger 7 using the entire metal seal ring installation tool are as follows:

[0053] Step 1: Thread the lower cover 1 onto the outer tube of the tubing hanger 7, and then thread one end of several guide rods 3 onto the lower cover 1, so that the guiding direction of the guide rods 3 is consistent with the direction of the tube opening of the tubing hanger 7.

[0054] Step 2: Simultaneously place the pressure cap 5 onto all the guide rods 3, and then place the upper cover 2 onto the other end of several guide rods 3, and lock it in place with the nut 4.

[0055] Step 3: Place a metal sealing ring 8 at the inlet of the tubing hanger 7. The metal sealing ring 8 is located below the gland 5.

[0056] Step 4: The screw 6 of the upper cover 2 is connected to the drive component. The screw 6 rotates and moves, pushing the pressure cover 5. The pressure cover 5 pushes the metal sealing ring 8 into the pipe opening of the oil pipe hanger 7 to achieve a sealed installation.

[0057] Step 5: Directly rotate the lower cover 1 to separate the lower cover 1 from the oil pipe hanger 7, and then you can directly remove the entire metal sealing ring installation tool.

[0058] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A metal sealing ring installation tool, characterized in that, Includes a lower cover (1) and an upper cover (2); The lower cover (1) and the upper cover (2) are fixedly connected by at least three guide rods (3). The lower cover (1) is coaxially installed outside the tubing hanger (7). The axial direction of the guide rods (3) is consistent with the pipe opening direction of the tubing hanger (7). The guide rod (3) has baffles (31) at both ends. The plane of the baffles (31) is perpendicular to the axis of the guide rod (3). The baffles (31) at both ends of the guide rod (3) are respectively attached to the cover surface of the lower cover (1) and the cover surface of the upper cover (2). All guide rods (3) are simultaneously slidably fitted with a pressure cap (5), the pressure cap (5) being located above the metal sealing ring (8), and the metal sealing ring (8) being located at the pipe opening of the tubing hanger (7); The upper cover (2) is threaded with a screw (6), and the displacement direction of the screw (6) is consistent with the axial direction of the guide rod (3).

2. The metal sealing ring installation tool according to claim 1, characterized in that, The lower cover (1) has a through-hole in the center, and the diameter of the through-hole matches the outer diameter of the oil pipe hanger (7). The inner wall of the port is provided with an internal thread (12), and the outer wall of the tubing hanger (7) is provided with an external thread (71).

3. The metal sealing ring installation tool according to claim 1, characterized in that, The lower cover (1) has a plurality of first screw holes (11) through it, and the number of the plurality of first screw holes (11) matches the number of guide rods (3); The guide rod (3) has studs (32) fixed coaxially at both ends. The stud (32) at one end of the guide rod (3) is matched and locked with the first screw hole (11) on the lower cover (1).

4. A metal sealing ring installation tool according to claim 1, characterized in that, The upper cover (2) has a number of first through holes (21), and the number of the first through holes (21) matches the number of guide rods (3). The stud (32) at the other end of the guide rod (3) passes through the first through hole (21) on the upper cover (2), and a nut (4) is threaded on the stud (32) at this end of the guide rod (3).

5. A metal sealing ring installation tool according to claim 1, characterized in that, The center of the upper cover (2) has a second screw hole (22); The screw (6) is threaded through the second screw hole (22) in the center of the upper cover (2), and the displacement direction of the screw (6) is through the center position of the pressure cap (5).

6. A metal sealing ring installation tool according to claim 1, characterized in that, The screw (6) has a slot (61) at the end away from the pressure cap (5), and the slot (61) is connected to an external drive component.

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