Centralizer for preventing oil pipe from swinging

Abstract

The utility model discloses a centralizer capable of preventing an oil pipe from swinging, which belongs to the technical field of centralizers and comprises a first semicircular cylinder and a second semicircular cylinder, convex round inserting strips are fixed at two ends of the first semicircular cylinder, and inserting grooves are arranged at two ends of the second semicircular cylinder. One end of the second semicircular cylinder is provided with a pressing and fixing assembly for stopping and limiting the convex circular insertion strip inserted into the insertion groove; according to the utility model, the convex circular insertion strip on the first semicircular cylinder is inserted into the insertion groove in the second semicircular cylinder, and the convex circular insertion strip inserted into the insertion groove is pressed and limited through the arranged pressing and fixing assembly, so that the convex circular insertion strip is prevented from being separated from the insertion groove, and convenient and rapid assembly of the first semicircular cylinder and the second semicircular cylinder is completed; the first semicircular cylinder and the second semicircular cylinder are assembled and disassembled more conveniently, the assembling stability of the first semicircular cylinder and the second semicircular cylinder is effectively improved, the assembling and disassembling efficiency of the centralizer on an oil pipe is improved, and the assembling structure is simple and practical.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the righting device technical field, concretely relates to a righting device for preventing oil pipe swing. BACKGROUND

[0002] The righting device is a key device used in oil drilling, well repairing or well completion operations, mainly used for stabilizing the oil pipe to prevent it from swinging in the wellbore or colliding with the well wall. During drilling or well repairing, the oil pipe may swing due to irregular wellbore, drilling fluid flow or external vibration, which not only causes friction and wear of the oil pipe with the well wall, but also affects the operation efficiency and safety. The righting device can effectively reduce the swing of the oil pipe and ensure the oil pipe to keep the central position in the wellbore through its unique structural design. The righting device is usually made of high-strength metal or composite material, with wear-resistant and corrosion-resistant properties, which can adapt to the complex downhole environment. The surface of the righting device is usually coated with a wear-resistant coating to prolong the service life. By using the righting device, not only the friction between the oil pipe and the well wall can be reduced, but also the service life of the oil pipe can be prolonged, and the efficiency and safety of drilling or well repairing operations can be improved.

[0003] The installation method of the righting device in the prior art is usually connected with the righted part through fixing structure such as set screw and screw connection. With such installation method, the installation position of the righting device is difficult to be flexibly selected, and when the righting device is assembled and disassembled, multiple screws and other connecting parts need to be repeatedly assembled and disassembled, which leads to complex structure of the righting device and cumbersome and inconvenient assembly and disassembly operation of the righting device, affecting the assembly and disassembly efficiency of the righting device.

[0004] Therefore, there is a need for a righting device for preventing oil pipe swing to solve the problems raised in the background. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a righting device for preventing oil pipe swing to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a righting device for preventing oil pipe swing, comprising a first half cylinder and a second half cylinder, the two ends of the first half cylinder are fixed with convex round insertion strips, the convex round insertion strips are arranged along the length direction of the first half cylinder, the two ends of the second half cylinder are provided with insertion slots, one end of the insertion slot is provided with an opening and the convex round insertion strip is matched with the insertion slot, one end of the second half cylinder is provided with a pressing and fixing assembly for stopping and positioning the convex round insertion strip inserted into the insertion slot, the pressing and fixing assembly is provided with two groups and the two groups of pressing and fixing assemblies are symmetrically distributed.

[0007] It needs to be explained in the scheme that the pressing and fixing assembly comprises an L-shaped supporting plate connected to the end of the second half cylinder, a nut sleeve fixed in the L-shaped supporting plate, and a threaded rod threadedly connected in the nut sleeve, and a pressing plate fixed on one end of the threaded rod for pressing and limiting the convex circular insertion strip inserted into the insertion slot.

[0008] Further, the threaded rod is fixed with a rotating head plate on the end away from the pressing plate, and a plurality of convex ribs are arranged in a ring shape on the side surface of the rotating head plate.

[0009] Further, the side surface of the pressing plate away from the threaded rod is fixed with a first rubber pad, and the area of the first rubber pad is equal to the area of the side surface of the threaded rod.

[0010] As a preferred embodiment, the end side surface of the second half cylinder is fixed with a convex column, and the one end of the L-shaped supporting plate is fixed with a convex plate rotatably connected with the convex column.

[0011] As a preferred embodiment, the inner side walls of the first half cylinder and the second half cylinder are fixed with a second rubber pad, and a plurality of second rubber pads are arranged at equal distances.

[0012] As a preferred embodiment, the outer side walls of the first half cylinder and the second half cylinder are fixed with a righting arm, and a plurality of righting arms are arranged in a ring shape.

[0013] Compared with the prior art, the righting device for preventing the oil pipe from swinging has at least the following beneficial effects:

[0014] The inner wall of the second half cylinder is first attached to the outer side wall of the oil pipe, and then the convex circular insertion strip on the first half cylinder is inserted into the insertion slot on the second half cylinder, so that the first half cylinder and the second half cylinder are assembled into a complete whole and are sleeved on the outer side wall of the oil pipe, the convex circular insertion strip inserted into the insertion slot is pressed and limited by the pressing and fixing assembly, so that the convex circular insertion strip is prevented from coming out of the insertion slot, the first half cylinder and the second half cylinder are conveniently and quickly assembled, the first half cylinder and the second half cylinder are more convenient to assemble and disassemble, the stability of the assembly of the first half cylinder and the second half cylinder is effectively improved, the efficiency of the assembly and disassembly of the righting device on the oil pipe is improved, and the assembly structure is simple and practical. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The overall structure of the utility model is shown in the figure;

[0016] Figure 2 is Figure 1 the enlarged structure of part A in the figure;

[0017] Figure 3 It is the whole front view structure schematic diagram of the utility model;

[0018] Figure 4 It is the convex circle insertion strip local structure schematic diagram of the utility model;

[0019] Figure 5 It is the insertion slot local structure schematic diagram of the utility model;

[0020] Figure 6 It is the compression solid assembly local structure schematic diagram of the utility model.

[0021] In the drawing: 1, compression solid assembly;101, L-shaped support plate;102, threaded rod;103, pressing plate;104, first rubber pad;105, nut sleeve;106, screw head plate;107, convex rib;108, convex plate;109, convex column;2, first half cylinder;3, second half cylinder;4, centralizing arm;5, second rubber pad;6, convex circle insertion strip;7, insertion slot. DETAILED DESCRIPTION

[0022] The utility model is further described below in combination with examples.

[0023] Please refer to Figures 1-6 The utility model provides a prevent oil pipe swing's centralizer, including first half cylinder 2 and second half cylinder 3, both ends of first half cylinder 2 are fixed with convex circle insertion strip 6, and convex circle insertion strip 6 is arranged along the length direction of first half cylinder 2, and both ends of second half cylinder 3 are all set with insertion slot 7, and one end of insertion slot 7 is set up in open mode and convex circle insertion strip 6 is inserted and matched with insertion slot 7, and one end of second half cylinder 3 is provided with compression solid assembly 1 that stops and positions convex circle insertion strip 6 inserted in insertion slot 7, and compression solid assembly 1 is provided with two groups and two groups of compression solid assembly 1 are symmetrically distributed;When installing the centralizer to the oil pipe outer lateral wall, by first adhering the inner wall of second half cylinder 3 to the outer lateral wall of oil pipe, then aligning convex circle insertion strip 6 on first half cylinder 2 and insertion slot 7 on second half cylinder 3, and inserting convex circle insertion strip 6 on first half cylinder 2 into insertion slot 7 on second half cylinder 3, first half cylinder 2 and second half cylinder 3 are assembled to an integral whole and are sleeved on the outer lateral wall of oil pipe, and the compression solid assembly 1 is set to compress and position convex circle insertion strip 6 inserted into insertion slot 7, thereby avoiding the disengagement of convex circle insertion strip 6 from insertion slot 7, achieving the convenient and rapid assembly of first half cylinder 2 and second half cylinder 3, making the assembly and disassembly of first half cylinder 2 and second half cylinder 3 more convenient, effectively improving the stability of the assembly of first half cylinder 2 and second half cylinder 3, improving the assembly and disassembly efficiency of the centralizer on the oil pipe, and the assembly structure is relatively simple and practical, and the structure is novel.

[0024] Further as Figure 1 , Figure 2 andFigure 3 As shown, it is worth noting that the pressing solid assembly 1 comprises an L-shaped support plate 101 connected to the end of the second half cylinder 3, and a nut sleeve 105 is fixed in the L-shaped support plate 101, and a threaded rod 102 is threadedly connected in the nut sleeve 105, and one end of the threaded rod 102 is fixed with a pressing plate 103 for pressing and limiting the convex circular insertion strip 6 inserted in the insertion slot 7; when the centralizer is installed on the outer wall of the oil pipe, the inner wall of the second half cylinder 3 is first attached to the outer wall of the oil pipe, then the convex circular insertion strip 6 on the first half cylinder 2 is aligned with the insertion slot 7 on the second half cylinder 3, and the convex circular insertion strip 6 on the first half cylinder 2 is inserted into the insertion slot 7 on the second half cylinder 3, at this time the end face of the convex circular insertion strip 6 is flush with the end face of the second half cylinder 3, so that the first half cylinder 2 and the second half cylinder 3 are assembled into a complete whole and are sleeved on the outer wall of the oil pipe, and by rotating the threaded rod 102, the threaded rod 102 drives the pressing plate 103 to move towards the opening of the insertion slot 7, so that the pressing plate 103 presses the end face of the convex circular insertion strip 6, thereby the convex circular insertion strip 6 inserted into the insertion slot 7 is pressed and limited by the pressing plate 103, thereby avoiding the convex circular insertion strip 6 from being pulled out of the insertion slot 7, and the convenient and rapid assembly of the first half cylinder 2 and the second half cylinder 3 is completed, so that the first half cylinder 2 and the second half cylinder 3 are more convenient to assemble and disassemble, the stability of the assembly of the first half cylinder 2 and the second half cylinder 3 is effectively improved, the efficiency of assembling and disassembling the centralizer on the oil pipe is improved, and the assembly structure is simple and practical.

[0025] Further as shown in Figure 2 , it is worth noting that the end of the threaded rod 102 away from the pressing plate 103 is fixed with a rotating head plate 106, and a plurality of annularly distributed ribs 107 are arranged on the side surface of the rotating head plate 106; in specific work, the rotating head plate 106 is arranged to facilitate the rotation and adjustment of the threaded rod 102, which is convenient to operate.

[0026] Further as shown in Figure 2 and Figure 6 , it is worth noting that the side surface of the pressing plate 103 away from the threaded rod 102 is fixed with a first rubber pad 104, and the area of the first rubber pad 104 is equal to the area of the side surface of the threaded rod 102; in specific work, the first rubber pad 104 is arranged to increase the friction between the pressing plate 103 and the convex circular insertion strip 6, and improve the stability of the pressing plate 103 pressing the convex circular insertion strip 6, thereby further improving the assembly stability of the first half cylinder 2 and the second half cylinder 3.

[0027] Further as shown in Figure 6As shown, it is worth noting that the end side of the second half cylinder 3 is fixed with a convex column 109, and one end of the L-shaped support plate 101 is fixed with a convex plate 108 rotatably connected with the convex column 109; when assembling the first half cylinder 2 and the second half cylinder 3, the L-shaped support plate 101 is adjusted to rotate away from the opening end of the insertion slot 7, so that the convex circular insertion strip 6 can be smoothly inserted into the insertion slot 7, and after the convex circular insertion strip 6 is inserted into the insertion slot 7, the L-shaped support plate 101 is adjusted to rotate to the convex circular insertion strip 6, and when the pressing plate 103 presses and positions the convex circular insertion strip 6, the L-shaped support plate 101 is synchronously positioned and fixed.

[0028] The working process of the scheme is as follows: when the centralizer is installed on the outer side wall of the oil pipe, the L-shaped support plate 101 is first adjusted to rotate away from the opening end of the insertion slot 7, so that the convex circular insertion strip 6 can be smoothly inserted into the insertion slot 7, the inner wall of the second half cylinder 3 is first attached to the outer side wall of the oil pipe, then the convex circular insertion strip 6 on the first half cylinder 2 and the insertion slot 7 on the second half cylinder 3 are aligned, and the convex circular insertion strip 6 on the first half cylinder 2 is inserted into the insertion slot 7 on the second half cylinder 3, at this time, the end face of the convex circular insertion strip 6 is flush with the end face of the second half cylinder 3, so that the first half cylinder 2 and the second half cylinder 3 are assembled into a complete whole and are sleeved on the outer side wall of the oil pipe, the L-shaped support plate 101 is adjusted to rotate to the convex circular insertion strip 6, the threaded rod 102 is rotated, the threaded rod 102 drives the pressing plate 103 to move towards the opening of the insertion slot 7, and the pressing plate 103 presses the end face of the convex circular insertion strip 6, so that the convex circular insertion strip 6 inserted into the insertion slot 7 is pressed and positioned by the pressing plate 103, and the first half cylinder 2 and the second half cylinder 3 are quickly spliced and assembled on the oil pipe.

[0029] Further as shown in Figure 1 , Figure 4 and Figure 5 , it is worth noting that the inner side walls of the first half cylinder 2 and the second half cylinder 3 are both attached with the second rubber pad 5, and the second rubber pad 5 is provided with a plurality of second rubber pads 5 which are equidistantly distributed; when the first half cylinder 2 and the second half cylinder 3 are installed on the outer side wall of the oil pipe, the second rubber pad 5 is compressed to produce elastic deformation, the second rubber pad 5 increases the contact friction between the first half cylinder 2, the second half cylinder 3 and the outer side wall of the oil pipe, and improves the stability of the whole composed of the first half cylinder 2 and the second half cylinder 3 installed on the oil pipe.

[0030] Further as shown in Figure 1 , Figure 3 and Figure 6As shown, it is worth noting that the outer side wall of the first half cylinder 2 and the second half cylinder 3 is fixed with a centralizer arm 4, and the centralizer arm 4 is provided with a plurality of centralizer arms 4 which are annularly distributed.

[0031] In summary: by inserting the convex plug strip 6 on the first half cylinder 2 into the slot 7 on the second half cylinder 3, the first half cylinder 2 and the second half cylinder 3 are assembled into a complete whole and are sleeved on the outer side wall of the oil pipe. The convex plug strip 6 inserted into the slot 7 is pressed and limited by the setting compression assembly 1, thereby avoiding the convex plug strip 6 from coming out of the slot 7. The convenient and rapid assembly of the first half cylinder 2 and the second half cylinder 3 is completed, the first half cylinder 2 and the second half cylinder 3 are more convenient to disassemble, the stability of the assembly of the first half cylinder 2 and the second half cylinder 3 is effectively improved, the disassembly efficiency of the centralizer on the oil pipe is improved, and the assembly structure is relatively simple and practical.

Claims

1. A stabilizer for preventing oil pipe swaying, comprising a first semi-cylinder (2) and a second semi-cylinder (3), characterized in that, A convex circular insert (6) is fixed at both ends of the first semi-cylinder (2). The convex circular insert (6) is arranged along the length direction of the first semi-cylinder (2). A slot (7) is provided at both ends of the second semi-cylinder (3). One end of the slot (7) is open and the convex circular insert (6) is properly inserted into the slot (7). A pressure-fixing component (1) is provided at one end of the second semi-cylinder (3) to stop and limit the convex circular insert (6) inserted into the slot (7). Two sets of pressure-fixing components (1) are provided and the two sets of pressure-fixing components (1) are symmetrically distributed.

2. A centralizer for preventing oil pipe swaying according to claim 1, characterized in that, The clamping assembly (1) includes an L-shaped support plate (101) connected to the end of the second semi-cylinder (3). A nut sleeve (105) is fixed inside the L-shaped support plate (101). A threaded rod (102) is threadedly connected inside the nut sleeve (105). A pressure plate (103) is fixed at one end of the threaded rod (102) to clamp and limit the convex round insert (6) inserted into the slot (7).

3. A stabilizer for preventing oil pipe swaying according to claim 2, characterized in that, A rotating head plate (106) is fixed to one end of the threaded rod (102) away from the pressure plate (103), and a plurality of convex ribs (107) arranged in a ring are provided on the side of the rotating head plate (106).

4. A stabilizer for preventing oil pipe swaying according to claim 2, characterized in that, A first rubber pad (104) is attached and fixed to the side of the pressure plate (103) away from the threaded rod (102), and the area of ​​the first rubber pad (104) is equal to the side area of ​​the threaded rod (102).

5. A centralizer for preventing oil pipe swaying according to claim 4, characterized in that, A protruding post (109) is fixed on the end side of the second semi-cylinder (3), and a protruding plate (108) that is rotatably connected to the protruding post (109) is fixed on one end of the L-shaped support plate (101).

6. A centralizer for preventing oil pipe swaying according to claim 1, characterized in that, The inner walls of the first semi-cylinder (2) and the second semi-cylinder (3) are both fitted with and fixed with second rubber pads (5). Multiple second rubber pads (5) are provided and the multiple second rubber pads (5) are distributed at equal intervals.

7. A stabilizer for preventing oil pipe swaying according to claim 6, characterized in that, A straightening arm (4) is fixed on the outer side wall of the first semi-cylinder (2) and the second semi-cylinder (3). The straightening arm (4) is provided in multiple ways and the multiple straightening arms (4) are arranged in a ring.

Images