Hydraulic spring centralizing device

Abstract

The utility model discloses a hydraulic spring centralizing device, which relates to the technical field of centralizing appliances and comprises a hydraulic pipe, a liquid injection port is arranged on the top surface of the hydraulic pipe, a hydraulic cylinder is mounted in the hydraulic pipe, a connecting rod is arranged in the hydraulic cylinder, and a centralizing component is arranged on the outer side of the connecting rod. According to the utility model, through the cooperation of the first spring and the second spring, the spring piece can be conveniently controlled to be converted into a bent state and a vertical state, so that the spring piece cannot be clamped in a pipeline during subsequent pipe entering, and the working efficiency is improved; through cooperation of a connecting rod and a connector, a first spring and a second spring can be extruded conveniently, and the follow-up righting effect is improved; through the cooperation of the circular connecting cylinder and the conical connecting cylinder, the pipe entering resistance can be conveniently reduced, and the follow-up righting efficiency is improved; and through the cooperation of the hydraulic pipe and the hydraulic cylinder with the first spring and the second spring, different well conditions can be better adapted, the centering degree of the sleeve is improved, the abrasion of a spring piece is reduced, and the service life of the sleeve is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of straightening devices, and in particular to a hydraulic spring straightening device. Background Technology

[0002] With the deepening of oil and gas resource exploration and development, drilling technology has continued to advance, resulting in a large number of wells with complex trajectories such as directional wells, horizontal wells, and extended reach wells. In these complex wells, the casing is subject to friction and resistance from the well wall during the running-in process, which can easily lead to casing deviation and wear, affecting the running-in and cementing quality. Centralizers can provide centralizing force during the running-in process, reducing friction and resistance between the casing and the well wall, enabling the casing to be smoothly run into the predetermined position and remain centered in the well.

[0003] Most existing centralizers are rigid, consisting of a rigid central tube and multiple arc-shaped spring plates radially distributed around the central tube. However, their elasticity is limited, and the centralizing effect will be affected when the wellbore size varies greatly or the well wall is irregular. Moreover, since the spring plates are in direct contact with the well wall, they are prone to wear on the hard well wall, resulting in a shortened service life. Therefore, improvements are needed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hydraulic spring straightening device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic spring straightening device, including a hydraulic pipe, an injection port on the top surface of the hydraulic pipe, and a hydraulic cylinder installed inside the hydraulic pipe. A connecting rod is provided inside the hydraulic cylinder, and a piston is fixedly connected to the top surface of the connecting rod. The piston abuts against the inner wall of the hydraulic cylinder. The lower end of the connecting rod is placed outside the hydraulic cylinder and the hydraulic pipe, and a straightening component is provided outside the connecting rod.

[0006] Preferably, the straightening component includes a connector at the lower end of the connecting rod, the connector being threadedly connected to the lower end of the connecting rod, and a second spring being provided at the upper end of the connector, the second spring being sleeved on the connecting rod.

[0007] Preferably, the upper end of the connecting rod is provided with a circular connecting cylinder, and a first movable ring is fixedly connected to the upper end of the circular connecting cylinder, the first movable ring abutting against the hydraulic pipe.

[0008] Preferably, the lower end of the circular connecting cylinder is provided with a conical connecting cylinder, the conical connecting cylinder is sleeved on the connecting rod, and the lower end of the conical connecting cylinder is fixedly connected to a second moving ring, the second moving ring being fixedly connected to the upper end of the second spring.

[0009] Preferably, a first spring is provided between the circular connecting cylinder and the conical connecting cylinder. The first spring is sleeved on the connecting rod, and both ends of the first spring are respectively connected to the circular connecting cylinder and the conical connecting cylinder.

[0010] Preferably, a plurality of equidistant spring plates are movably hinged to the outer side of the first moving ring, and the other end of the spring plates is movably hinged to the outer side of the second moving ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation of the first spring and the second spring facilitates the control of the spring plate to switch between a bent state and a vertical state, preventing it from getting stuck in the pipe during subsequent pipe insertion and improving its working efficiency; the cooperation of the connecting rod and the connector facilitates the compression of the first spring and the second spring, improving the subsequent straightening effect; the cooperation of the circular connecting cylinder and the conical connecting cylinder facilitates the reduction of resistance during pipe insertion, improving the subsequent straightening efficiency; and the cooperation of the hydraulic pipe and hydraulic cylinder with the first spring and the second spring better adapts to different well conditions, improves the casing centering, reduces the wear of its spring plate, and increases its service life. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the connection between the hydraulic pipe and the hydraulic cylinder proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the overall cross-sectional three-dimensional structure proposed in this utility model;

[0016] Figure 4 The present utility model proposes Figure 3 Enlarged schematic diagram of the structure at part A in the middle.

[0017] The numbers in the diagram are: 1. First moving ring; 2. Second moving ring; 3. Spring plate; 4. Circular connecting cylinder; 5. Conical connecting cylinder; 6. First spring; 7. Hydraulic pipe; 8. Hydraulic cylinder; 9. Connecting rod; 10. Second spring; 11. Connector; 12. Piston. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4 The hydraulic spring straightening device of this utility model includes a hydraulic pipe 7, with an injection port on the top surface of the hydraulic pipe 7, and a hydraulic cylinder 8 installed inside the hydraulic pipe 7. A connecting rod 9 is provided inside the hydraulic cylinder 8, and a piston 12 is fixedly connected to the top surface of the connecting rod 9, abutting against the inner wall of the hydraulic cylinder 8. The lower end of the connecting rod 9 is located outside the hydraulic cylinder 8 and the hydraulic pipe 7, and a straightening component is provided on the outside of the connecting rod 9. Liquid can be easily injected through the hydraulic pipe 7; the displacement distance of the connecting rod 9 can be easily controlled through the hydraulic cylinder 8; the movement of the connecting rod 9 can be easily facilitated through the piston 12; the straightening component includes... A connector 11 is located at the lower end of the connecting rod 9. The connector 11 is threaded to the lower end of the connecting rod 9, and a second spring 10 is provided at the upper end of the connector 11. The second spring 10 is sleeved on the connecting rod 9. The connector 11 facilitates the compression of the second spring 10. The connecting rod 9 facilitates the control of the movement of the connector 11. A circular connecting cylinder 4 is provided at the upper end of the connecting rod 9. A first moving ring 1 is fixedly connected to the upper end of the circular connecting cylinder 4. The first moving ring 1 abuts against the hydraulic pipe 7. The circular connecting cylinder 4 facilitates the connection of the first moving ring 1. The first moving ring 1 facilitates the installation of the spring plate 3.

[0020] In this utility model, a conical connecting cylinder 5 is provided at the lower end of the circular connecting cylinder 4. The conical connecting cylinder 5 is sleeved on the connecting rod 9, and a second moving ring 2 is fixedly connected to the lower end of the conical connecting cylinder 5. The second moving ring 2 is fixedly connected to the upper end of the second spring 10. The conical connecting cylinder 5 facilitates the connection of the second moving ring 2. The second moving ring 2 facilitates the compression of the spring sheet 3. A first spring 6 is provided between the circular connecting cylinder 4 and the conical connecting cylinder 5. The first spring 6 is sleeved on the connecting rod 9, and both ends of the first spring 6 are respectively connected to the circular connecting cylinder 4 and the conical connecting cylinder 5. The first spring 6 facilitates the reset of the conical connecting cylinder 5. Multiple equidistant spring sheets 3 are movably hinged to the outside of the first moving ring 1. The other end of the spring sheet 3 is movably hinged to the outside of the second moving ring 2. The spring sheet 3 facilitates abutment in the pipe, thereby completing the subsequent straightening.

[0021] Working principle: When using this utility model, firstly, the device is placed into the pipe that needs to be straightened, then liquid is injected into the hydraulic pipe 7. The liquid is then guided into the hydraulic cylinder 8 through the internal circuit of the hydraulic pipe 7. The piston 12 then abuts against the inner wall of the hydraulic cylinder 8, thereby controlling the connecting rod 9 to move upward. The connecting head 11 is connected to the connecting rod 9, thereby controlling the connecting head 11 to move upward, which in turn squeezes the second spring 10. When the second spring 10 is squeezed to its maximum extent, it pushes the upper second moving ring 2 and the conical connecting cylinder 5. At this time, the first spring 6 is in a compressed state. When the second moving ring 2 moves upward, the distance between the first moving ring 1 and the second moving ring 2 shortens, thereby clamping the spring plate 3 into a bent shape, so that the spring plate 3 abuts against the inner wall of the pipe that needs to be straightened. After the device is straightened, a portion of the liquid inside the hydraulic pipe 7 is extracted. The first spring 6 and the second spring 10 are used to reset all control components, and then the device is removed from the pipe.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Hydraulic spring centralizer device, comprising a hydraulic tube (7), characterized in that: The top surface of the hydraulic pipe (7) is provided with an injection port, and a hydraulic cylinder (8) is installed inside the hydraulic pipe (7). A connecting rod (9) is provided inside the hydraulic cylinder (8), and a piston (12) is fixedly connected to the top surface of the connecting rod (9). The piston (12) abuts against the inner wall of the hydraulic cylinder (8). The lower end of the connecting rod (9) is placed outside the hydraulic cylinder (8) and the hydraulic pipe (7), and a straightening component is provided outside the connecting rod (9).

2. The hydraulic spring centralizer of claim 1, wherein: The straightening assembly includes a connector (11) located at the lower end of the connecting rod (9). The connector (11) is threaded to the lower end of the connecting rod (9), and a second spring (10) is provided at the upper end of the connector (11). The second spring (10) is sleeved on the connecting rod (9).

3. The hydraulic spring centralizer of claim 1, wherein: The upper end of the connecting rod (9) is provided with a circular connecting cylinder (4), and the upper end of the circular connecting cylinder (4) is fixedly connected with a first moving ring (1), which abuts against the hydraulic pipe (7).

4. The hydraulic spring centralizer of claim 3, wherein: The lower end of the circular connecting cylinder (4) is provided with a conical connecting cylinder (5), which is sleeved on the connecting rod (9). The lower end of the conical connecting cylinder (5) is fixedly connected with a second moving ring (2), which is fixedly connected to the upper end of the second spring (10).

5. The hydraulic spring centralizer of claim 3, wherein: A first spring (6) is provided between the circular connecting cylinder (4) and the conical connecting cylinder (5). The first spring (6) is sleeved on the connecting rod (9), and the two ends of the first spring (6) are respectively connected to the circular connecting cylinder (4) and the conical connecting cylinder (5).

6. The hydraulic spring centralizer of claim 3, wherein: The first moving ring (1) has multiple equidistant spring plates (3) hinged to its outer side, and the other end of the spring plates (3) is hinged to the outer side of the second moving ring (2).

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