Pipeline righting and guiding device arranged at wellhead

Abstract

The utility model belongs to the technical field of oil well equipment, and particularly relates to a pipeline righting and guiding device arranged at a wellhead. The pipeline righting and guiding device comprises a frame base in butt joint with a wellhead, an upper-layer compression roller set and a lower-layer compression roller set are arranged in the frame base, the axial directions of the two compression roller sets are vertically distributed in the longitudinal direction and the transverse direction, each compression roller set comprises two parallel compression rollers, arc-shaped grooves are formed in the surfaces of the compression rollers, and the end portions of shaft rods at the two ends of the compression rollers are arranged in rails respectively. The distance between the two parallel compression rollers can be adjusted; the pipeline righting and guiding device is used in cooperation with an oil well mouth, and has the advantages that the pipeline enters and is lifted smoothly, abrasion of the pipeline and the well wall of the well mouth is reduced, a composite pipeline structure is protected, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil well equipment, and specifically relates to a pipeline straightening and guiding device arranged at a wellhead. Background Art

[0002] Composite hoses are corrosion-resistant, high-pressure-resistant, wear-resistant, flexible and easy to coil, and are becoming more and more popular in the field of oilfield exploitation. At present, the composite structure of hoses has diversified functions, such as insulation, heat insulation, intelligent signal transmission, etc. The internal pipe layer is becoming more and more complex, and the thickness, length and overall diameter of the pipeline are also increasing. In addition, the existing wellhead diameter is small. When the pipeline is put into the well and pulled out of the well, the pipeline and the wellhead lack guidance and correction, which can easily damage the internal structure of the pipeline. Excessive position deviation may even cause problems such as pipe wall crushing and collapse. Utility Model Content

[0003] The utility model aims to provide a pipeline straightening and guiding device used in conjunction with an oil well head, which has the characteristics of smooth operation of the pipeline entering and leaving the well, reducing the wear of the pipeline and the well head wall, protecting the composite pipeline structure, and extending the service life.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A pipeline straightening and guiding device arranged at a wellhead, characterized in that it includes a frame seat docked with the wellhead, an upper and lower double-layer roller group is arranged in the frame seat, the axes of the two roller groups are vertically distributed vertically and horizontally, each roller group includes two parallel rollers, and the pipeline passes between the two rollers, the surface of the rollers is provided with arc grooves, and the ends of the shaft rods at both ends of the rollers are respectively placed in tracks, so that the distance between the two parallel rollers can be adjusted.

[0006] The additional technical features of the above-mentioned pipeline straightening and guiding device arranged at the wellhead also include:

[0007] - A guide tube is arranged at the bottom of the frame, the guide tube is aligned with the center of the roller group upwards, the guide tube is butted with the wellhead downwards, and a bearing is installed between the guide tube and the wellhead;

[0008] The track is a slide groove arranged on the opposite side plates of the frame, the end of the shaft rod of the pressure roller passes through or is placed in the slide groove, and the shaft rods of the two parallel pressure rollers are connected by a preload spring;

[0009] ——The base is formed by symmetrical assembly, the joint center line is the axial center line of the lower roller group, and the tracks at both ends of the upper roller group are symmetrical open structures, and an open opening is arranged on the outer side of the frame for the roller shaft to enter.

[0010] Compared with the prior art, the utility model provides a pipeline straightening and guiding device arranged at the wellhead, which has the following advantages: the frame of the device is connected with the wellhead of the oil well, and an upper and lower double-layer pressure roller group is arranged in the frame, and the pressure roller group is composed of parallel pressure rollers, and the pipeline passes through between the pressure rollers. Since the pressure roller surface is provided with an arc groove, that is, the arc groove clamps the pipeline on both sides, it has a straightening and guiding effect, so that the pipeline can smoothly enter and exit the wellhead, and the axial directions of the upper and lower double-layer pressure roller groups are perpendicular to each other, that is, the clamping positions of the upper and lower parts of the pipeline are also perpendicular to each other, which prevents the pipeline from being misaligned when entering and exiting the wellhead. shift; in particular, the ends of the shafts at both ends of the rollers are respectively placed in the tracks, so that the distance between the two parallel rollers can be adjusted, that is, the rollers can clamp the pipeline more adaptable to pipeline operation, always have a pre-tightening clamping force, the arc grooves on the surface of the rollers are more closely fitted to the pipe body, reducing mutual wear, corresponding to pipelines with large diameters and thick walls, the stand and the roller group increase the contact height between the pipeline and the wellhead, avoiding the pipeline operation being restricted by the wellhead, causing bending, crushing and other problems, and extending the service life of the composite pipeline. The device has the advantages of simple and compact structure, convenient disassembly and assembly, safety, economy and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a pipeline straightening and guiding device arranged at a wellhead according to the utility model;

[0012] Figure 2 It is a schematic diagram of the top view structure of the pipeline straightening and guiding device;

[0013] Figure 3 It is a side structural schematic diagram of the pipeline straightening and guiding device. DETAILED DESCRIPTION

[0014] The structure and working principle of the novel pipeline straightening and guiding device provided by the utility model are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, unless otherwise specified, the terms "up / down", "inside / outside", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set / provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0017] like Figure 1 , Figure 2 As shown, the structure of the novel pipeline straightening and guiding device includes a frame 1 connected to the wellhead, and an upper and lower double-layer roller group (21, 22) is arranged in the frame 1. The axes of the two roller groups (21, 22) are vertically distributed vertically and horizontally. Each roller group includes two parallel rollers 20, and the pipeline passes between the two rollers. The surface of the roller 20 is provided with an arc groove 201. The ends of the shaft rods 200 at both ends of the roller 20 are respectively placed in the track 3, so that the distance between the two parallel rollers can be adjusted.

[0018] The working principle is as follows: the frame 1 of the device is installed at the wellhead of the oil well, and the upper and lower double-layer roller groups (21, 22) in the frame 1 correspond to the center of the wellhead, that is, the two parallel rollers 20 of the roller group are clamped by the two sides of the pipeline, and the upper and lower clamping positions are perpendicular to each other, so that the pipeline is in the straightening and guiding position when passing through the roller group (21, 22) until entering and exiting the wellhead. At the same time, the surface of the roller 20 is an arc groove 201, which can better fit the pipe body and reduce mutual wear. When the pipeline enters and exits the wellhead, a certain degree of bending is allowed without causing damage to the structure inside the pipe.

[0019] In the structure constituting the above-mentioned novel pipeline straightening and guiding device,

[0020] - In order to facilitate the docking and installation of the straightening guide device with the wellhead, a guide tube 4 is arranged at the bottom of the frame 1, and the guide tube 4 is aligned with the center of the roller group (21, 22) upwards, and the guide tube 4 is docked with the wellhead downwards. Preferably, a bearing 41 is installed between the guide tube 4 and the wellhead, so that the entire straightening guide device and the wellhead can rotate relative to each other, and the axial position of the roller group can be adaptively adjusted according to the specific inlet and outlet direction of the pipeline, so that its arc groove 201 is completely fitted to the pipe body;

[0021] ——Furthermore, the track 3 is a slide groove arranged on the opposite side plates of the frame 1, and the end of the shaft rod 200 of the pressure roller passes through or is placed in the slide groove. The shaft rods 200 of the two parallel pressure rollers are connected by a preload spring 202. The pressure roller 20 moves in the slide groove through the shaft rods 200 at both ends to achieve a change in relative spacing, thereby adapting to different pipe diameters, ensuring that the pipe is fully clamped, and playing a role in straightening and guiding;

[0022] ——As a preferred embodiment, the base is symmetrically assembled, and the splicing center line is the axial center line a of the lower roller group, that is, the middle line of the two parallel roller axes. The split assembly method is adopted, which is convenient for the pipeline end equipment, such as flanges, sealers, etc., to enter the roller group (21, 22), and then assemble the base to cover the outside of the pipeline. The tracks 3 at both ends of the upper roller group 21 are symmetrical open structures, such as Figure 3 As shown, an open opening 31 for the roller shaft 200 to enter is provided on the outer side of the frame 1, that is, both ends of the shaft 200 of the upper roller group 21 are horizontally pushed into the slide track 3 through the open opening 31, and assembly and disassembly are very convenient. The shaft 200 and the preload spring 202 are connected by a pull ring structure, that is, hooks are provided at both ends of the preload spring 202, which are connected to the hanging holes or hanging rings provided on the shaft.

[0023] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A pipeline straightening and guiding device arranged at a wellhead, characterized in that: It includes a frame seat connected to the wellhead, in which an upper and lower double-layer roller group is arranged, and the axes of the two roller groups are vertically distributed vertically and horizontally. Each roller group includes two parallel rollers, and a pipeline passes through the two rollers. The surface of the roller is provided with an arc groove, and the ends of the shaft rods at both ends of the roller are respectively placed in the track, so that the distance between the two parallel rollers can be adjusted.

2. A pipeline straightening and guiding device arranged at a wellhead according to claim 1, characterized in that: A guide tube is arranged at the bottom of the frame, the guide tube is aligned with the center of the roller group upwards, the guide tube is butted with the wellhead downwards, and a bearing is installed between the guide tube and the wellhead.

3. A pipeline straightening and guiding device arranged at a wellhead according to claim 1 or 2, characterized in that: The track is a slide groove arranged on the opposite side plates of the frame, the end of the shaft rod of the pressure roller passes through or is placed in the slide groove, and the shaft rods of the two parallel pressure rollers are connected by a preload spring.

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