Metal seal tubing hanger
By incorporating adjustment and sealing devices into the tubing hanger, the problem of poor sealing caused by pressure variations within the tubing is solved, achieving adaptive sealing and improving the connection stability and sealing performance between the tubing and the hanger.
Patent Information
- Application Number
- CN202520220081.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-12
AI Technical Summary
When the pressure inside the oil pipe changes, the position between the rubber ring on the outside of the hanger and the inner wall of the oil pipe may change, resulting in poor sealing performance.
A metal-sealed tubing hanger is used. By incorporating an adjustment device within the hanger body, including components such as a rubber sleeve, a round rod, a spring, and a stop bar, the rubber sleeve can adapt to changes in the internal pressure of the tubing, ensuring a tight fit against the inner wall of the tubing. Combined with a sealing device, this further enhances the sealing effect.
This effectively avoids gaps between the outer side of the hanger and the inner wall of the oil pipe when the internal pressure changes, improving the sealing effect and ensuring a stable connection and sealing performance between the oil pipe and the hanger.
Smart Images
Figure CN223634670U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil pipe hanger technical field especially relates to a metal seal oil pipe hanger. BACKGROUND
[0002] The oil pipe hanger is a device for supporting the oil pipe column and sealing the annular space between the oil pipe and the casing. The oil pipe hanger sealing method is to use the oil pipe gravity to seat the oil pipe hanger and the oil pipe into the four-way cone, which is convenient to operate, fast and safe in wellhead replacement, and thus is widely used in medium-deep wells and conventional wells.
[0003] When the oil pipe hanger is placed inside the oil pipe, the rubber ring outside the hanger seals the inside of the oil pipe. When the internal pressure of the oil pipe changes, the position between the rubber ring outside the hanger and the inner wall of the oil pipe may change, resulting in poor sealing effect of the hanger. UTILITY MODEL CONTENT
[0004] The utility model discloses a metal seal oil pipe hanger to solve the problem that when the internal pressure of the oil pipe changes, the position between the rubber ring outside the hanger and the inner wall of the oil pipe may change, resulting in poor sealing effect of the hanger.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a metal seal oil pipe hanger, comprising an oil pipe body and a hanger body, the hanger body is located inside the oil pipe body, the inner wall of the oil pipe body is screw connected with a bolt, the outer surface of the hanger body is provided with a fastening groove, the upper and lower ends of the hanger body are respectively provided with adjusting devices that can tightly seal the space between the hanger body and the inner wall of the oil pipe body, and the top end of the hanger body is provided with a sealing device that can further seal the inside of the connection between the hanger body and the pipeline.
[0006] The above-mentioned components achieve the following effects: when using the metal seal oil pipe hanger, the hanger body is inserted into the inside of the oil pipe body, the position of the hanger body is adjusted, the bolt outside the oil pipe body is rotated to move one end into the fastening groove on the outer surface of the hanger body, the position of the hanger body inside the oil pipe body is fixed, and the adjusting assembly on the outer surface of the hanger body seals the inner wall of the oil pipe body.
[0007] Preferably, the adjusting device comprises a rubber sleeve, a bottom end of the rubber sleeve is fixedly connected with an outer surface of the hanger body, the outer surface of the hanger body is provided with a plurality of circular grooves, the circular grooves are circumferentially distributed on the outer surface of the hanger body, inner walls of the circular grooves are slidably connected with circular rods, one end of the circular rod is fixedly connected with the inner wall of the rubber sleeve, an outer surface of the circular rod is slidably connected with a circular ring, one side of the circular ring is provided with a spring, two ends of the spring are fixedly connected with one side of the circular ring and an outer surface of one end of the circular rod away from the circular ring.
[0008] The above component achieves the effect that: by arranging the rubber sleeve, when the hanger body is in the inside of the oil pipe body, rotating the bolt to move on the inner wall of the oil pipe body and clamping one end at the fastening groove outside the hanger body, the mutual position between the hanger body and the oil pipe body is fixed, when the outer side of the rubber sleeve contacts with the inner wall of the oil pipe body, the rubber sleeve is pushed to shrink, each circular rod inside the rubber sleeve slides to the inside of the circular groove through the circular ring while compressing the spring on the outer surface of the circular rod, the outer side of the rubber sleeve is always tightly attached to the inner wall of the oil pipe body by the pushing force of the spring, the outer shape of the rubber sleeve can adapt to the pressure change in the inside of the oil pipe body, and the problem of poor sealing effect caused by the gap between the outer side of the hanger body and the inner wall of the oil pipe body when the pressure in the inside of the oil pipe body changes is avoided as much as possible.
[0009] Preferably, the adjusting device comprises a plurality of blocking rods, upper and lower ends of one of the blocking rods are fixedly connected with one end of two circular rods.
[0010] The above component achieves the effect that: by arranging the blocking rod, the inner wall of the rubber sleeve between the two circular rods can be supported, so that the rubber sleeve is not easy to inwardly sag.
[0011] Preferably, the inner wall of the circular groove is fixedly connected with inclined blocks at upper and lower ends, the inclined blocks are made of rubber material.
[0012] The above component achieves the effect that: when the pressure in the inside of the oil pipe body changes greatly and pushes the rubber sleeve to inwardly shrink, one end of the circular rod slides to the two rubber inclined blocks in the inside of the circular groove, the movement of the circular rod can be blocked by the rubber inclined blocks, so that the problem of poor sealing effect caused by the rubber sleeve shrinking too much due to the too large pressure difference is avoided as much as possible.
[0013] Preferably, one end of the circular ring is provided with a limiting assembly, the limiting assembly comprises two rectangular blocks, one end of the two rectangular blocks is fixedly connected with one side of the circular ring, one end of the two rectangular blocks away from the circular ring is fixedly connected with a limiting ring, the limiting ring is located on the outside of the spring.
[0014] The effect achieved by the above component is that when the circular rod moves to deform the spring, the spring moves inside the limiting ring, the limiting ring can reinforce the outer surface shape of the spring when the spring moves, and the structure of different regions of the outer surface of the spring is as little as possible to be staggered to affect the normal use of the spring.
[0015] Preferably, the top end of the hanger body is provided with a sealing device, the sealing device comprises a gasket ring, the top end of the gasket ring is fixedly connected with a sealing ring, the bottom end of the gasket ring is fixedly connected with a plurality of insertion rods, the top end of the hanger body is provided with a plurality of clamping grooves, and the bottom end of the gasket ring is provided with two grooves.
[0016] The effect achieved by the above component is that when the hanger body is used, the insertion rods at the bottom end of the gasket ring can be inserted into the clamping grooves at the top end of the hanger body, the gasket ring and the sealing ring can be installed at the top end of the hanger body, when the top end of the hanger body is connected with the pipeline, the sealing ring is inside the connection between the pipeline and the top end of the hanger body, the sealing ring can further seal the inside of the connection between the pipeline and the top end of the hanger body, and after a single use is completed, the gasket ring can be lifted at one end by inserting a tool into the two grooves at the bottom end of the gasket ring, so that the gasket ring and the sealing ring are conveniently disassembled and replaced.
[0017] Preferably, the outer surface of the insertion rod is fixedly connected with a plurality of convex strips, the convex strips are linearly distributed on the outer surface of the insertion rod, and the convex strips are made of rubber.
[0018] The effect achieved by the above component is that the convex strips made of rubber can increase the friction when the outer surface of the insertion rod inserted into the clamping groove contacts the inner wall of the clamping groove, so that the insertion rod is not easy to accidentally fall off from the inside of the clamping groove.
[0019] Compared with the prior art, the advantages and positive effects of the utility model lie in that:
[0020] In the utility model, when the hanger body is inside the oil pipe body, the rubber sleeve is always tightly attached to the inner wall of the oil pipe body through the pushing force of the spring, so that the outer shape of the rubber sleeve can adapt to the pressure change inside the oil pipe body, and the problem that a gap exists between the outer side of the hanger body and the inner wall of the oil pipe body when the pressure inside the oil pipe body changes, thereby affecting the sealing effect, is avoided as much as possible. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0022] Figure 2 It is a partial cross-section three-dimensional structure schematic view of the oil pipe body of the utility model;
[0023] Figure 3 It is a partial cross-section three-dimensional structure schematic view of the hanger body of the utility model;
[0024] Figure 4 For the utility model Figure 3 A place local enlarged perspective structure schematic diagram of the utility model is shown in the figure.
[0025] Figure 5 For the utility model sealing ring place's perspective structure schematic diagram.
[0026] Legend: 1, oil pipe body; 2, adjusting device; 3, sealing device; 4, hanger body; 5, bolt; 6, fastening groove; 21, round groove; 22, round rod; 23, circular ring; 24, spring; 25, rubber sleeve; 26, limiting assembly; 261, rectangular block; 262, limiting ring; 27, stop rod; 28, inclined block; 31, clamping groove; 32, grommet; 33, insertion rod; 34, sealing ring; 35, groove; 36, convex strip. DETAILED DESCRIPTION
[0027] Example 1, as Figures 1-4 shown, a metal sealing oil pipe hanger, including oil pipe body 1 and hanger body 4, hanger body 4 is located in the inside of oil pipe body 1, the inner wall of oil pipe body 1 is connected with bolt 5, the outer surface of hanger body 4 is provided with fastening groove 6, the upper and lower ends of hanger body 4 are respectively provided with adjusting device 2 that can be tightly sealed between hanger body 4 and the inner wall of oil pipe body 1, the top end of hanger body 4 is provided with sealing device 3 that can further seal the inside of pipe connection, when using metal sealing oil pipe hanger, hanger body 4 is inserted into the inside of oil pipe body 1, the position of hanger body 4 is adjusted, bolt 5 outside oil pipe body 1 is rotated and moved to insert one end into the inside of fastening groove 6 on the outer surface of hanger body 4, the position of hanger body 4 in the inside of oil pipe body 1 is fixed, and the inner wall of oil pipe body 1 is sealed by adjusting assembly on the outer surface of hanger body 4.
[0028] Refer to Figures 2-4As shown, in the embodiment: the adjusting device 2 comprises a rubber sleeve 25, the bottom end of the rubber sleeve 25 is fixedly connected with the outer surface of the hanger body 4, the outer surface of the hanger body 4 is provided with a plurality of circular grooves 21, the circular grooves 21 are circumferentially distributed on the outer surface of the hanger body 4, the inner wall of the circular groove 21 is slidably connected with a circular rod 22, one end of the circular rod 22 is fixedly connected with the inner wall of the rubber sleeve 25, the outer surface of the circular rod 22 is slidably connected with a circular ring 23, one side of the circular ring 23 is provided with a spring 24, and the two ends of the spring 24 are respectively fixedly connected with one side of the circular ring 23 and the outer surface of the end of the circular rod 22 away from the circular ring 23. By arranging the rubber sleeve 25, when the hanger body 4 is in the inside of the oil pipe body 1, rotating the bolt 5 to move in the inner wall of the oil pipe body 1 and clamping one end at the fastening groove 6 outside the hanger body 4, the relative position between the hanger body 4 and the oil pipe body 1 is fixed, and when the outer side of the rubber sleeve 25 contacts the inner wall of the oil pipe body 1, the rubber sleeve 25 is pushed to shrink, each circular rod 22 located in the rubber sleeve 25 slides to the inside of the circular groove 21 through the circular ring 23 and compresses the spring 24 on the outer surface of the circular rod 22, the outer side of the rubber sleeve 25 is always tightly attached to the inner wall of the oil pipe body 1 through the pushing force of the spring 24, so that the external shape of the rubber sleeve 25 can adapt to the pressure change in the inside of the oil pipe body 1, and the problem that a gap exists between the outer side of the hanger body 4 and the inner wall of the oil pipe body 1 when the pressure in the inside of the oil pipe body 1 changes, thereby causing poor sealing effect, is avoided as much as possible.
[0029] Referring to Figures 2-4 As shown, in the embodiment: the adjusting device 2 comprises a plurality of blocking rods 27, the upper and lower ends of one blocking rod 27 are respectively fixedly connected with the one end of two circular rods 22, the blocking rod 27 can support the inner wall of the rubber sleeve 25 between the two circular rods 22, so that the rubber sleeve 25 is not easy to inwardly sag, and the inner wall of the circular groove 21 is respectively fixedly connected with inclined blocks 28 at the upper and lower ends, the inclined blocks 28 are made of rubber material, when the pressure in the inside of the oil pipe body 1 changes greatly and pushes the rubber sleeve 25 to inwardly shrink, the one end of the circular rod 22 slides to the two rubber inclined blocks 28 in the inside of the circular groove 21, and the rubber inclined blocks 28 can block the movement of the circular rod 22, thereby avoiding the problem that the pressure difference is too large, the rubber sleeve 25 shrinks too much, and the sealing effect is poor as much as possible.
[0030] Referring to Figures 2-4As shown in the figure, in the embodiment: one end of the circular ring 23 is provided with a limiting assembly 26 which can limit the shape of the outer surface of the spring 24, the limiting assembly 26 comprises two rectangular blocks 261, one end of the two rectangular blocks 261 is fixedly connected with one side of the circular ring 23, and the end of the two rectangular blocks 261 away from the circular ring 23 is fixedly connected with a limiting ring 262, the limiting ring 262 is located on the outside of the spring 24, and the spring 24 will move inside the limiting ring 262 when the circular rod 22 moves to deform the spring 24. The limiting ring 262 can reinforce the shape of the outer surface of the spring 24 when the spring 24 moves, so as to as far as possible avoid that the structures of different regions of the outer surface of the spring 24 are staggered, thereby affecting the normal use of the spring 24.
[0031] Referring to Figure 1 , Figure 2 and Figure 5 As shown in the figure, in the embodiment: the top end of the hanger body 4 is provided with a sealing device 3, the sealing device 3 comprises a gasket ring 32, the top end of the gasket ring 32 is fixedly connected with a sealing ring 34, and the bottom end of the gasket ring 32 is fixedly connected with a plurality of insertion rods 33; the top end of the hanger body 4 is provided with a plurality of clamping grooves 31, and the bottom end of the gasket ring 32 is provided with two grooves 35; when the hanger body 4 is used, each insertion rod 33 at the bottom end of the gasket ring 32 can be inserted into the clamping groove 31 at the top end of the hanger body 4, the gasket ring 32 and the sealing ring 34 can be installed at the top end of the hanger body 4, and when the top end of the hanger body 4 is connected with the pipeline, the sealing ring 34 is located on the inside of the connection between the pipeline and the top end of the hanger body 4, the sealing ring 34 can further seal the inside of the connection between the pipeline and the top end of the hanger body 4, and after a single use is completed, a tool can be inserted into the two grooves 35 at the bottom end of the gasket ring 32 to lift one end of the gasket ring 32, so that the gasket ring 32 and the sealing ring 34 can be conveniently disassembled and replaced.
[0032] Referring to Figure 2 and Figure 5 As shown in the figure, in the embodiment: the outer surface of the insertion rod 33 is fixedly connected with a plurality of convex strips 36, the convex strips 36 are linearly distributed on the outer surface of the insertion rod 33, and the convex strips 36 are made of rubber material; by arranging the convex strips 36 made of rubber material, the friction force when the outer surface of the insertion rod 33 inserted into the clamping groove 31 contacts with the inner wall of the clamping groove 31 can be increased, so that the insertion rod 33 is not easy to accidentally fall off from the inside of the clamping groove 31.
[0033] Working principle: when using the metal sealing tubing hanger, insert the hanger body 4 into the tubing body 1, adjust the position of the hanger body 4, rotate the bolt 5 outside the tubing body 1 to move one end into the fastening groove 6 on the outer surface of the hanger body 4, fix the position of the hanger body 4 inside the tubing body 1, insert each insertion rod 33 at the bottom of the grommet 32 into the clamping groove 31 at the top of the hanger body 4, install the grommet 32 and the sealing ring 34 at the top of the hanger body 4, when connecting the top of the hanger body 4 with the pipeline, the sealing ring 34 will be inside the connection between the pipeline and the top of the hanger body 4, and the sealing ring 34 can further seal the inside of the connection between the pipeline and the top of the hanger body 4, when the hanger body 4 is inside the tubing body 1, rotate the bolt 5 to move one end to the fastening groove 6 outside the hanger body 4, fix the relative position between the hanger body 4 and the tubing body 1, when the outer side of the rubber sleeve 25 contacts with the inner wall of the tubing body 1, it will push the rubber sleeve 25 to shrink, so that each round rod 22 inside the rubber sleeve 25 slides to the inside of the circular groove 21 through the circular ring 23 while compressing the spring 24 on the outer surface of the round rod 22, the outer side of the rubber sleeve 25 is always tightly attached to the inner wall of the tubing body 1 by the pushing force of the spring 24, so that the outer shape of the rubber sleeve 25 can adapt to the pressure change inside the tubing body 1, after the single use of the metal sealing tubing hanger is completed, tools can be inserted into the two grooves 35 at the bottom of the grommet 32 to lift one end of the grommet 32, so that the grommet 32 and the sealing ring 34 can be easily removed and replaced.
[0034] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall fall within the protection scope of the present application. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, detachable connection or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A metal-sealed oil pipe hanger, comprising an oil pipe body (1) and a hanger body (4), characterized in that: The suspension body (4) is located inside the oil pipe body (1). The inner wall of the oil pipe body (1) is threaded with bolts (5). The outer surface of the suspension body (4) is provided with a fastening groove (6). The upper and lower ends of the suspension body (4) are respectively provided with adjustment devices (2) that can tightly seal the connection between the suspension body (4) and the inner wall of the oil pipe body (1). The top of the suspension body (4) is provided with a sealing device (3) that can further seal the connection between the suspension body (4) and the pipeline.
2. The metal-sealed oil pipe hanger according to claim 1, characterized in that: The adjusting device (2) includes a rubber sleeve (25), the bottom end of which is fixedly connected to the outer surface of the suspension body (4). The outer surface of the suspension body (4) is provided with several circular grooves (21), which are distributed in a circle on the outer surface of the suspension body (4). A circular rod (22) is slidably connected to the inner wall of the circular groove (21). One end of the circular rod (22) is fixedly connected to the inner wall of the rubber sleeve (25). A circular ring (23) is slidably connected to the outer surface of the circular rod (22). A spring (24) is provided on one side of the circular ring (23). The two ends of the spring (24) are fixedly connected to one side of the circular ring (23) and the outer surface of the circular rod (22) away from the circular ring (23), respectively.
3. A metal-sealed oil pipe hanger according to claim 2, characterized in that: The adjusting device (2) includes several stop bars (27), and the upper and lower ends of one stop bar (27) are respectively fixedly connected to one end of two round rods (22).
4. A metal-sealed oil pipe hanger according to claim 3, characterized in that: The inner walls of the circular groove (21) are fixedly connected to the upper and lower ends of the inclined blocks (28), which are made of rubber.
5. A metal-sealed oil pipe hanger according to claim 4, characterized in that: One end of the ring (23) is provided with a limiting component (26) that can restrict the shape of the outer surface of the spring (24).
6. A metal-sealed oil pipe hanger according to claim 5, characterized in that: The limiting component (26) includes two rectangular blocks (261), one end of which is fixedly connected to one side of the ring (23), and the end of the two rectangular blocks (261) away from the ring (23) is fixedly connected to a limiting ring (262), which is located outside the spring (24).
7. A metal-sealed oil pipe hanger according to claim 6, characterized in that: The top of the suspension body (4) is provided with a sealing device (3), the sealing device (3) includes a gasket (32), the top of the gasket (32) is fixedly connected with a sealing ring (34), the bottom of the gasket (32) is fixedly connected with a number of insert rods (33), the top of the suspension body (4) is provided with a number of slots (31), and the bottom of the gasket (32) is provided with two grooves (35).
8. A metal-sealed oil pipe hanger according to claim 7, characterized in that: The outer surface of the insertion rod (33) is fixedly connected with several protrusions (36), which are linearly distributed on the outer surface of the insertion rod (33) and are made of rubber.