Ocean drilling guide deviation prevention centralizer

Abstract

The utility model discloses an ocean drilling direction deviation prevention centralizer, including frame body, the frame body one end and the other end all are equipped with hydraulic cylinder, two groups the movable end of hydraulic cylinder all are connected with the plate body, two groups the plate body one end all rotatory link have multiple groups of roller body, two groups the plate body one end all rotatory link have brush roller. The utility model discloses brush roller bristle is flexible and has good cleaning power, and when contacting with the drilling pipe column, can sweep and brush the seawater residue, silt and other sundries, avoids silt abrasion roller body, high salt medium corrosion drilling pipe column, and is the double protection for core component. It adopts roller body, synchronous pulley, synchronous belt linkage drive, and when the drilling pipe column moves, drives the roller body rotation by friction force, and then transmits power to the brush roller and makes it synchronous rotation, adapts the drilling pipe column moving speed, has no cleaning dead angle, and improves the cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling equipment, and in particular to a marine drilling guide anti-deviation stabilizer. Background Technology

[0002] Marine drilling is a drilling project carried out in oceans, bays and other sea areas. Its core purpose is geological exploration and resource development. According to the nature of the work, it can be divided into three categories: nearshore shallow drilling, offshore oil drilling and open ocean drilling. It is a key technical means for mankind to explore the mysteries of the deep earth and obtain marine resources. It requires drilling equipment adapted to the marine environment, which must not only support the drilling equipment, but also provide a stable working site and resist natural interference such as wind, waves and ocean currents.

[0003] The existing announcement number is CN222025752U, which discloses a drilling string straightening device, relating to the field of drilling string straightening technology. It mainly includes a straightening guide device and an adjustment mechanism. The straightening guide device includes a first guide member and a second guide member, which are arranged opposite to each other and respectively positioned on both sides of the drilling string to straighten and guide it. The first guide member and / or the second guide member are connected to an adjustment mechanism, which moves the first guide member and / or the second guide member closer to or further away to adjust the distance between them. This invention's adjustment mechanism can adjust the distance between the first and second guide members, allowing the drilling string straightening device to adapt to drilling strings of different diameters, ensuring the drilling string position does not easily shift, and facilitating operation.

[0004] While the aforementioned issues can be addressed by adjusting the distance between the first and second guide members, allowing the drilling string straightening device of this invention to adapt to drilling strings of different diameters, in marine drilling operations, the drilling string is constantly immersed in and reciprocates in the seawater environment. Its surface is prone to accumulating various marine-specific impurities, such as abrasive particles (e.g., suspended silt, metal fragments), corrosive crystals (e.g., salt crystals left after seawater evaporation), and biological attachments (e.g., barnacles, shellfish, and their secretions). Hard particles in these attachments, such as silt and shellfish, can form abrasives between the drilling string and components like the straightening rollers and guide blocks, potentially causing wear on the straightening rollers and other guide components, and even directly scratching and thinning the drilling string itself. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a marine drilling guide anti-deviation stabilizer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A marine drilling guide anti-deviation stabilizer includes a frame, with hydraulic cylinders installed at one and the other ends of the frame. The movable ends of the two sets of hydraulic cylinders are connected to plates. Multiple sets of rollers are rotatably connected to one end of each of the two sets of plates. Brush rollers are rotatably connected to one end of each of the two sets of plates. A synchronous pulley is connected to one end of some of the rollers and the two sets of brush rollers. Each pair of synchronous pulleys is driven by a synchronous belt. An opening is provided at one end of the frame.

[0007] Preferably, each of the two sets of plates has a sliding groove at one end and the other end, and each of the frame is connected to two sets of slide rails at one end and the other end, with the multiple sets of sliding grooves slidably connected to the corresponding slide rails.

[0008] Preferably, all of the rollers are hourglass-shaped.

[0009] Preferably, all of the slide rails are dovetail-shaped and fit into the slide groove.

[0010] Preferably, the frame is provided with scales at one end and the other end, and the two sets of scales are respectively placed corresponding to the corresponding plates.

[0011] Preferably, the frame has mounting holes at all four ends.

[0012] Preferably, the brush portion of both sets of brush rollers is made of nylon.

[0013] The beneficial effects of this utility model are as follows: 1. Through the coordinated design of the brush roller, synchronous pulley, and synchronous belt, the brush roller bristles possess relatively good flexibility and cleaning power. When in contact with the drilling string surface, the brush bristles can, to a certain extent, peel off and remove seawater residue, silt, and rock debris adhering to the drilling string surface through their sweeping action. This avoids physical wear of the roller body by hard silt particles and reduces chemical corrosion of the drilling string by high-salt media, providing double protection for the core component. Simultaneously, the brush roller's drive mechanism employs a linkage design of the roller body, synchronous pulley, and synchronous belt. When the drilling string moves axially during operation, the friction between it and the roller body causes the roller body to rotate naturally. The synchronous pulley at one end of the roller body rotates accordingly, and the power is transmitted to the corresponding synchronous pulley of the brush roller via the synchronous belt, thereby driving the brush roller to rotate synchronously. This leveraging design ensures that the rotation speed of the brush roller is always matched with the movement speed of the drilling string, which avoids cleaning dead spots caused by asynchronous power, improves cleaning efficiency to a certain extent, and further avoids wear and tear on the drilling string and other components. 2. Through the coordinated operation of the hydraulic cylinders, plates, and rollers, operators can drive the hydraulic cylinders to extend and retract according to the actual diameter of the drilling string being used. When adapting to a large-diameter drilling string, the hydraulic cylinders drive the two sets of plates to move outwards synchronously, widening the distance between the rollers on both sides. When switching to a small-diameter drilling string, the hydraulic cylinders pull the plates inwards, narrowing the distance between the rollers. This adjustment method improves the equipment's versatility for different drilling scenarios to a certain extent, avoiding work interruptions caused by equipment incompatibility. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a marine drilling guide anti-deviation stabilizer proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the central slide groove, slide rail, and scale; Figure 3 for Figure 1 Schematic diagram of the structure of the middle plate and the roller; Figure 4 for Figure 1 Schematic diagram of the structure of the intermediate brush roller, timing pulley, and timing belt; Figure 5 for Figure 1 Schematic diagram of the structure of the frame, hydraulic cylinder and plate.

[0015] In the diagram: 1. Frame; 2. Hydraulic cylinder; 3. Plate; 4. Roller; 5. Brush roller; 6. Synchronous pulley; 7. Synchronous belt; 8. Inlet; 9. Slide groove; 10. Slide rail; 11. Scale; 12. Mounting hole. Detailed Implementation

[0016] 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.

[0017] Example 1, referring to Figures 1 to 5A marine drilling guide and anti-deviation stabilizer includes a frame 1, with hydraulic cylinders 2 installed at one and the other ends of the frame 1. The model of the hydraulic cylinders 2 can be selected according to the actual situation. The movable ends of the two sets of hydraulic cylinders 2 are connected to plates 3. One end of each set of plates 3 is rotatably connected to multiple sets of rollers 4. The rollers 4 are used to guide and stabilize the drilling string. One end of each set of plates 3 is rotatably connected to brush rollers 5. The brush rollers 5 clean debris and seawater adhering to the drilling string to a certain extent, preventing seawater and debris from damaging the rollers 4. Part of the rollers 4 and the two sets of brush rollers 5 are also connected to the rollers 4. Each brush roller 5 is connected to a synchronous pulley 6 at one end. The roller body 4 drives the brush roller 5 to rotate through the cooperation of the synchronous pulley 6 and the synchronous belt 7. Every two sets of synchronous pulleys 6 are connected by the synchronous belt 7. One end of the frame body 1 is provided with an opening 8 for the drilling string to pass through. Although the brush roller 5 can contact the drilling string, the drilling string may not be able to drive the brush roller 5 to rotate. At this time, the friction between the roller body 4 and the drilling string will cause it to rotate, and then drive the brush roller 5 to rotate through the synchronous pulley 6 and the synchronous belt 7, which has a better cleaning effect to a certain extent.

[0018] In this embodiment, each of the two sets of plates 3 has a sliding groove 9 at one end and the other end, and each of the two sets of slide rails 10 is connected to one end and the other end of the frame 1. The multiple sets of sliding grooves 9 are slidably connected to the corresponding slide rails 10, providing guidance for the movement of the plates 3. Activating the hydraulic cylinder 2 can drive the plates 3 to move, and the movement of the plates 3 will drive the rollers 4 to move, thereby allowing the rollers 4 to contact drilling strings of different sizes, thus having a wide range of applicability to a certain extent. The multiple sets of rollers 4 are all hourglass-shaped, with a concave middle and widened ends, which can adapt to drilling strings of different sizes to a certain extent. The multiple sets of slide rails 10 are all dovetail-shaped and fit into the sliding grooves 9, increasing friction and making it less prone to movement due to vibration, while also providing vertical restriction. Each of the two ends of the frame 1 has a scale 11, and the two sets of scales 11 are respectively placed corresponding to the plates 3 to assist the user in adjusting the position of the plates 3. Each of the four ends of the frame 1 has a mounting hole 12, through which the device can be fixed to the corresponding equipment, such as an offshore drilling platform. The brush parts of both sets of brush rollers 5 are made of nylon, which has excellent wear resistance, long service life, good elasticity, and resistance to seawater corrosion.

[0019] The working principle of this embodiment is as follows: During use, the operator adjusts the distance between the two sets of plates 3 by controlling the extension and retraction of the hydraulic cylinder 2 according to the actual diameter of the drilling string. When the hydraulic cylinder 2 retracts, it pushes the plates 3 outward along the slide rail 10, increasing the distance between the rollers 4 to accommodate larger diameter strings; when the hydraulic cylinder 2 extends, it pulls the plates 3 inward, reducing the distance between the rollers 4 to accommodate smaller diameter strings. This adjustment process is controlled by the scale 11 on the frame 1, ensuring that the rollers 4 always maintain good contact with the drilling string, achieving effective alignment and guidance, and improving the adaptability of the equipment to different operating scenarios. When the drilling string moves axially during operation, the friction between its surface and the rollers 4 causes the rollers 4 to rotate naturally. The synchronous pulley 6 at one end of the roller 4 rotates accordingly, transmitting power to the synchronous pulley 6 of the brush roller 5 through the synchronous belt 7, thereby driving the brush roller 5 to rotate synchronously. The brush roller 5 is made of nylon, with flexible and corrosion-resistant bristles. During rotation, it continuously brushes the surface of the drilling string, peeling off and removing seawater residue, mud, rock debris and other impurities to a certain extent, preventing hard particles from abrading the roller body 4 and high-salt media from corroding the string.

[0020] 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. A marine drilling guide and anti-deviation stabilizer, comprising a frame (1), characterized in that, Hydraulic cylinders (2) are installed at one end and the other end of the frame (1). The movable ends of the two sets of hydraulic cylinders (2) are connected to plates (3). Multiple sets of rollers (4) are rotatably connected to one end of the two sets of plates (3). Brush rollers (5) are rotatably connected to one end of the two sets of plates (3). A synchronous pulley (6) is connected to one end of some of the rollers (4) and the two sets of brush rollers (5). Each pair of synchronous pulleys (6) is driven by a synchronous belt (7). An opening (8) is opened at one end of the frame (1).

2. The marine drilling guide and anti-deviation stabilizer according to claim 1, characterized in that, Both of the two sets of plate bodies (3) have sliding grooves (9) at one end and the other end, and both of the frame body (1) are connected to two sets of slide rails (10). The multiple sets of sliding grooves (9) are slidably connected to the corresponding slide rails (10).

3. The marine drilling guide and anti-deviation stabilizer according to claim 1, characterized in that, All of the rollers (4) are hourglass-shaped.

4. A marine drilling guide and anti-deviation stabilizer according to claim 2, characterized in that, All of the slide rails (10) are dovetail-shaped and fit into the slide groove (9).

5. A marine drilling guide and anti-deviation stabilizer according to claim 1, characterized in that, The frame (1) has scales (11) at one end and the other end, and the two sets of scales (11) are respectively placed corresponding to the corresponding plates (3).

6. A marine drilling guide and anti-deviation stabilizer according to claim 1, characterized in that, The frame (1) has mounting holes (12) at all four ends.

7. A marine drilling guide and anti-deviation stabilizer according to claim 1, characterized in that, The brush parts of both sets of brush rollers (5) are made of nylon.

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