Drill bit loading and unloading bearing table for petroleum drilling

Abstract

The utility model relates to the technical field of petroleum drilling platforms, in particular to a drill bit loading and unloading bearing table for petroleum drilling. The drill bit loading and unloading bearing table for petroleum drilling comprises a bearing unit, a rotating unit and a lifting unit, the bearing unit is used for bearing a drill bit, and the rotating unit can make the bearing unit rotate around the axis of the rotating unit; the lifting unit can drive the bearing unit on the rotating unit to do lifting motion so that a drill bit on the bearing unit can be in butt joint with a drill column on the oil drilling platform. Therefore, an operator only needs to lift a drill bit to the bearing unit, and when the drill bit is screwed on and connected, the hoisted drill column is lowered until the lower end of the drill column is in butt joint with the drill bit on the bearing unit, and the operator does not need to continuously keep the state of lifting the drill bit; therefore, threaded connection of the drill bit and the drill column can be achieved, time and labor are saved, the drill bit falling safety risk is reduced, and installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling platform technology, and in particular to a drill bit loading and unloading support platform for oil drilling. Background Technology

[0002] On an oil drilling platform, the drill string is always in a vertical position. When installing the drill bit at the lower end of the suspended drill string, it usually takes 2-3 people to lift the drill bit and rotate it so that the male thread of the drill bit enters the female thread at the lower end of the drill string, so that the male thread of the drill bit is connected with the female thread at the lower end of the drill string which is in a vertically suspended state.

[0003] However, due to the large weight of oil drilling drill bits, it is difficult for personnel to lift the drill bit and make the connection. There is also the risk that the drill bit may fall due to unstable lifting, which could damage the drill bit and cause injury. In addition, manual operation results in low installation efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a drill bit loading and unloading support platform for oil drilling, which solves the technical problems of drill bit damage and injury risks and low installation efficiency in the existing oil drilling drill bit installation process.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model provides a drill bit loading and unloading support platform for oil drilling, including a support unit, a rotating unit, and a lifting unit; the support unit is used to support the drill bit; the fixed end of the rotating unit is connected to the top of the lifting unit, and the rotating end of the rotating unit is connected to the support unit so that the support unit rotates along its axis; the lifting unit can drive the support unit on the rotating unit to move up and down so that the drill bit on the support unit can dock with the drill string on the oil drilling platform.

[0009] Preferably, the rotating unit includes a fixed column and a bearing; the bottom end of the fixed column is connected to the top end of the lifting unit, and the supporting unit is connected to the fixed column through the bearing.

[0010] Preferably, the support unit includes a support plate and a guardrail; the guardrail is disposed on the circumference of the support plate, and the bottom end of the support plate is connected to the fixed column through a bearing.

[0011] Preferably, the lifting unit includes an inner cylinder, an outer cylinder, and a spring. The outer cylinder is sleeved outside the inner cylinder, and the two are internally connected. The inner cylinder and the outer cylinder can slide relative to each other in the vertical direction. The top end of the spring is connected to the inner top wall of the inner cylinder, the bottom end of the spring is connected to the inner bottom wall of the outer cylinder, and the bottom end of the fixing column is connected to the top end of the inner cylinder.

[0012] Preferably, a first retaining ring is formed at the bottom outer edge of the inner cylinder; a second retaining ring is formed at the top inner edge of the outer cylinder, and the first retaining ring and the second retaining ring are engaged.

[0013] Preferably, the inner top wall of the inner cylinder is provided with an upper positioning post, and the top end of the spring is sleeved on the upper positioning post; the lower bottom wall of the outer cylinder is provided with a lower positioning post, and the bottom end of the spring is sleeved on the lower positioning post.

[0014] Preferably, the bottom end of the outer cylinder extends radially outward to form a fixing plate.

[0015] Preferably, the lifting unit further includes a handle; the handle is disposed on the outer cylinder.

[0016] Preferably, the support unit further includes an anti-slip pad; the anti-slip pad is disposed on the top of the support plate.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this utility model are:

[0019] This utility model discloses a drill bit loading and unloading support platform for oil drilling, comprising a support unit, a rotating unit, and a lifting unit. The support unit supports the drill bit. The fixed end of the rotating unit is connected to the top of the lifting unit, and the rotating end of the rotating unit is connected to the support unit. The rotating unit enables the support unit to rotate along its axis. The lifting unit drives the support unit on the rotating unit to move up and down, allowing the drill bit on the support unit to align with the drill string on the oil drilling platform. Therefore, operators only need to lift the drill bit onto the support unit. During the top-down connection, the hoisted drill string is lowered until its lower end aligns with the drill bit on the support unit. Operators do not need to continuously hold the drill bit. Because the support unit is rotatable and the lifting unit can drive the support unit to move up and down, the threaded connection between the drill bit and the drill string can be achieved, saving time and effort, reducing the safety risk of the drill bit falling, and improving installation efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the drill bit loading and unloading support platform for oil drilling according to the present invention.

[0021] Figure 2 for Figure 1 A schematic diagram of the longitudinal section;

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0023] [Explanation of Labels in the Attached Image]

[0024] 1: Support unit; 11: Support plate; 12: Guardrail; 2: Rotating unit; 21: Fixed column; 22: Bearing; 3: Lifting unit; 31: Inner cylinder; 311: First retaining ring; 312: Upper positioning column; 32: Outer cylinder; 321: Second retaining ring; 322: Lower positioning column; 33: Spring; 4: Handle. Detailed Implementation

[0025] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, this utility model embodiment provides a drill bit loading and unloading support platform for oil drilling. The drill bit loading and unloading support platform includes a support unit 1, a rotating unit 2, and a lifting unit 3. The support unit 1 is used to support the drill bit. The fixed end of the rotating unit 2 is connected to the top of the lifting unit 3, and the rotating end of the rotating unit 2 is connected to the support unit 1. The rotating unit 2 enables the support unit 1 to rotate along its axis, thereby causing the drill bit on it to rotate. The lifting unit 3 can drive the support unit 1 on the rotating unit 2 to move up and down so that the drill bit on the support unit 1 can dock with the drill string on the oil drilling platform.

[0027] Therefore, the operator only needs to lift the drill bit onto the support unit 1. During the top connection, the hoisted drill string is lowered until the lower end of the drill string aligns with the drill bit on the support unit 1. There is no need for personnel to continuously hold the drill bit. Since the support unit 1 can rotate along its own axis and the lifting unit 3 can drive the support unit 1 to rise and fall, the threaded connection between the drill bit and the drill string can be achieved. This saves time and effort, reduces the safety risk of the drill bit falling, and improves installation efficiency. At the same time, this drill bit loading and unloading support platform has a simple structure and low production cost.

[0028] It should be noted that in practical applications, the drill string and the drill bit are connected by threads, so the connection between the two can be achieved by screwing the drill bit.

[0029] like Figure 2 As shown, the rotating unit 2 includes a fixed column 21 and a bearing 22. The bottom end of the fixed column 21 is connected to the top end of the lifting unit 3, and the supporting unit 1 is connected to the fixed column 21 through the bearing 22.

[0030] like Figure 1 and Figure 2As shown, the support unit 1 includes a support plate 11 and a guardrail 12. The guardrail 12 is fixedly installed on the circumference of the support plate 11, and the bottom end of the support plate 11 is connected to the fixed column 21 via a bearing 22. In use, the drill bit is placed on the support plate 11. The guardrail 12 prevents the drill bit from falling off and facilitates manual pushing of the support plate 11; the support plate 11 can be rotated simply by manually turning the guardrail 12. It should be noted that the actual structure of the drill bit's bottom end allows it to be placed stably on the support plate 11. To prevent the drill bit from slipping, the support unit 1 also includes an anti-slip pad, which is installed on the top of the support plate 11.

[0031] like Figure 2 As shown, the lifting unit 3 includes an inner cylinder 31, an outer cylinder 32, and a spring 33. The outer cylinder 32 is sleeved outside the inner cylinder 31, and the two are internally connected. The inner cylinder 31 and the outer cylinder 32 can slide relative to each other in the vertical direction. The top end of the spring 33 is connected to the inner top wall of the inner cylinder 31, and the bottom end of the spring 33 is connected to the inner bottom wall of the outer cylinder 32. The bottom end of the fixing column 21 is connected to the top end of the inner cylinder 31. When the drill bit is placed on the support plate 11, the spring 33 in the lifting unit 3 is compressed. After the hoisted drill string is lowered and docked with the top of the drill bit, the support plate 11 is rotated. During the rotation, the drill string and the drill bit are continuously connected, and the pressure borne by the spring 33 gradually decreases. The spring 33 returns to its original position, causing the inner cylinder 31 to slide upward relative to the outer cylinder 32, so that the drill bit on the support plate 11 continues to abut against the drill string. When the drill string and the drill bit are connected, the hoisted drill string drives the drill bit to be lifted and reset together. It should be noted that both the inner cylinder 31 and the outer cylinder 32 are cylindrical structures with one-sided sealing.

[0032] like Figure 3 As shown, in order to prevent the inner cylinder 31 from separating from the outer cylinder 32 during the upward process, a first retaining ring 311 is formed on the outer edge of the bottom end of the inner cylinder 31, and a second retaining ring 321 is formed on the inner edge of the top end of the outer cylinder 32. The first retaining ring 311 and the second retaining ring 321 are engaged.

[0033] To facilitate the installation of the spring 33, the inner top wall of the inner cylinder 31 is provided with an upper positioning post 312, and the top end of the spring 33 is sleeved on the upper positioning post 312. The lower bottom wall of the outer cylinder 32 is provided with a lower positioning post 322, and the bottom end of the spring 33 is sleeved on the lower positioning post 322. To make the drill bit loading and unloading support platform more stable when placed on the ground, the bottom end of the outer cylinder 32 extends radially outward to form a fixing plate. At the same time, to facilitate the movement of the device support lifting unit 3, a handle 4 is also included, which is set on the outer cylinder 32.

[0034] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bit changer for oil drilling, characterized in that, The device comprises a supporting unit (1), a rotating unit (2) and a lifting unit (3); The supporting unit (1) is used for supporting a drill bit; The fixed end of the rotating unit (2) is connected with the top end of the lifting unit (3), and the rotating end of the rotating unit (2) is connected with the supporting unit (1) so that the supporting unit (1) rotates along its axis; The lifting unit (3) can drive the supporting unit (1) on the rotating unit (2) to move up and down so that the drill bit on the supporting unit (1) is connected with a drill string on an oil drilling platform.

2. The drill bit loading and unloading supporting platform for oil drilling according to claim 1, wherein: The rotating unit (2) comprises a fixed column (21) and a bearing (22); The bottom end of the fixed column (21) is connected with the top end of the lifting unit (3), and the supporting unit (1) is connected with the fixed column (21) through the bearing (22).

3. The drill bit loading and unloading supporting platform for oil drilling according to claim 2, wherein: The supporting unit (1) comprises a supporting plate (11) and a guardrail (12); The guardrail (12) is arranged on the periphery of the supporting plate (11), and the bottom end of the supporting plate (11) is connected with the fixed column (21) through the bearing (22).

4. The drill bit loading and unloading supporting platform for oil drilling according to claim 3, wherein: The lifting unit (3) comprises an inner cylinder (31), an outer cylinder (32) and a spring (33), and the outer cylinder (32) is sleeved outside the inner cylinder (31) and the interiors of the two are communicated; The inner cylinder (31) and the outer cylinder (32) can slide relative to each other in the vertical direction, the top end of the spring (33) is connected with the inner top wall of the inner cylinder (31), the bottom end of the spring (33) is connected with the inner bottom wall of the outer cylinder (32), and the bottom end of the fixed column (21) is connected with the top end of the inner cylinder (31).

5. The drill bit loading and unloading supporting platform for oil drilling according to claim 4, wherein: The bottom end of the inner cylinder (31) forms a first clamping ring (311) on the outer edge; The top end of the outer cylinder (32) forms a second clamping ring (321) on the inner edge, and the first clamping ring (311) and the second clamping ring (321) are clamped.

6. The drill bit loading and unloading supporting platform for oil drilling according to claim 4, wherein: The inner top wall of the inner cylinder (31) is provided with an upper positioning column (312), and the top end of the spring (33) is sleeved on the upper positioning column (312); The lower bottom wall of the outer cylinder (32) is provided with a lower positioning column (322), and the bottom end of the spring (33) is sleeved on the lower positioning column (322).

7. The drill bit loading and unloading supporting platform for oil drilling according to claim 4, wherein: The bottom end of the outer cylinder (32) extends radially outward to form a fixed plate.

8. The bit changer for oil drilling as claimed in claim 4, wherein: The lifting unit (3) further comprises a handle (4); The handle (4) is arranged on the outer cylinder (32).

9. The drill bit loading and unloading supporting platform for oil drilling according to claim 3, wherein: The supporting unit (1) further comprises a non-slip mat; The non-slip mat is arranged on the top of the supporting plate (11).

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