Integrated rock debris cleaner

Abstract

The integrated rock debris cleaner comprises a first connector, a middle connector and a second connector which are fixedly connected with one another, and the first connector and the second connector are located on the two sides of the middle connector respectively. Working wing plates are fixedly connected to the outer side of the middle connector and evenly arranged on the outer side of the middle connector in the circumferential direction at intervals. Each working wing plate is of a V-shaped structure, and a V-shaped working flow channel is formed between every two adjacent working wing plates; the outer side of the working wing plate is further connected with a plurality of wear-resisting heads. In the using process, rock debris is smashed through the V-shaped structure of the working wing plate and the inclined cutting edge, and rock debris cleaning is facilitated. Meanwhile, the working flow channel of the V-shaped structure generates double-acting stirring during rotation, turbulent flow is formed to stir the rock debris, and the debris bed is damaged and removed. And the wear-resistant head on the outer side of the working wing plate plays roles in protecting the working wing plate and reducing direct contact, so that the service life of the cleaner is prolonged, and the working stability of the cleaner is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil drilling, in particular to an integrated rock cuttings cleaner. Background Art

[0002] During the drilling process, the cuttings bed is formed by the accumulation of debris generated by the drill bit rotating and cutting in the rock formation. The formation of the cuttings bed mainly includes the following reasons: 1. The drill bit rotates to cut the rock formation: While the drill bit rotates, it applies pressure to cut, causing the rock formation to produce debris. 2. The role of drilling fluid: During the drilling process, drilling fluid is usually used to flush the bottom of the well to flush the cuttings out of the bottom of the well. However, due to changes in pressure and flow rate, the drilling fluid may not be able to completely bring out the cuttings, resulting in the accumulation of cuttings at the bottom of the well. 3. Bottom of the well conditions: Near the bottom of the well, due to conditions such as high pressure and slow flow rate, cuttings are easily accumulated at the bottom of the well to form a cuttings bed.

[0003] The formation of a cuttings bed will affect the drilling efficiency and the operation of the drill bit. Therefore, the cuttings bed needs to be cleaned in time during drilling to keep the drilling operation going normally. In the prior art, workers use a cuttings remover to stir the drilling fluid and discharge the cuttings therein from the cuttings removal channel. However, the structure of the existing cuttings remover usually uses a scraper to scrape the debris. When the cuttings remover of this structure is used, the scraper is subjected to a large force and is easily stuck by the cuttings. It also wears out quickly, and the scraper needs to be replaced frequently. There are problems such as poor cleaning effect and instability.

[0004] The patent with publication number CN210622740U discloses an intelligent rock cuttings cleaning device, which is provided with a diversion assembly, and uses gravity and drilling fluid pressure to make the scraper move to the bottom of the sleeve before it can be extended. This method can reduce the contact between the scraper and the top rock cuttings, thereby protecting the scraper. However, when the scraper is extended and contacts the rock cuttings, it is still subject to a large force and is easy to be damaged. Utility Model Content

[0005] The purpose of the utility model is to provide an integrated rock debris cleaner to solve the following technical problems raised in the background technology:

[0006] The structure of the existing rock chip remover usually uses a scraper to scrape the debris. When the rock chip remover with this structure is in use, the scraper is subjected to greater force, is easily stuck by rock chips, and wears quickly. The scraper needs to be replaced frequently, and there are problems such as poor cleaning effect and instability.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] An integrated rock debris cleaner comprises a first joint, an intermediate joint and a second joint which are fixed to each other, wherein the first joint and the second joint are respectively located on both sides of the intermediate joint;

[0009] A working wing plate is fixedly connected to the outer side of the middle joint, and the working wing plates are evenly spaced in the circumferential direction of the outer side of the middle joint;

[0010] The working wing plate is of V-shaped structure, and a V-shaped working flow channel is formed between adjacent working wing plates; and a plurality of wear-resistant heads are connected to the outer sides of the working wing plates.

[0011] Furthermore, the first joint is provided with an internal thread, and the second joint is provided with an external thread.

[0012] Furthermore, the bending angle of the V-shaped working wing plate is 150 degrees to 160 degrees.

[0013] Furthermore, an alloy hard coating layer made of wear-resistant alloy material is arranged on the top of the wear-resistant head.

[0014] Furthermore, an inner cylinder is arranged in the middle joint, bearings are fixedly connected in the first joint and the second joint, and both ends of the inner cylinder are rotatably connected to the bearings; a turbine is fixedly connected in the inner cylinder, and a pressure transmission port is arranged on one side of the inner cylinder;

[0015] An installation cavity is provided in the middle joint at a position corresponding to the working wing plate, and a pressure plate is movably connected in the installation cavity; a plurality of installation holes are provided on the working wing plate, one side of the bottom of the wear-resistant head is movably connected in the installation hole, and the bottom of the wear-resistant head passes through the installation hole and is fixedly connected to the pressure plate.

[0016] Furthermore, a limiting ring is arranged between the middle joint and the inner tube, the limiting ring is located on both sides of the installation cavity and the middle joint and extends toward one side of the installation cavity.

[0017] Furthermore, a sealing ring is provided between the limiting ring and the inner cylinder.

[0018] Furthermore, a guide structure is provided in the installation cavity between the working wing plate and the pressure plate, and the guide structure includes a telescopic rod and a compression spring; one end of the telescopic rod is connected to the working wing plate, and the other end is connected to the pressure plate; the compression spring is located on the outside of the telescopic rod, one end of the compression spring is connected to the working wing plate, and the other end is connected to the pressure plate.

[0019] Furthermore, the telescopic rod comprises an outer tube and an inner rod, one side of the inner rod is movably connected in the outer tube, the inner rod is connected to the pressure plate, and the outer tube is connected to the working wing plate.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] When the utility model is in use, the rock chips are broken by the V-shaped structure of the working wing plate and the inclined cutting edge, which is conducive to cleaning the rock chips. At the same time, the working flow channel of the V-shaped structure generates a double-action stirring when rotating, forming a turbulent flow to stir the rock chips, thereby destroying and removing the chip bed, and ensuring the cleaning effect. The wear-resistant head on the outer side of the working wing plate plays a role in protecting the working wing plate and reducing direct contact, thereby improving the service life and working stability of the cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of part A.

[0025] Markings in the figure: 1-first joint, 2-wear-resistant head, 3-second joint, 4-working flow channel, 5-working wing plate, 6-middle joint, 7-limiting ring, 8-installation cavity, 9-guide structure, 10-pressure transmission port, 11-inner cylinder, 12-pressure plate, 13-turbine, 14-bearing, 16-sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] Example:

[0028] An integrated rock debris cleaner, hereinafter referred to as a cleaner, comprises a first joint 1, an intermediate joint 6 and a second joint 3 fixed to each other, wherein the first joint 1 and the second joint 3 are respectively located on both sides of the intermediate joint 6;

[0029] The working wing plates 5 are fixedly connected to the outer side of the middle joint 6, and the working wing plates 5 are evenly spaced in the circumferential direction of the outer side of the middle joint 6;

[0030] The working wing plates 5 are of a V-shaped structure, and a V-shaped working flow channel 4 is formed between adjacent working wing plates 5 ; and a plurality of wear-resistant heads 2 are connected to the outer sides of the working wing plates 5 .

[0031] Specifically, the first joint 1 and the second joint 3 are used to connect the rotating rod. The cleaner is connected between the rotating rods through the first joint 1 and the second joint 3. During operation, the working wing plate 5 outside the middle joint 6 contacts the rock chips. The working wing plate 5 of the V-shaped structure has an inclined cutting edge, so that the rock chips can be broken, which is conducive to cleaning the rock chips. The working flow channel 4 of the V-shaped structure will produce a double-acting stirring when rotating, thereby forming a turbulent flow to stir the rock chips, thereby destroying and removing the chip bed. As for the wear-resistant head 2 on the outside of the working wing plate 5, it is to protect the working wing plate 5 while stirring and breaking the rock chips, and reduce the direct contact between the working wing plate 5 and the rock chips. This design can increase the service life of the cleaner, and also improve the working stability of the cleaner. In the entire cleaner, the first joint 1, the middle joint 6 and the second joint 3 are integrally formed, and the overall strength is relatively high.

[0032] In a preferred embodiment, an internal thread is provided on the first joint 1, and an external thread is provided on the second joint 3. The design of the internal thread and the external thread can facilitate the stable connection between the first joint 1 and the second joint 3 and the rotating rod, ensuring that the various components of the cuttings cleaner remain stable during operation.

[0033] In a preferred embodiment, the bending angle of the V-shaped working wing plate 5 is 150 to 160 degrees. This design can ensure that the rock debris is fully crushed and removed when passing through the cleaner, thereby improving the efficiency of rock debris cleaning.

[0034] In a preferred embodiment, the top of the wear-resistant head 2 is provided with an alloy hard coating made of a wear-resistant alloy material. The top of the wear-resistant head 2 is provided with an alloy hard coating made of a wear-resistant alloy material, such as tungsten carbide alloy, cobalt carbide alloy and other wear-resistant alloy materials, which have excellent wear resistance and corrosion resistance, can effectively protect the working wing plate 5 of the cleaner, and extend the service life of the cleaner.

[0035] In a preferred embodiment, an inner cylinder 11 is provided in the middle joint 6, bearings 14 are fixedly connected in the first joint 1 and the second joint 3, and both ends of the inner cylinder 11 are rotatably connected to the bearings 14; a turbine 13 is fixedly connected in the inner cylinder 11, and a pressure transmission port 10 is provided on one side of the inner cylinder 11;

[0036] An installation cavity 8 is provided in the middle joint 6 at a position corresponding to the working wing plate 5, and a pressure plate 12 is movably connected in the installation cavity 8; a plurality of installation holes are provided on the working wing plate 5, and one side of the bottom of the wear-resistant head 2 is movably connected in the installation hole and the bottom of the wear-resistant head 2 passes through the installation hole and is fixedly connected to the pressure plate 12.

[0037] In actual use, since the intermediate joint 6 protrudes outward relative to the first joint 1 and the second joint 3, the intermediate joint 6 will contact with the rock cuttings more and stir the rock cuttings to clean the cuttings bed. However, when there are many rock cuttings, the cleaner is prone to get stuck. In order to solve this problem, the above-mentioned solution is proposed. During the drilling process, the drilling fluid flows through the inner cylinder 11 and drives the turbine 13 to rotate. The turbine 13 drives the inner cylinder 11 to rotate. When the inner cylinder 11 rotates, the pressure transmission port 10 on the inner cylinder 11 will periodically communicate with different installation cavities 8. When the pressure transmission port 10 is connected to the installation cavity 8, the pressure of the drilling fluid will push the pressure plate 12 to move outward, and then push the wear-resistant head 2 to move outward through the pressure plate 12. As a result, the wear-resistant head 2 on the outside of the intermediate joint 6 will periodically extend outward. In this way, it is beneficial for the wear-resistant head 2 to contact with the rock cuttings and break and stir the rock cuttings. In general, through the connection between the pressure transmission port 10 and the installation cavity 8 and the periodic movement of the pressure plate 12 and the wear-resistant head 2, the wear-resistant head 2 can be periodically extended outward, effectively avoiding the cleaner from getting stuck and improving the cleaning efficiency and stability.

[0038] In a preferred embodiment, a limit ring 7 is provided between the intermediate joint 6 and the inner tube 11, and the limit ring 7 is located on both sides of the installation cavity 8 and the intermediate joint 6, and the limit ring 7 extends toward one side of the installation cavity 8. The limit ring 7 is used to limit the pressure plate 12 to prevent the pressure plate 12 from excessive movement or loss of control during operation. The limit ring 7 is located on both sides of the installation cavity 8 and the intermediate joint 6, and extends toward one side of the installation cavity 8 to ensure that the pressure plate 12 is accurately limited when the pressure transmission port 10 is connected to the installation cavity 8, thereby ensuring that the wear-resistant head 2 can be stably and effectively extended outward, improving the cleaning efficiency and avoiding the occurrence of the cleaner getting stuck.

[0039] In a preferred embodiment, a sealing ring 16 is provided between the stop ring 7 and the inner cylinder 11. The function of the sealing ring 16 is to ensure that the connection between the stop ring 7 and the inner cylinder 11 is sealed reliably, to prevent liquid or solid particles from penetrating into the connection, and to maintain the stability and reliability of the overall structure. The sealing ring 16 can effectively prevent the intrusion of impurities, extend the service life of the equipment, and ensure the normal operation and cleaning effect of the integrated rock chip cleaner.

[0040] In a preferred embodiment, a guide structure 9 is provided between the working wing plate 5 and the pressure plate 12 in the installation cavity 8, and the guide structure 9 includes a telescopic rod and a compression spring; one end of the telescopic rod is connected to the working wing plate 5, and the other end is connected to the pressure plate 12; the compression spring is located on the outside of the telescopic rod, one end of the compression spring is connected to the working wing plate 5, and the other end is connected to the pressure plate 12. The guide structure 9 is to facilitate the resetting of the pressure plate 12. The design of the telescopic rod and the compression spring in the guide structure 9 can effectively ensure that the pressure plate 12 is stable and controlled during the movement between the working wing plate 5 and the installation cavity 8, prevent excessive or insufficient movement, and ensure the normal operation and cleaning effect of the chip cleaner. The telescopic rod can easily and quickly reset the pressure plate 12 through the telescopic action of the spring, maintain the stability and reliability of the cleaner, improve the cleaning efficiency and extend the service life of the equipment. Optimally, the telescopic rod includes an outer tube and an inner rod, one side of the inner rod is movably connected in the outer tube, the inner rod is connected to the pressure plate 12, and the outer tube is connected to the working wing plate 5.

[0041] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships 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, and 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 should not be understood as a limitation on the present invention.

[0042] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated rock debris cleaner, characterized in that: It comprises a first joint (1), an intermediate joint (6) and a second joint (3) which are fixedly connected to each other, wherein the first joint (1) and the second joint (3) are respectively located on both sides of the intermediate joint (6); The working wing plates (5) are fixedly connected to the outer side of the middle joint (6), and the working wing plates (5) are evenly spaced in the circumferential direction of the outer side of the middle joint (6); The working wing plate (5) is of a V-shaped structure, and a V-shaped working flow channel (4) is formed between adjacent working wing plates (5); and a plurality of wear-resistant heads (2) are also connected to the outer sides of the working wing plates (5).

2. The integrated rock debris cleaner according to claim 1, characterized in that: The first joint (1) is provided with an internal thread, and the second joint (3) is provided with an external thread.

3. The integrated rock debris cleaner according to claim 1, characterized in that: The bending angle of the V-shaped working wing plate (5) is 150 degrees to 160 degrees.

4. The integrated rock debris cleaner according to claim 1, characterized in that: The top of the wear-resistant head (2) is provided with an alloy hard decoration layer made of wear-resistant alloy material.

5. The integrated rock debris cleaner according to claim 1, characterized in that: An inner cylinder (11) is arranged in the middle joint (6); bearings (14) are fixedly connected in the first joint (1) and the second joint (3); both ends of the inner cylinder (11) are rotatably connected to the bearings (14); a turbine (13) is fixedly connected in the inner cylinder (11); and a pressure transmission port (10) is arranged on one side of the inner cylinder (11); A mounting cavity (8) is provided in the middle joint (6) at a position corresponding to the working wing plate (5), and a pressure plate (12) is movably connected in the mounting cavity (8); a plurality of mounting holes are provided on the working wing plate (5), one side of the bottom of the wear-resistant head (2) is movably connected in the mounting hole, and the bottom of the wear-resistant head (2) passes through the mounting hole and is fixedly connected to the pressure plate (12).

6. The integrated rock debris cleaner according to claim 5, characterized in that: A limiting ring (7) is provided between the middle joint (6) and the inner tube (11), the limiting ring (7) being located on both sides of the installation cavity (8) and the middle joint (6), and the limiting ring (7) extending toward one side of the installation cavity (8).

7. The integrated rock debris cleaner according to claim 6, characterized in that: A sealing ring (16) is provided between the limiting ring (7) and the inner cylinder (11).

8. The integrated rock debris cleaner according to claim 5, characterized in that: A guide structure (9) is provided in the installation cavity (8) between the working wing plate (5) and the pressure plate (12), and the guide structure (9) comprises a telescopic rod and a compression spring; one end of the telescopic rod is connected to the working wing plate (5), and the other end is connected to the pressure plate (12); the compression spring is located on the outside of the telescopic rod, one end of the compression spring is connected to the working wing plate (5), and the other end is connected to the pressure plate (12).

9. The integrated rock debris cleaner according to claim 8, characterized in that: The telescopic rod comprises an outer tube and an inner rod, one side of the inner rod is movably connected in the outer tube, the inner rod is connected to the pressure plate (12), and the outer tube is connected to the working wing plate (5).

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