Sand-containing crude oil production wear-resistant tubing box joint

Abstract

The utility model provides a kind of sand-containing crude oil exploitation wear-resistant oil pipe sleeve joint, it is related to pipeline connecting technical field, including joint, clamping mechanism and buffer mechanism, the clamping mechanism includes first clamping ring and second clamping ring, the second clamping ring is located above first clamping ring, the first clamping ring and second clamping ring are used to connect joint and external pipeline to improve clamping effect;The buffer mechanism includes flow guide barrel and rubber strip, the inside fixed connection of rubber strip and flow guide barrel, in the utility model, pipe is connected with external pipe body, first clamping ring and second clamping ring can clamp the surface of external pipe body, so that the stability when pipe and external pipe body are connected can be improved, flow guide barrel is used simultaneously, sand grain entering joint can be drained, and rubber strip can block and buffer sand grain in flow guide barrel, slow sand grain impact, prevent sand grain impact too large from causing abrasion to joint.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a wear-resistant oil pipe casing joint for sand-bearing crude oil extraction. Background Technology

[0002] Pipe fittings are special connectors designed for high-wear conditions. They typically use high-hardness alloys (such as nickel-based alloys) or ceramic composite layers (such as corundum ceramics with a Mohs hardness of 9) as wear-resistant liners, which can reduce the wear rate to that of ordinary steel pipes. Currently, when this connector is connected to an external pipe, it is usually fixed by a threaded connection. This makes the connection between the connector and the external pipe susceptible to loosening due to external factors, thereby reducing the connection quality between the connector and the pipe. Meanwhile, when this joint is in use, sand particles in the oil well can easily impact the inside of the joint longitudinally, causing the sand particles to easily erode the inside of the joint, resulting in a reduction in the wall thickness of the joint, thus affecting the normal use of the joint.

[0003] Therefore, we propose a wear-resistant tubing casing joint for sand-bearing crude oil extraction to solve the problems mentioned above. Utility Model Content

[0004] This utility model proposes a wear-resistant oil pipe casing joint for sandy crude oil extraction to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a connector, a clamping mechanism and a buffer mechanism, wherein the clamping mechanism includes a first clamping ring and a second clamping ring, the second clamping ring being located above the first clamping ring, and the first clamping ring and the second clamping ring being used to connect the connector to the external pipeline to improve the clamping effect; The buffer mechanism includes a diversion cylinder and a rubber strip, which are fixedly connected to the inside of the diversion cylinder. The diversion cylinder and the rubber strip are used to divert sand during oil extraction, thereby buffering the impact force of the sand particles.

[0006] Preferably, the clamping mechanism further includes a threaded rod, the outer surface of which is sleeved and connected to the first clamping ring and the second clamping ring respectively. A nut is provided on the outer surface of the threaded rod, and the nut is located above the second clamping ring. Sealing blocks are fixedly connected to the inner bottom wall of the first clamping ring and the inner top wall of the second clamping ring.

[0007] Preferably, the buffer mechanism further includes a rubber pad, the lower surface of which is fixedly connected to the upper surface of the drainage tube.

[0008] Preferably, the front and rear surfaces of the connector are both fixedly connected to a connecting pipe, and the inner wall of the connecting pipe is fixedly connected to the lower surface of the drainage tube.

[0009] Preferably, the upper and lower surfaces of the connector are both fixedly connected to movable seats, and the interior of the movable seats is movably connected to an adjusting plate via bearings. The adjusting plate is movably connected to the lower surface of the first clamping ring and the upper surface of the second clamping ring via bearings.

[0010] Preferably, a spring is fixedly connected to the inner bottom wall of the movable seat, and the top end of the spring is fixedly connected to the lower surface of the adjusting plate.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the ends of the connector to be connected and the external pipe are aligned and placed between the first clamping ring and the second clamping ring. The second clamping ring transmits downward pressure to the connector through the adjusting plate and the movable seat. According to the lever principle, the downward pressure is converted into a force that causes the first clamping ring to move upward, thereby realizing the opposite movement of the first clamping ring and the second clamping ring. The sealing block on its inner side is tightly pressed against the outer surface of the connector and the external pipe. When the clamping and sealing effect meets the requirements, the nut on the outer surface of the threaded rod is turned. Through the axial locking force of the nut, the relative position of the first clamping ring and the second clamping ring is fixed, preventing the clamping mechanism from loosening due to vibration and other factors during subsequent use, and maintaining the stability of the connection in the long term.

[0012] 2. In this invention, the fluid mixed with sand particles first enters the guide tube, guiding the sand particles that would otherwise directly impact the inner wall of the joint to a specific path. As the sand particles flow along the inside of the guide tube, they come into contact with the rubber strip, causing collisions and friction between the sand particles and the rubber strip. Part of the impact force of the sand particles is absorbed by the deformation of the rubber material, thereby effectively reducing the impact velocity of the sand particles. The strong impact of the sand particles on the joint is transformed into non-destructive friction and collision between the sand particles and the rubber components, greatly reducing the direct wear of the sand particles on the inner wall of the joint and the connecting pipe, and extending the service life of the equipment. Attached Figure Description

[0013] Figure 1 This utility model provides a perspective view of the main structure of a wear-resistant tubing casing joint for sand-bearing crude oil extraction. Figure 2 This utility model provides a three-dimensional view of the clamping mechanism structure in the wear-resistant tubing casing joint for sand-bearing crude oil extraction; Figure 3 This utility model provides a three-dimensional view of the movable seat structure in a wear-resistant tubing casing joint for sand-bearing crude oil extraction; Figure 4 This utility model proposes a wear-resistant tubing casing joint for sand-bearing crude oil extraction. Figure 1 Three-dimensional view of the structure at point A in the middle.

[0014] Legend: 1. Connector; 2. Movable seat; 3. Connecting pipe; 4. Buffer mechanism; 401. Drainage tube; 402. Rubber pad; 403. Rubber strip; 5. Adjusting plate; 6. Spring; 7. Clamping mechanism; 701. Threaded rod; 702. First clamping ring; 703. Sealing block; 704. Nut; 705. Second clamping ring. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can also be implemented in other ways than those described herein, and therefore the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1, as shown in the attached document Figures 1-4 As shown, it includes a connector 1, a clamping mechanism 7 and a buffer mechanism 4. The clamping mechanism 7 includes a first clamping ring 702 and a second clamping ring 705. The second clamping ring 705 is located above the first clamping ring 702. The first clamping ring 702 and the second clamping ring 705 are used to connect the connector 1 to the external pipe to improve the clamping effect. The buffer mechanism 4 includes a diversion cylinder 401 and a rubber strip 403. The rubber strip 403 is fixedly connected to the inside of the diversion cylinder 401. The diversion cylinder 401 and the rubber strip 403 are used to divert sand in oil extraction, thereby buffering the impact of sand particles.

[0018] The overall effect of embodiment 1 is as follows: by using the first clamping ring 702 and the second clamping ring 705, the connector 3 is connected to the external pipe body. The first clamping ring 702 and the second clamping ring 705 can clamp the surface of the external pipe body, thereby improving the stability of the connection between the connector 3 and the external pipe body. At the same time, the drainage tube 401 can drain the sand particles entering the connector 1, while the rubber strip 403 can block and buffer the sand particles in the drainage tube 401 to slow down the impact of the sand particles and prevent the sand particles from being too strong and causing wear to the connector 1.

[0019] Example 2, as Figures 1-3As shown, the clamping mechanism 7 also includes a threaded rod 701. The outer surface of the threaded rod 701 is sleeved and connected to the first clamping ring 702 and the second clamping ring 705 respectively. A nut 704 is provided on the outer surface of the threaded rod 701, and the nut 704 is located above the second clamping ring 705. A sealing block 703 is fixedly connected to the inner bottom wall of the first clamping ring 702 and the inner top wall of the second clamping ring 705. A movable seat 2 is fixedly connected to the upper and lower surfaces of the connector 1. An adjusting plate 5 is movably connected to the inside of the movable seat 2 through a bearing. The adjusting plate 5 is movably connected to the lower surface of the first clamping ring 702 and the upper surface of the second clamping ring 705 through a bearing respectively. A spring 6 is fixedly connected to the inner bottom wall of the movable seat 2, and the top end of the spring 6 is fixedly connected to the lower surface of the adjusting plate 5.

[0020] The effect achieved by the entire embodiment 2 is as follows: the end of the connector 1 to be connected and the external pipe are aligned and placed between the first clamping ring 702 and the second clamping ring 705. The second clamping ring 705 transmits downward pressure to the connector through the adjusting plate 5 and the movable seat 2. According to the lever principle, the downward pressure is converted into a force that makes the first clamping ring 702 move upward, thereby realizing the opposite movement of the first clamping ring 702 and the second clamping ring 705. The sealing block 703 on its inner side is tightly pressed against the outer surface of the connector 1 and the external pipe. When the clamping and sealing effect meets the requirements, the nut 704 on the outer surface of the threaded rod 701 is turned. Through the axial locking force of the nut 704, the relative position of the first clamping ring 702 and the second clamping ring 705 is fixed, preventing the clamping mechanism 7 from loosening due to vibration and other factors during subsequent use, and maintaining the stability of the connection for a long time.

[0021] Example 3, as Figure 1 and Figure 4 As shown, the buffer mechanism 4 also includes a rubber pad 402, the lower surface of which is fixedly connected to the upper surface of the drainage tube 401, and the front and rear surfaces of the connector 1 are both fixedly connected to the pipe 3, the inner wall of which is fixedly connected to the lower surface of the drainage tube 401.

[0022] The overall effect of embodiment 3 is as follows: In oil extraction, the fluid mixed with sand particles first enters the diversion cylinder 401, guiding the sand particles that originally directly impacted the inner wall of the joint 1 to a specific path. When the sand particles flow along the inside of the diversion cylinder 401, they come into contact with the rubber strip 403. The sand particles collide and rub against the rubber strip 403. Part of the impact of the sand particles is absorbed by the deformation of the rubber material, thereby effectively reducing the impact speed of the sand particles. The strong impact of the sand particles on the joint 1 is transformed into non-destructive friction and collision between the sand particles and the rubber components, which greatly reduces the direct wear of the sand particles on the inner wall of the joint 1 and the pipe 3, and extends the service life of the equipment.

[0023] The working principle of the entire device is as follows: Align the end of the connector 1 to be connected with the end of the external pipe and place it between the first clamping ring 702 and the second clamping ring 705. Through the second clamping ring 705, the downward pressure is transmitted to the connector 1 with the help of the adjusting plate 5 and the movable seat 2. Using the lever principle, the downward pressure is converted into a force that drives the first clamping ring 702 to move upward, so that the first clamping ring 702 and the second clamping ring 705 move towards each other, closing the clamping mechanism 7. After the clamping and sealing effect meets the requirements, tighten the nut 704 on the outer surface of the threaded rod 701. Through the axial locking force of the nut 704, fix the relative position of the first clamping ring 702 and the second clamping ring 705, and prevent the clamping mechanism 7 from loosening due to vibration and other factors during subsequent use. During oil extraction, the fluid mixed with sand particles first enters the diversion cylinder 401. The diversion cylinder 401 provides a pre-set centralized flow channel to prevent sand particles from directly impacting the inner wall of the joint 1. When the sand particles flow along the inside of the diversion cylinder 401, they collide and rub against the rubber strip 403 fixed on the inner wall of the cylinder. The deformation of the rubber material absorbs part of the impact kinetic energy of the sand particles, reducing the impact speed of the sand particles. After being slowed down by the rubber strip 403, the sand particles continue to move upward and are blocked by the rubber pad 402 at the top of the diversion cylinder 401, further consuming the remaining impact force of the sand particles. At the same time, the rubber pad 402 plays a sealing role, preventing the sand particles from escaping from the top and confining the sand particles within the diversion channel.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A wear-resistant tubing casing joint for sand-bearing crude oil extraction, characterized in that: It includes a connector (1), a clamping mechanism (7) and a buffer mechanism (4). The clamping mechanism (7) includes a first clamping ring (702) and a second clamping ring (705). The second clamping ring (705) is located above the first clamping ring (702). The first clamping ring (702) and the second clamping ring (705) are used to connect the connector (1) to the external pipeline to improve the clamping effect. The buffer mechanism (4) includes a diversion cylinder (401) and a rubber strip (403). The rubber strip (403) is fixedly connected to the inside of the diversion cylinder (401). The diversion cylinder (401) and the rubber strip (403) are used to divert sand in oil extraction, thereby buffering the impact of sand particles.

2. The wear-resistant tubing casing joint for sand-bearing crude oil extraction according to claim 1, characterized in that: The clamping mechanism (7) further includes a threaded rod (701), the outer surface of which is sleeved and connected to the first clamping ring (702) and the second clamping ring (705) respectively. A nut (704) is provided on the outer surface of the threaded rod (701), and the nut (704) is located above the second clamping ring (705). A sealing block (703) is fixedly connected to the inner bottom wall of the first clamping ring (702) and the inner top wall of the second clamping ring (705).

3. The wear-resistant tubing casing joint for sand-bearing crude oil extraction according to claim 1, characterized in that: The buffer mechanism (4) also includes a rubber pad (402), the lower surface of which is fixedly connected to the upper surface of the drainage tube (401).

4. The wear-resistant tubing casing joint for sand-bearing crude oil extraction according to claim 1, characterized in that: The front and rear surfaces of the connector (1) are fixedly connected to the pipe (3), and the inner wall of the pipe (3) is fixedly connected to the lower surface of the drainage tube (401).

5. The wear-resistant tubing casing joint for sand-bearing crude oil extraction according to claim 1, characterized in that: The upper and lower surfaces of the connector (1) are fixedly connected with movable seats (2). The interior of the movable seats (2) is movably connected with an adjusting plate (5) through bearings. The adjusting plate (5) is movably connected to the lower surface of the first clamping ring (702) and the upper surface of the second clamping ring (705) through bearings.

6. The wear-resistant tubing casing joint for sand-bearing crude oil extraction according to claim 5, characterized in that: A spring (6) is fixedly connected to the inner bottom wall of the movable seat (2), and the top of the spring (6) is fixedly connected to the lower surface of the adjusting plate (5).

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